Compositions for enhancing nitrogen fertilizers by incorporating Anti-oxidant moieties and methods for use thereof

Abstract

This invention relates to urease inhibitor compositions comprising tributylhydroquinone and, if applicable, additive components for enhancing the inhibitory properties of tributylhydroquinone. The use of such compositions in agriculture for improving nutrient absorption and inhibiting urease activity is also described.

Description

Compositions for enhancing nitrogen fertilizers by incorporating antioxidant components and their application methods The subject matter disclosed in this invention relates to compositions containing tributylhydroquinone. Further description is given of the use of these compositions in agriculture for improving nutrient absorption and inhibiting urease activity. Nitrogen is an essential plant nutrient, considered crucial for vigorous and robust foliage. Urea provides a high nitrogen content and is the primary nitrogen fertilizer. In the presence of soil moisture, natural or synthetic urea is converted into ammonium ions, which are then available for plant uptake. Ammonium can be further converted into nitrates by soil bacteria through nitrification. Nitrates are also available for plant uptake. However, plants utilize urea inefficiently. Although millions of tons of urea-containing fertilizers are used globally each year and are the primary fertilizer used, approximately 30% of the applied fertilizer never reaches the intended target area (roots). In practice, nitrogen fertilizers are often applied only once at the beginning of the growing season. Typically, nitrogen fertilizers are formulated as dry granules, pellets, or a fluid made from urea alone or mixed with ammonium nitrate to form UAN (a mixture of urea, ammonium nitrate, and water). Urea is also found in animal manure. These forms of urea have a significant drawback: they undergo rapid decomposition upon application to the soil, producing ammonia. This is due to the presence of urease in the soil, which reacts with urea to produce ammonium bicarbonate and ammonia. This series of processes is referred to as volatilization in this technique. Volatilization leads to reduced nitrogen fertilizer efficiency, decreased yield, nitrogen deficiency symptoms in plants, unpleasant odors, and potentially harmful ammonia concentrations. Furthermore, the ammonia produced can be converted into nitrates by soil bacteria, a process called nitrification. Excess nitrates can be converted into nitric oxide or nitrous oxide by certain types of bacteria in the soil, a process called denitrification. Urease inhibitors have been developed to delay the degradation of nitrogen fertilizers, thereby reducing the loss of nitrogenous degradation products that would occur in the absence of such inhibitors. The combined use of urease inhibitors and nitrogen fertilizers often increases the time that nitrogen sources remain in the soil and are available for plant uptake, thus increasing fertilizer effectiveness and positively impacting crop yield and quality. However, issues related to cost, safety, convenience, and stability limit the use of these types of inhibitors. Currently, the Agrotain® product line contains the urease inhibitor N-(n-butyl)thiophosphate triamine (NBPT) and is commonly used to improve nitrogen fertilizer availability and minimize ammonia volatilization. However, products such as Agrotain® also exhibit various drawbacks, including their chemical stability and potential interference with nitrogen uptake and assimilation in target crops (Zanin L, Tomasi N, Zamboni A, Varanini Z and Pinton R (2015) The Urease Inhibitor NBPT Negatively Affects DUR3-mediated Uptake and Assimilation of Urea in Maize Roots. Front. Plant Sci. 6:1007; Zanan L, Venuti S, Tomasi N, Zamboni A, De Brito Francisco RM, Varanini Z and Pinton R (2016) Short-Term Treatment with the Urease Inhibitor N-(n-Butyl) Thiophosphoric Triamide (NBPT) Alters Urea Assimilation and Modulates Transcriptional Profiles of Genes Involved in Primary and Secondary Metabolism in Maize Seedlings. Front. Plant Therefore, there is a great need to discover urease inhibitors that are stable and safe for the environment and animals and non-toxic to crops. Therefore, despite ongoing research efforts to improve existing products, there remains a significant need to develop better urease inhibition methods and compositions containing urease inhibitors that provide good stability while effectively controlling enzyme-induced urea decomposition. Within one scope, the subject matter described herein relates to a method for inhibiting urease activity, comprising applying a urease inhibitor composition to the soil, wherein the urease inhibitor composition contains tert-butylhydroquinone and an organic solvent. In one category, the subject matter described herein relates to a method for fertilizing soil and / or improving plant growth and / or health, comprising contacting a urease inhibitor composition with the soil, wherein the urease inhibitor composition contains tributylhydroquinone and an organic solvent. In another category, the organic solvent is selected from aromatic solvents, sulfoxides, green solvents, safe solvents, or combinations thereof. Within one category, the subject matter described herein relates to an agricultural composition comprising a urease inhibitor composition containing tributylhydroquinone and an organic solvent; and a solid urea-containing fertilizer, wherein the surface of the urea-containing fertilizer is coated with the urease inhibitor composition. Within one scope, the subject matter described herein relates to an agricultural composition comprising a urease inhibitor composition; and a solid urea-containing fertilizer, wherein the urease inhibitor composition comprises tributylhydroquinone; and an organic solvent, and wherein the surface of the urea-containing fertilizer is coated with the urease inhibitor composition. Within one scope, the subject matter described herein relates to a method for preparing the disclosed agricultural composition, the method comprising applying a urease inhibitor composition in liquid or dispersion form to the surface of a solid urea-containing fertilizer, thereby coating the solid urea-containing fertilizer, wherein the urease inhibitor composition comprises tributylhydroquinone and an organic solvent. Within one scope, the subject matter described herein relates to a urease inhibitor composition comprising: tributylhydroquinone; an additive selected from additives containing α,β-unsaturated carbonyl systems, acid-containing additives, ester-containing additives, aromatic additives, and ethylene glycol-containing additives; and an organic solvent, wherein the tributylhydroquinone and the additive components are present in a synergistic amount. The subject matter disclosed herein will now be described more fully below. However, thanks to the teachings presented in the foregoing description, those skilled in the art will conceive of many modifications and other embodiments of the subject matter disclosed herein. Therefore, it should be understood that the subject matter disclosed herein is not limited to the specific embodiments disclosed, and such modifications and other embodiments are intended to be included within the scope of the appended claims. In other words, the subject matter described herein encompasses all alternatives, modifications, and equivalents. Where any of the incorporated documents, patents, and similar materials (including, but not limited to, definitions of terms, usage of terms, and described techniques) differs from or conflicts with this application, this application shall prevail. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. All publications, patent applications, patents, and other references mentioned herein are incorporated herein by reference in their entirety. As mentioned above, urea is one of the main nitrogen fertilizers widely used in agricultural production. It is believed that if applied incorrectly, up to 40% of the nitrogen applied as urea can be lost because, after application in the field, it reacts with water via urease to form ammonium carbonate. Ammonium carbonate is unstable and decomposes into carbon dioxide and ammonia, which are volatile and released into the air. The loss can be significant and depends on a variety of factors, such as soil pH, soil temperature, soil moisture, soil cation exchange capacity, and soil organic matter content. Numerous methods have been developed or proposed for controlling the volatile nitrogen loss from urea, including the application of copper and zinc metal salts, boron compounds, organic urease inhibitors, acid coatings, polymer coatings, and the reaction of urea with aldehydes to form reactive adducts. For example, N-(butyl)thiophosphate triamine (NBPT) is one of the most known urease inhibitors in agriculture worldwide and is the active ingredient in the Agrotain® product line. However, this compound is thermally unstable and decomposes upon contact with water and acids. Once decomposed, it can no longer effectively inhibit urease. Therefore, the discovery and / or development of new types of urease inhibitors, compositions, and / or formulations exhibiting improved chemical / thermal stability, less susceptibility to decomposition, and greater environmental friendliness would be of great value. Advantageously, the compositions and methods described herein have been shown to provide the desired properties for the use of such urease inhibitors in the agricultural field, particularly when formulated with certain additive components. Specifically, beneficial properties have been observed when the urease inhibitor tertiary butylhydroquinone (tBHQ) is combined with additive components, such as (but not limited to) extended thermal / chemical stability, increased shelf life, reduced application rate, ease of handling, extended / prolonged urease inhibitory effect, and an acceptable environmental and toxicological profile. The additive components disclosed herein have a wider range of different chemical structures, and the observed beneficial properties are observed when both reagents (i.e., tBHQ and the additive components) are present. In some embodiments, the reagents are present in synergistically effective amounts. Therefore, the composition disclosed herein not only helps increase the availability of plant nutrients by inhibiting urease activity, but also extends the lifespan of its efficacy as a highly effective urease inhibitor due to the aforementioned beneficial properties. I. As defined herein, the term "aromatic ring system" refers to a ring system containing at least one heteroaryl ring and / or at least one aryl ring. As used herein, the term "heteroaryl" refers to a group comprising at least a five- or six-membered unsaturated and conjugated aromatic ring containing at least two cyclic carbon atoms and one to four cyclic heteroatoms selected from nitrogen, oxygen, and / or sulfur. Those skilled in the art may alternatively refer to such heteroaryl groups as "heteroaryl groups." In some embodiments, the heteroaryl group has two to twelve carbon atoms, or four to five carbon atoms, in the heteroaryl ring. Examples include, but are not limited to, pyridinyl, pyrimidinyl, and pyrimidyl groups. alkyl, pyrroleyl, furanyl, tetrazolyl, iso azole group, Diazolyl, benzothiophenyl, benzofuranyl, quinolinyl, isoquinolinyl and their analogues. As used herein, the term "aryl" refers to a group comprising at least one unsaturated and conjugated six-membered ring similar to a six-membered benzene ring. Aryl groups having such unsaturated and conjugated rings are also known as "aromatic" groups to those skilled in the art. Preferably, an aryl group has 6 to 12 ring carbons. Aryl groups include, but are not limited to, aromatic groups comprising phenyl and naphthyl ring groups. As used herein, the term "substituted" refers to a portion (such as heteroaryl, aryl, alkyl, and / or alkenyl) bonded to one or more additional organic or inorganic substituents. In some embodiments, the substituted portion comprises 1, 2, 3, 4, or 5 additional substituents or groups. Suitable organic and inorganic substituents include, but are not limited to, hydroxyl, cycloalkyl, aryl, substituted aryl, heteroaryl, heterocyclic, substituted heterocyclic, amino, monosubstituted amino, disubstituted amino, acetoxy, nitro, cyano, carboxyl, alkoxycarbonyl, alkylmethamide, substituted alkylmethamide, dialkylmethamide, substituted dialkylmethamide, alkylsulfonyl, alkylsulfinyl, thioalkyl, alkoxy, substituted alkoxy, or haloalkoxy, wherein these terms are defined herein. Unless otherwise specified herein, organic substituents may comprise 1 to 4 or 5 to 8 carbon atoms. When the substituted portion is bonded to it by more than one substituent, the substituents can be the same or different. As used herein, the term "unsubstituted" refers to a portion (such as heteroaryl, aryl, alkenyl and / or alkyl) that is not bonded to one or more additional organic or inorganic substituents as described above, meaning that such a portion is substituted only with hydrogen. As used herein, the terms “halogen,” “halogen,” or “halide” refer to fluorine, chlorine, bromine, or iodine atoms or ions. As used herein, the term "alkoxy" or "alkoxide" refers to an alkyl group bonded by a single terminal ether bond; that is, an "alkoxy" group may be defined as -OR, where R is an alkyl group as defined above. Examples include, but are not limited to, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, tert-butoxy, isobutoxy, and similar groups. As used herein, the term "substituted alkoxy" refers to an alkoxy group as defined above, having one, two, or more than two additional organic or inorganic substituents bonded to an alkyl group. Suitable organic and inorganic substituents include, but are not limited to, hydroxyl, cycloalkyl, amino, monosubstituted amino, disubstituted amino, acetoxy, nitro, cyano, carboxyl, alkoxycarbonyl, alkylmethamide, substituted alkylmethamide, dialkylmethamide, substituted dialkylmethamide, alkylsulfonyl, alkylsulfinyl, thioalkyl, thiohaloalkyl, alkoxy, substituted alkoxy, or haloalkoxy. When the alkyl group of an alkoxy group is bonded to it by more than one substituent, the substituents may be the same or different. As used herein, the term "amine" refers to an amino group formed by substituting one or more hydrogen atoms of ammonia with a substituent. 3) Structurally related substituted or unsubstituted trivalent nitrogen-containing groups (radical / group). As used herein, the term "monosubstituted amino group" means an amino group substituted with a group selected from alkyl, substituted alkyl or aralkyl groups, wherein such terms have the same definition as seen herein. As used herein, the term "disubstituted amino" means an amino group substituted with two identical or different substituents selected from aryl, substituted aryl, alkyl, substituted alkyl, or arylalkyl groups, wherein such terms have the same definition as disclosed herein. Examples include, but are not limited to, dimethylamino, methylethylamino, diethylamino, and the like. The two substituents may be identical or different. As used herein, the term "haloalkyl" refers to an alkyl group as defined above, which is substituted with one or more halogens (such as fluorine, chlorine, bromine, or iodine, preferably fluorine). Examples include, but are not limited to, trifluoromethyl, pentafluoroethyl, and similar groups. As used herein, the term "haloalkoxy" refers to a haloalkyl group as defined above, which is directly bonded to oxygen to form trifluoromethoxy, pentafluoroethoxy, and the like. As used herein, the term "acrylic" refers to a group containing a carbonyl (-C(O)-R group) group, wherein the R group is hydrogen or has 1 to 8 carbons. Examples include, but are not limited to, methicillin, acetyl, propionic acid, butyl, isobutyl, pentapropyl, hexyl, heptapropyl, benzoyl, and the like. As used herein, the term "acetylated group" refers to a group containing a carboxyl group (-OC(O)-R) group, wherein the R group contains hydrogen or 1 to 8 carbons. Examples include, but are not limited to, acetylated group, propionic group, butoxylated group, isobutoxylated group, benzyloxylated group, and the like. As used herein, the term "alkyl" refers to a saturated hydrocarbon group containing 1 to 12, 1 to 8, 1 to 6, 1 to 4, or 5 to 8 carbons. In some cases, alkyl refers to a saturated hydrocarbon group containing more than 8 carbons. Alkyl groups are structurally similar to acyclic alkanes modified by removing a hydrogen atom from the acyclic alkane and substituting it with a non-hydrogen group or free radical. Alkyl groups can be branched or unbranched. Low-carbon alkyl groups have 1 to 4 carbon atoms. High-carbon alkyl groups have 5 to 8 carbon atoms. Examples of alkyl, low-carbon alkyl, and high-carbon alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, secondary butyl, tertiary butyl, pentyl, tertiary pentyl, n-pentyl, n-hexyl, isooctyl, and similar groups. As used herein, the term "alkenyl" refers to an unsaturated hydrocarbon group containing 2 to 8, 2 to 6, 2 to 4, or 5 to 8 carbons and at least one carbon-carbon double bond. In some cases, alkenyl refers to an unsaturated hydrocarbon group containing more than 8 carbons. Unsaturated hydrocarbon groups are similar to alkyl groups as defined above and also contain at least one carbon-carbon double bond. Examples include, but are not limited to, vinyl, allyl, 2-butenyl, 3-butenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, and the like. The term "alkenyl" includes dienes and trienes having straight and branched chains. As used herein, the term "stereoisomer" refers to isomers that have the same composition (i.e., the same parts) but differ in the orientation of those parts in space. There are two types of stereoisomers: mirror isomers and non-mirror isomers. As used herein, the term "excess mirror isomer" (ee) is a measure of the purity of a racemic substance, describing the extent to which the amount of one mirror isomer in a sample is greater than the amount of another mirror isomer. The ee for a racemic mixture is 0%, while the ee for a single, completely pure mirror isomer is 100%. As used herein, the term "excess non-mirror image isomer" (de) is a measure of the purity of a purported substance, describing the extent to which the amount of one non-mirror image isomer in a sample is greater than the amount of another non-mirror image isomer. The de is 0% for racemic mixtures and 100% for a single, completely pure non-mirror image isomer. As used herein, the term "urease inhibitor" refers to the property of a compound to inhibit the activity of urease. Inhibition can be quantified as described elsewhere in this document. As used herein, the term "thermal stability" refers to the stability of a substance when exposed to a thermal stimulus over a given period of time. Examples of thermal stimuli include, but are not limited to, heat generated by a power source and / or heat generated by the sun. As used herein, the term "chemical stability" refers to a substance's resistance to structural changes when exposed to external influences such as air (which can cause oxidation), light (e.g., sunlight), moisture / humidity (from water), heat (from the sun), and / or chemicals. Exemplary chemicals include, but are not limited to, any organic or inorganic substance that can degrade the structural integrity of the compound of interest (e.g., tBHQ). As used herein, the term "effective amount" refers to the amount of the urease inhibitor composition and / or the amount of each component in the urease inhibitor composition (i.e., tBHQ and, where applicable, additive components) sufficient to achieve the urease inhibition described below. Further illustrative information regarding the amount to be used, the method of application, and the appropriate ratio is given below. Those skilled in this art will fully understand that such amounts can vary widely and depend on various factors such as weather, target species, location, application method, soil type, treated cultured plants or materials, and climatic conditions. As used herein, the term "green solvent" should be understood as an environmentally friendly or bio-solvent derived from the processing of agricultural crops. Examples of green solvents include ionic liquids, supercritical fluids, water, and supercritical water. Compared to traditional organic compounds, these solvents are eco-friendly, less toxic, and less harmful. As used herein, the term "safe solvent" should be understood as a solvent that is considered safe for the environment, and includes solvents such as water, ethanol, 1-propanol, acetone, acetonitrile, 2-propanol and methanol. As used herein, the term "synergistically effective" refers to the effect obtained from two different chemical substances (e.g., tBHQ and additive components) that is greater than the sum of their individual effects at the same dosage. The term "synergistic effect" means that the improvement in plant growth and development is related to at least one effect, which is greater than the additive effect. The additive effect is the expected effect produced by the individual action of each active compound. The synergistic effect is significantly greater than the additive effect. The expected activity of a given combination of two active compounds can be calculated as follows (see Colby, SR, "Calculating Synergistic and Antagonistic Responses of Herbicide Combinations", Weeds 15, pp. 20-22, 1967). The synergistic effect of the active ingredient combination used according to the examples allows for a reduction in the total application rate of the substance to achieve the same effect. As used herein, the term "micronutrient" is to be understood as nutrients that are essential for plant growth and health and require only very small amounts of nutrients. A non-restrictive list of micronutrients required by plants includes zinc (Zn), iron (Fe), manganese (Mn), copper (Cu), boron (B), molybdenum (Mo), and chlorine (Cl). As used herein, the term "particle size guide number" (SGN) refers to the diameter of fertilizer particles (in millimeters × 100) based on the median (or midpoint) within a batch. This means that half of the fertilizer particles are larger than the set SGN and half are smaller. This is determined by passing the fertilizer through various sieves and calculating the SGN using the amount retained by each sieve. For example, a fertilizer with an SGN of 250 will have 50% of its particles retained on or around a sieve with an opening of 2.5 mm. As used herein, the term "median" refers to the value at which half of the particle population is above and half is below the value, and is typically reported in millimeters (mm). For particle size distributions, the median is referred to as the D50 of the particles. As used herein, the term "uniformity index (UI)" refers to a variable representing the relative variation in particle size. A UI value in the range of approximately 40 to 60 indicates uniform particle size. A higher UI value indicates a more uniform particle size distribution in the product. Values ​​outside this range indicate greater variability in particle size distribution. UI is the ratio of larger (d95) particles to smaller (d10) particles in a given particulate composition multiplied by 100: the formula for calculating UI is = D10 / D95 × 100, where D10 = particle size (mm), corresponding to 10% pass, and D95 ​​= particle size (mm), corresponding to 95% pass. For example, a product with a UI of 50 means that the average small particle size (0.80 mm) is half the size of the average large particle size (1.6 mm). Products with different particle sizes and densities can cause inconsistent product distribution, resulting in inconsistent outcomes. As used herein, the term "sieve aperture size" refers to the U.S. sieve aperture size (or U.S. sieve mesh size), which is defined as the number of openings in a sieve per square inch. For example, a 36-mesh sieve will have 36 openings, while a 150-mesh sieve will have 150 openings. Because the size of the sieve (per square inch) is constant, a higher number of apertures results in smaller openings and fewer particles passing through. Generally, the U.S. sieve aperture size is measured using a minimum of 325 mesh (325 openings per square inch). Sometimes, product sieve aperture sizes are indicated by a minus (-) or a plus (+) sign. These symbols indicate that all particles are smaller than (-) or all particles are larger than (+) the sieve aperture size. For example, a product graded -100 will contain only particles that pass through a 100-mesh sieve. A +100 grade product will contain particles that do not pass through a 100-mesh sieve. When a dash or slash is used to indicate a product grade, it indicates that the particles in the product fall within both sieve aperture size ranges. For example, a 30 / 70 or 30 to 70 grade will contain only particles smaller than 30 mesh and larger than 70 mesh. As used in this article, the term "particle density" refers to what is reported as lbs / ft. 3 or kg / m 3 Particle density is the ratio of the mass to the volume of particles and / or granules. Unlike bulk density, particle density does not include the space between individual particles, but is a measurement of the particle density itself. As used herein, the term "soil" should be understood as a natural entity comprising living matter (e.g., microorganisms such as bacteria and fungi, animals and plants) and non-living matter (e.g., minerals and organic matter (e.g., organic compounds of varying degrees of decomposition), liquids and gases) existing on the land surface, characterized by the soil layer being distinguishable from the initial material as a result of various physical, chemical, biological, and anthropogenic processes. From an agricultural perspective, soil is primarily considered as a fixation site for plants and the main nutrient base (plant habitat). As used herein, the term "fertilizer" should be understood as a compound applied to promote the growth of plants and fruits. Fertilizers are typically applied through the soil (for absorption by plant roots) or through foliar supply (for absorption by leaves). The term "fertilizer" can be further divided into two main categories: a) organic fertilizers (composed of decaying plant / animal matter) and b) inorganic fertilizers (composed of chemicals and minerals). Organic fertilizers include manure, slurry, vermicompost, peat, seaweed, sewage, and guano. Green manure crops also grow periodically to add nutrients (especially nitrogen) to the soil. Manufactured organic fertilizers include compost, blood meal, bone meal, and seaweed extract. Other examples include enzyme-digested protein, fish meal, and feather meal. Decaying crop residues from previous years are another source of fertility. In addition, naturally occurring minerals such as phosphate rock, potassium sulfate, and limestone are also considered inorganic fertilizers. Inorganic fertilizers are typically manufactured using chemical methods (such as the Haber-Bosch process) or by chemically altering naturally occurring deposits (e.g., concentrated superphosphate). Naturally occurring inorganic fertilizers include Chilean sodium nitrate, phosphate rock, and limestone. As used herein, the term "manure" refers to organic matter used as organic fertilizer in agriculture. Depending on its structure, manure can be classified as liquid manure, semi-liquid manure, stabilized or solid manure, and straw manure. Depending on its source, manure can be classified as manure derived from animals or plants. Common forms of animal manure include feces, urine, farm slurry (liquid manure), or compost (FYM); however, FYM also contains a certain amount of plant matter (typically straw), which may have been used as animal bedding. Manure that can be used comes from animals including horses, cattle, pigs, sheep, chickens, turkeys, rabbits, and guano from seabirds and bats. When used as fertilizer, the application rate of animal manure is highly dependent on its source (animal type). Plant manure can be derived from any type of plant; however, it can also be specifically planted for the purpose of fertilizing the soil (e.g., legumes) to improve soil structure and fertility. In addition, plant materials used as manure may include the contents of the rumen of slaughtered ruminants, waste hops (residues from brewing beer), or seaweed. As used herein, the term "seed" encompasses all types of seeds, such as corn, seeds, fruits, tubers, seedlings, and similar forms. The seeds used may be the seeds of the applicable plants mentioned above, as well as the seeds of genetically modified plants or plants obtained through conventional cultivation methods. Throughout this specification and the claims, the terms “comprise,” “comprises,” and “comprising” are used in a non-exclusive sense unless the context requires otherwise and they are synonymous with “including,” “containing,” or “characterized in,” and are meant to be open-ended and do not exclude additional undescribed elements or method steps. As used herein, the term "about" when referring to a value means to encompass a variation relative to a specified amount of ±5% in some embodiments, ±2% in some embodiments, ±1% in some embodiments, ±0.5% in some embodiments, and ±0.1% in some embodiments, because such variation is suitable for performing the disclosed methods or using the disclosed compositions. When a range of values ​​is provided, it should be understood that, unless the context explicitly indicates otherwise, it includes all intermediate values ​​(to one-tenth of the unit of the lower limit) between the upper and lower limits of the range, and any other specified values ​​or intermediate values ​​within that range. It also includes the upper and lower limits of such smaller ranges that can be independently included within a smaller range, subject to any particular exclusive restriction within the specified range. Where the specified range includes one or both of the limits, it also includes ranges that exclude either or both of the included limits. Other definitions may follow below. II. The subject matter disclosed in this invention relates to a urease inhibitor composition comprising tert-butylhydroquinone (tBHQ) and an organic solvent. As mentioned above, such urease inhibitor compositions can exhibit desirable properties, such as increased chemical / thermal stability, increased shelf life, reduced volatility, reduced application rate, ease of use, extended / prolonged urease inhibition, and excellent environmental and toxicological profile, all of which generally contribute to improved efficacy in this field. In some embodiments, the urease inhibitor composition further comprises an additive component. When formulated alone or in combination with agricultural products (i.e., fertilizers), the additive component functions to enhance the beneficial properties of tBHQ. In some embodiments, the additive component and the organic solvent may be the same. In some embodiments, the organic solvent and the additive component may be different. The amount of tert-butylhydroquinone present in the urease inhibitor composition may vary. For example, in some embodiments, the amount of tert-butylhydroquinone, based on the total weight of the urease inhibitor composition, ranges from about 0.001 wt% to about 70 wt%, from about 0.01 wt% to about 65 wt%, from about 0.1 wt% to about 65 wt%, from about 1 wt% to about 65 wt%, from about 1 wt% to about 60 wt%, from about 1 wt% to about 50 wt%, from about 5 wt% to about 45 wt%, from about 10 wt% to about 40%, from about 15 wt% to about 35%, from about 20 wt% to about 30%, or from about 25 wt% to about 30 wt%. In some embodiments, the amount of tertiary butylhydroquinone present in the urease inhibitor composition is less than about 70% by weight, about 65% by weight, about 50% by weight, about 45% by weight, about 40% by weight, about 35% by weight, about 30% by weight, about 25% by weight, about 20% by weight, about 15% by weight, about 10% by weight, about 5% by weight, or less than about 1% by weight, based on the total weight of the urease inhibitor composition. The amount of additive components in the urease inhibitor composition may vary. For example, in some embodiments, the amount of additive components, based on the total weight of the urease inhibitor composition, ranges from about 0.001 wt% to about 60 wt%, from about 0.01 wt% to about 60 wt%, from about 0.1 wt% to about 60 wt%, from about 1 wt% to about 60 wt%, from about 2 wt% to about 55 wt%, from about 5 wt% to about 50 wt%, from about 10 wt% to about 45%, from about 15 wt% to about 40%, from about 20 wt% to about 35%, from about 20 wt% to about 30%, or from about 20 wt% to about 25 wt%. In some embodiments, the amount of additive components present in the urease inhibitor composition, based on the total weight of the urease inhibitor composition, is less than about 60 wt%, from about 55 wt%, from about 50 wt%, from about 45 wt%, from about 40 wt%, from about 35 wt%, from about 30 wt%, from about 25 wt%, from about 20 wt%, from about 15 wt%, from about 10 wt%, from about 5 wt%, or less than about 1 wt%. In some embodiments, the relative amounts of tert-butylhydroquinone and additive components present in the urease inhibitor composition may vary. In some embodiments, the amounts of tert-butylhydroquinone and additive components present in the urease inhibitor composition are within the range of a weight ratio of tert-butylhydroquinone to additive components of about 1:1000 to about 1000:1, about 1:500 to about 500:1, about 1:250 to about 250:1, about 1:150 to about 150:1, about 1:100 to about 100:1, about 1:75 to about 75:1, about 1:50 to about 50:1, about 1:25 to about 25:1, about 1:15 to about 15:1, about 1:10 to about 10:1, about 1:5 to about 5:1, or about 1:2 to about 2:1. In some embodiments, tert-butylhydroquinone and additive components are present in the urease inhibitor composition in synergistically effective amounts. The tertiary butylhydroquinone, additive components, and organic solvents are discussed in more detail below. A. Tertiary butylhydroquinone (tBHQ) is a synthetic aromatic organic compound. It is a derivative of hydroquinone (a type of phenol) with a tertiary butyl group substitution, and has the following chemical structure: TBHQ is primarily used in food as a preservative for unsaturated vegetable oils and many edible animal fats, where it acts as an antioxidant. In addition, TBHQ can be used in other applications such as: (a) as a fixative in perfumes to reduce evaporation and improve stability; (b) as a stabilizer in industry to inhibit the self-polymerization of organic peroxides; (c) as an antioxidant in fuels, such as biodiesel; and (d) as an additive in varnishes, paints, resins, and oilfield additives. However, its effect on urease inhibition, particularly in soil, had not been previously revealed. Therefore, the finding that tributylhydroquinone exhibits extremely strong inhibitory properties against urease when exposed to soil, either alone or in combination with fertilizers, especially urea-containing fertilizers, is both unexpected and surprising. Further research indicates that its strong urease inhibitory properties are largely due to the presence of tributylalkyl substituents in the compound, as unsubstituted hydroquinone exhibits significantly weaker urease inhibitory properties. B. The additive components disclosed herein are compounds that, when added to a urease inhibitor composition, further promote and / or enhance the urease inhibitory properties of tBHQ. In some embodiments, the additive components have a synergistic effect on the enzyme inhibitory properties of tBHQ. In some embodiments, such additive components are selected from compound classes such as additives containing α,β-unsaturated carbonyl systems, acid-containing additives, ester-containing additives, aromatic additives, ethylene glycol-containing additives, or combinations thereof. While not bound by theory, it is believed that such compounds can participate in hydrogen bonding with tert-butylhydroquinone and may therefore be suitable co-solvents in the disclosed urease-inhibiting compositions. In some embodiments, the additive component comprises an additive containing an α,β-unsaturated carbonyl system. In some embodiments, the additive containing an α,β-unsaturated carbonyl system is derived from acyclic monoterpenes and / or contains one or more isoprene units. In some embodiments, the additive containing an α,β-unsaturated carbonyl system contains an aromatic ring system. Exemplary additives containing an α,β-unsaturated carbonyl system include (but are not limited to) citral (3,7-dimethyl-2,6-octadienal), isopropylacetone, α-pentylcinnamaldehyde, and coumarin (2H- (en-2-one) or combinations thereof. In some embodiments, the additive component is isopropyl acetone. In some embodiments, the additive component comprises an additive containing an aromatic ring system, which may be any compound containing an aromatic ring system (e.g., a 6-membered aromatic ring, such as an aryl or a heteroaromatic moiety, such as a heteroaryl). In some embodiments, this aromatic ring system is associated with one or more hydrophilic groups (i.e., hydroxyl (-OH), alkoxide (-O(C)). 2-C 6-alkyl), ester (-C(=O)O(C) 1-C 6-alkyl)) and / or acetyl (-C(=O)(C)) 1-C 6-alkyl) substitution. Exemplary aromatic additives include (but are not limited to) butylated hydroxyanisole, eugenol, salicylaldehyde, acetophenone, methyl salicylate, or combinations thereof. In some embodiments, the additive component comprises an acid-containing additive, which may contain one or more carboxylic acid (-COOH) groups or sulfonic acid (-SO) groups. 3H) groups and / or phosphoric acid (-PO) Any compound containing a 3H group. In some embodiments, the acid-containing additive contains a C group that may be saturated or unsaturated. 2-C 10 Alkyl chain. In some embodiments, the acid-containing additive is a carbocyclic acid. Exemplary acid-containing additives include, but are not limited to, itaconic acid, adipic acid, maleic acid, octanoic acid, ethyl maltol, ascorbic acid, acetopropionic acid, or combinations thereof. In some embodiments, the additive component comprises an ester-containing additive. In some embodiments, the ester-containing additive is a substituted or unsubstituted C. 2-C 12 Alkyl esters. In some embodiments, such esters are substituted with a hydrophilic group such as a hydroxyl (-OH). Exemplary ester-containing additives include (but are not limited to) triethyl citrate, isobornyl acetate, propylene carbonate, ethyl lactate, or combinations thereof. In some embodiments, the additive component comprises an ethylene glycol-containing additive, which is an alkyl compound containing at least two hydroxyl (-OH) groups. Exemplary ethylene glycol-containing additives include (but are not limited to) diethylene glycol monoethyl ether, ethylene glycol, monobutyl ether, or combinations thereof. In some embodiments, the additive component comprises a stereoisomer. In some embodiments, the additive component comprises a mirror-image isomer. In such embodiments, the additive component may comprise a mirror-image isomer purity of at least about 50%, about 60%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95%, about 98%, about 99%, about 99.5%, or at least about 99.8% mirror-image isomer excess (ee). In some embodiments, the additive component comprises a non-mirror-image isomer. In such embodiments, the additive component may comprise a non-mirror-image isomer purity of at least about 50%, about 60%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95%, about 98%, about 99%, about 99.5%, or at least about 99.8% non-mirror-image isomer excess (de). In some embodiments, the additive component is racemic. C. In some embodiments, the organic solvent is one or more polar organic solvents. In some embodiments, one or more polar organic solvents are approved by the EPA. EPA-approved solvents are those that they find in the electronic version of the Federal Regulations, such as in Section 180 of Chapter I, Part E of Title 40. EPA-approved solvents include, but are not limited to, the solvents listed in Table 1. Table 1. EPA-approved solvents In some embodiments, the organic solvent is selected from arsenic, arsenic trioxide, aromatic solvents, halogenated solvents, glycol solvents, fatty acid solvents, and solvents containing acetates, ketones, ether polyols, amides, and combinations thereof. In some embodiments, the organic solvent is environmentally friendly, such as green solvents, safe solvents, or combinations thereof. In some embodiments, one or more organic solvents are relatively anhydrous. In some embodiments, the organic solvent contains less than about 10% w / w, about 9% w / w, about 8% w / w, about 7% w / w, about 6% w / w, about 5% w / w, about 4% w / w, about 3% w / w, about 2% w / w, about 1% w / w, about 0.9% w / w, about 0.8% w / w, about 0.7% w / w, about 0.6% w / w, about 0.5% w / w, about 0.4% w / w, about 0.3% w / w, or less than about 0.1% w / w by weight of the solvent. In some embodiments, the organic solvent is a liquid at 20°C. In some embodiments, the organic solvent is sulfonium. Sulfonium is a solvent containing sulfonyl functional groups attached to two carbon atoms and having the general formula R'-S(=O). 2-R'' indicates that both R groups contain carbon atoms. The argillaceous solvent can be, but is not limited to, cyclobutane, methylcyclobutane (3-methylcyclobutane), dimethyl argillaceous, or combinations thereof. In some embodiments, the organic solvent is an argillaceous solvent. The argillaceous solvent contains a sulfinyl (SO) functional group attached to two carbon atoms and is generally represented by R'-S(=O)-R'', where both R groups contain carbon atoms. The argillaceous solvent can be, but is not limited to, dimethyl argillaceous. In some embodiments, the organic solvent is an ether polyol. The ether polyol contains multiple hydroxyl groups. The ether polyol solvent may be, but is not limited to, polyethylene glycol, polypropylene glycol, polyalkylene glycol, and related compounds. In some embodiments, the polyethylene glycol has two terminal alcohols (e.g., polyethylene glycol 3350). Exemplary polyethylene glycols include, but are not limited to, diethylene glycol, triethylene glycol, or combinations thereof. Exemplary polypropylene glycols include, but are not limited to, dipropylene glycol, tripropylene glycol, or combinations thereof. In some embodiments, the polypropylene glycol has three terminal alcohols. Exemplary polypropylene glycols having three terminal alcohols (referred to as propoxylated glycerol) include, but are not limited to, Dow PT250 (a glycerol ether polymer with a molecular weight of 250 containing three terminal hydroxyl groups) and Dow PT700 (a glycerol ether polymer with a molecular weight of 700 containing three terminal hydroxyl groups). In some embodiments, the ether polyol comprises polyethylene or polypropylene glycol in the molecular weight range of about 200 to about 10,000 Da. In some embodiments, one or more hydroxyl groups present in the ether polyol are modified. For example, in some embodiments, one or more hydroxyl groups present in the ether polyol are alkylated and / or esterified. Exemplary modified ether polyols include, but are not limited to, triacetin, diethylene glycol n-butyl ether, diethylene glycol ethyl ether, diethylene glycol methyl ether, dipropylene glycol ethyl ether acetate, or combinations thereof. In some embodiments, the organic solvent is a diol solvent. A diol is an alcohol containing two hydroxyl groups (-OH) attached to different carbon atoms (e.g., terminal carbon atoms). Exemplary diol solvents include, but are not limited to, ethylene glycol and / or propane-1,2,3-triol. In some embodiments, the organic solvent is a fatty acid solvent. Generally, a fatty acid is characterized as a compound having a carboxylic acid and an aliphatic chain containing multiple carbon atoms, which may be saturated or unsaturated. In some embodiments, the fatty acid contains between 3 and 20 carbon atoms. Examples of fatty acid solvents include, but are not limited to, dialkylamides of fatty acids (e.g., dimethylamide). Examples of dimethylamides of fatty acids include, but are not limited to, dimethylamide of octanoic acid, C... 8-C 10 Dimethyl acetamide (Agnique AMD810), dimethyl lactamide (Agnique AMD3L), or combinations thereof, of fatty acids. In some embodiments, the organic solvent is a ketone-containing solvent, which may be any solvent containing a carbonyl functional group (C=O). Examples of ketone-containing solvents include, but are not limited to, isophorone, trimethylcyclohexanone, or combinations thereof. In some embodiments, the organic solvent is an acetate-containing solvent. Examples of acetate-containing solvents include, but are not limited to, acetate, hexyl acetate, heptyl acetate, or combinations thereof. In some embodiments, the organic solvent is an amide-containing solvent, which may be any solvent containing an amide functional group (-NR'C(=O)R''; where R is an alkyl group). Examples of amide-containing solvents include, but are not limited to, Rhodiasolv ADMA10 (CAS Registry No. 14433-76-2; N,N-dimethyloctylamine), Rhodiasolv ADMA810 (CAS Registry No. 1118-92-9 / 14433-76-2; a blend of N,N-dimethyloctylamine and N,N-dimethyldecylamine), Rhodiasolv PolarClean (CAS Registry No. 1174627-68-9; methyl 5-(dimethylamino)-2-methyl-5-sphenoxyvalerate), or combinations thereof. In some embodiments, the organic solvent is a halogenated solvent, which may be any solvent containing one or more halogens (i.e., chlorine, bromine, iodine, and fluorine). In some embodiments, the halogenated solvent is a halogenated aromatic hydrocarbon. An example of a halogenated aromatic hydrocarbon is chlorobenzene. In some embodiments, the halogenated solvent is a halogenated aliphatic hydrocarbon. An example of a halogenated aliphatic hydrocarbon is 1,1,1-trichloroethane. In some embodiments, the organic solvent is an aromatic solvent. In some embodiments, the aromatic solvent is an aromatic hydrocarbon. Exemplary aromatic hydrocarbons include, but are not limited to, benzene, naphthyl, or combinations thereof. In some embodiments, the aromatic hydrocarbon is substituted. Examples of substituted aromatic hydrocarbons include, but are not limited to, alkyl-substituted benzene and / or alkyl-substituted naphthalene. Examples of alkyl-substituted benzene include xylene, toluene, propylbenzene, or combinations thereof. In some embodiments, the organic solvent comprises xylene. In some embodiments, the aromatic hydrocarbon is a mixture of substituted and unsubstituted aromatic hydrocarbons, such as, but not limited to, mixtures of cycloalkanes and alkyl-substituted naphthalenes. In some embodiments, the aromatic solvent is a mixture of hydrocarbons. For example, in some embodiments, the aromatic solvent is Aromatic 100, a solvent containing naphtha (CAS Registry No. 64742-95-6), which is mainly composed of aromatic hydrocarbons (C 8 to C 10 A hydrocarbon composition obtained by aromatic stream distillation of the following: or Aromatic 200, a solvent containing a mixture of the following: aromatic hydrocarbons (C4H ... 11 -C 14 ); Naphthalene present in 5-20% by weight (CAS Registry No. 91-20-3); Aromatic hydrocarbons present in 5-15% by weight (C 10 ), excluding naphthalene; and aromatic hydrocarbons present in 5-15% by weight (C 15 -C 16 In some embodiments, the aromatic hydrocarbon is a mixture of aromatic 100 and aromatic 200. In some embodiments, the organic solvent is a green solvent. Exemplary green solvents other than those mentioned above include (but are not limited to) water, methanol, acetone, dimethyl carbonate, ethyl acetate, propyl acetate, 1-propanol, 1-butanol, toluene, dimethyl sulfoxide (DMSO), acetic acid, acetonitrile, tetrahydrofuran (THF), ethylene glycol, 2-methyltetrahydrofuran, methyl tert-butyl ether, methylcyclohexane, xylene, cyclohexane, isooctane, heptane, methyl ethyl ketone, ethylene glycol, methyl tert-butyl ether, toluene, cyclohexane, methylcyclohexane, or combinations thereof. In some embodiments, the green solvent comprises DMSO. In some embodiments, the green solvent comprises xylene. In some embodiments, the organic solvent is a safe solvent. Exemplary safe solvents other than those mentioned above include (but are not limited to) simple alcohols (e.g., methanol, ethanol, isopropanol, etc.) and / or alkanes (e.g., heptane, hexane, etc.). In some embodiments, the organic solvent is the same as the additive components described above, meaning that the organic solvent is selected from the additive components described above. In some embodiments, the composition containing tributylhydroquinone (and, where applicable, additive components) may be formulated with two or more different solvent types. Tributylhydroquinone (and, where applicable, additive components) may be formulated with two different solvent types that exhibit high solvation, low volatility, and environmental and toxicological profiles. The two different solvent types may be selected from two different aromatic solvents, two different sulfides, two different acetylamine-containing solvents, two different ether polyols, two different sulfides, two different acetylamine-containing solvents, two different fatty acid solvents, two different green solvents, two different safe solvents, or sulfides and aromatic solvents. In some embodiments, the two different solvent types are xylene and dimethyl sulfide. The amounts of each solvent type present in the composition may vary. In some embodiments, two or more different solvent types of first solvent (e.g., xylene) are present in amounts ranging from about 10% to about 90%, about 20% to about 80%, about 25% to about 70%, about 30% to about 60%, about 35% to about 55%, or about 40% to about 50% w / w, based on the total weight of the composition. In some embodiments, two or more different solvent types of first solvent are present in amounts less than about 95%, about 90%, about 85%, about 80%, about 75%, about 70%, about 65%, about 60%, about 55%, about 50%, about 45%, about 40%, about 35%, about 30%, about 25%, about 20%, about 15%, about 10%, about 5%, or less than about 1% w / w, based on the total weight of the composition. In some embodiments, two or more different solvent types of a second solvent (e.g., dimethyl sulfoxide (DMSO)) are present in amounts ranging from about 10% to about 90%, about 20% to about 80%, about 25% to about 70%, about 30% to about 60%, about 35% to about 55%, and about 40% to about 50% w / w, based on the total weight of the composition. In some embodiments, two or more different solvent types of a second solvent are present in amounts less than about 95%, about 90%, about 85%, about 80%, about 75%, about 70%, about 65%, about 60%, about 55%, about 50%, about 45%, about 40%, about 35%, about 30%, about 25%, about 20%, about 15%, about 10%, about 5%, or less than 1% w / w, based on the total weight of the composition. In some embodiments, the relative amounts of the two different solvent types may vary. For example, in some embodiments, the first solvent and the second solvent are present in the urease inhibitor composition in amounts ranging from about 100:1 to about 1:100, about 75:1 to about 1:75, about 50:1 to about 1:50, about 25:1 to about 1:25, about 10:1 to about 1:10, about 5:1 to about 1:5, about 3:1 to about 1:3, about 2:1 to about 1:2, or about 1:1 by weight. In some embodiments, the first solvent is dimethyl sulfoxide and the second solvent is xylene, and these are present in the urease inhibitor composition in amounts ranging from about 1:2 to about 2:1 or about 1:1 by weight. The organic solvent may be present in the composition in an amount from 0.1% w / w to about 99.9% w / w based on the total weight of the urease inhibitor composition. In some embodiments, the amount of organic solvent, based on the total weight of the composition, is less than about 95%, about 90%, about 85%, about 80%, about 75%, about 70%, about 65%, about 60%, about 55%, about 50%, about 45%, about 40%, about 35%, about 30%, about 25%, about 20%, about 15%, about 10%, or less than about 5% w / w. In examples, the amount of organic solvent, based on the total weight of the composition, is about 5% to about 98%, about 10% to about 90%, about 20% to about 80%, about 25% to about 75%, about 30% to about 70%, about 35% to about 65%, about 40% to about 60%, or about 45% to about 55% w / w. In some embodiments, the urease inhibitor compositions disclosed herein may be formulated to include one or more co-regulators. Exemplary co-regulators include (but are not limited to) any co-regulators known in the art, such as solvents, surfactants (i.e., active ingredients), dispersants, carriers, stabilizers, wetting agents, emulsifiers, defoamers, preservatives, dyes, etc. In some embodiments, the urease inhibitor compositions disclosed herein are formulated to be free of any co-regulators. In some embodiments, the urease inhibitor compositions disclosed herein consist of tBHQ and an organic solvent. In some embodiments, the urease inhibitor compositions consist of tBHQ, an organic solvent, and additive components. III. Any of the urease inhibitor compositions described in the agricultural compositions may be combined with one or more other ingredients selected from the group consisting of: fertilizers; agriculturally active compounds; seeds; compounds having urease inhibitory activity, nitrification inhibitory activity, pesticides, herbicides, insecticides, fungicides, acaricides and the like. In some embodiments, the described urease inhibitor composition may be mixed with a fertilizer product in liquid form or applied as a surface coating to a fertilizer product in solid form. In some embodiments, the described urease inhibitor composition is thoroughly mixed with a fertilizer product in liquid form. In such products containing the combined fertilizer / urease inhibitor composition, tributylhydroquinone (or the urease inhibitor composition) may be present in the combined product at levels of about 0.001 g to about 20 g per 100 g of fertilizer, about 0.01 g to about 7 g per 100 g of fertilizer, about 0.08 g to about 5 g per 100 g of fertilizer, or about 0.09 g to about 2 g per 100 g of fertilizer. In the case of products containing the combined fertilizer / urease inhibitor composition, the combined product may allow for the application of tributylhydroquinone (or the urease inhibitor composition) at levels of about 10 to 150 g per acre of soil, about 30 to 125 g per acre of soil, or about 40 to 120 g per acre of soil. In some embodiments, the described urease inhibitor composition is applied to a fertilizer surface in liquid or dispersion form. When the urease inhibitor composition is used as a coating, the urease inhibitor composition may comprise between about 0.005% and about 15% by weight of coated fertilizer product, between about 0.01% and about 10% by weight of coated fertilizer product, between about 0.05% and about 2% by weight of coated fertilizer product, or between about 0.5% and about 1% by weight of coated fertilizer product. In some embodiments, the fertilizer coated with the described urease inhibitor composition is a solid urea-containing fertilizer. In some embodiments, the solid urea-containing fertilizer is in granular or pellet form. In some embodiments, the shape of the granules or pellets is circular (e.g., spherical or egg-shaped), but is not limited thereto. Additional shapes include cubic, rectangular, and / or irregular shapes. In some embodiments, the granular / pellet-containing urea fertilizer contains granules / pellets having an average sieve aperture size ranging from about 1 to about 100 (e.g., 1 / 100), about 10 to about 100 (e.g., 10 / 100), or about 16 to about 100 (e.g., 16 / 100) U.S. sieve apertures. In other embodiments, the granular / pellet-containing urea fertilizer contains granules / pellets having an average sieve aperture size ranging from about 4 to about 30 (e.g., 4 / 30), about 5 to about 24 (e.g., 5 / 24), or about 6 to about 16 (e.g., 6 / 16) U.S. sieve apertures. In some embodiments, the median particle size (d50) of the granular / pellet-sized urea fertilizer is in the range of about 0.1 to 3.5 mm, about 0.5 to about 2.5 mm, or about 0.9 to about 1 mm (or about 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.1, 2.2, 2.3, 2.4, or 2.5 mm). In some embodiments, the median particle size (d50) of the granular / pellet-sized urea fertilizer is less than about 3.5 mm, 3.0 mm, 2.5 mm, 2.0 mm, 1.5 mm, or 1.0 mm. In some embodiments, the granular / pellet-containing urea fertilizer contains granules / pellets having a particle size range of about 10 to about 500, about 50 to about 450, about 75 to about 400, about 80 to about 250, or about 90 to about 230 particle size guide numbers (SGN). In some embodiments, the granular / granular urea fertilizer contains granules / granules having a uniformity index (UI) ranging from about 30-40, 30-50, 35-45, 40-60, 40-50 or 50-60 (indicating uniform particle size). In some embodiments, the granular / pellet-sized urea fertilizer contains urea with a particle density ranging from about 10-150 lbs / ft. 3 30-100 lbs / ft 3 Approximately 45-85 lbs / ft 3 Or approximately 45-60 lbs / ft 3 Particles / spheres. In some embodiments, the granular / pellet-sized urea fertilizer contains urea with a bulk density of about 10-150 lbs / ft. 3 30-100 lbs / ft 3 Approximately 45-75 lbs / ft 3 Approximately 50-70 lbs / ft 3 Or approximately 60-70 lbs / ft 3 Particles / granules. In some embodiments, the bulk density is a "loose" bulk density. Granulated (urea-containing) fertilizers can be produced using any known granulation method within this technology. In some embodiments, granulation of urea-containing fertilizers can be achieved using dry granulation methods, such as compaction granulation. During this physical process, fine powdery urea-containing particles are formed into granules without compromising the chemical stability and / or structural integrity of the urea source used. This allows the product to be processed, blended, and spread uniformly in farmland while retaining its unique chemical properties. In some embodiments, granulation of urea-containing fertilizers can be achieved via generalized granulation, drum granulation, extrusion, traying, or pelletizing, but is not limited to these methods. A. In some embodiments, the agricultural product is a fertilizer. The fertilizer can be a solid fertilizer, such as (but not limited to) granular fertilizer, and the urease inhibitor composition can be applied to the fertilizer in the form of a liquid dispersion. However, the fertilizer can also be in liquid form, and the urease inhibitor composition in liquid form can be mixed with the liquid fertilizer. The fertilizer can be selected from the group consisting of: starting fertilizers, phosphate-based fertilizers, nitrogen-containing fertilizers, phosphorus-containing fertilizers, potassium-containing fertilizers, calcium-containing fertilizers, magnesium-containing fertilizers, boron-containing fertilizers, chlorine-containing fertilizers, zinc-containing fertilizers, manganese-containing fertilizers, copper-containing fertilizers, urea and ammonium nitrite-containing fertilizers, and / or and / or molybdenum-containing fertilizers. In some embodiments, the fertilizer is or contains urea and / or ammonia, including anhydrous ammonia fertilizers. In some embodiments, the fertilizer contains nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, or micronutrients available to plants. In some embodiments, the fertilizer is a solid, granular, fluid suspension, gas, or solid solution fertilizer. In some embodiments, the fertilizer contains micronutrients. Micronutrients are essential elements required by plants in small amounts. In some embodiments, the fertilizer comprises metal ions selected from the group consisting of: Fe, Mn, Mg, Zn, Cu, Ni, Co, Mo, V, and Ca. In some embodiments, the fertilizer comprises gypsum, a member of the magnesium sulfate group, potassium products, potassium magnesium sulfate, elemental sulfur, or potassium magnesium sulfate. Such fertilizers may be granular, liquid, gaseous, or a mixture (e.g., a suspension of solid fertilizer particles in a liquid substance). For example, in some embodiments, the fertilizer is a urea-containing fertilizer in solid form. In another embodiment, the fertilizer is a urea-containing fertilizer in liquid form. In some embodiments, the urease inhibitor composition is combined with any suitable liquid fertilizer or used as a coating for any suitable solid fertilizer for application to farmland and / or crops. The described urease inhibitor composition can be applied by applying fertilizer. The urease inhibitor composition can be applied before, after, or simultaneously with the application of fertilizer. Fertilizer products containing urease inhibitor compositions can be applied in any manner that benefits the crop of interest. In some embodiments, the product is applied to the growing medium in a strip or column application manner. In some embodiments, the product is applied to the growing medium or throughout the growing medium before sowing or transplanting the desired crop plants. In some embodiments, the product is applied to the root zone of the growing plant. Plants and / or crops include plants such as cereals, fruit trees, fruit shrubs, cereals, legumes, and combinations thereof. Exemplary crops include (but are not limited to) rye, oats, corn, rice, sorghum, triticale, rapeseed, rice, soybeans, sugar beets, sugarcane, turf, fruit trees, palm trees, coconut trees or other nuts, grapes, fruit shrubs, fruit trees, sugar beets, fodder sugar beets, pome fruits, stone fruits, apples, pears, plums, peaches, almonds, cherries, and berries such as strawberries, raspberries, and blackberries; legumes such as beans, lentils, peas, soybeans, and peanuts; oilseed plants such as rapeseed, mustard, and sunflowers; cucurbitaceous plants such as zucchini, cucumbers, and melons; and fiber plants such as cotton. Flowers, flax, hemp, jute; citrus fruits, such as oranges, lemons, grapefruits and tangerines; vegetables, such as spinach, lettuce, asparagus, cabbage, carrots, onions, tomatoes, potatoes, sweet potatoes, yams, peppers; and ornamental plants, such as flowers, shrubs, broad-leaved trees and evergreens, such as conifers, cereals, wheat, barley, oats, winter wheat, spring wheat, winter barley, spring barley, rye, rye, winter durum wheat, spring durum wheat, winter oats, spring oats, forage cereals, rye grass, chicken feet grass, fescue grass, timothy grass, seed grass and meadows and any combination thereof. B. Some examples of seeds describe agricultural seeds coated with a urease inhibitor composition as disclosed herein. The urease inhibitor composition may be present in the seed product at levels of about 0.001% by weight to about 10% by weight, about 0.004% by weight to about 2% by weight, about 0.01% by weight to about 1% by weight, or about 0.1% by weight to about 1% by weight (or not exceeding about 10% by weight, about 9% by weight, about 8% by weight, about 7% by weight, about 6% by weight, about 5% by weight, about 4% by weight, about 3% by weight, about 2% by weight, about 1% by weight, about 0.5% by weight, about 0.1% by weight, about 0.01% by weight, or not exceeding 0.001% by weight). The seeds may be, but are not limited to, wheat, barley, oats, black wheat, rye, rice, corn, soybean, cotton, or rapeseed. C. In some other embodiments, urease-inhibiting compounds, nitrification-inhibiting compounds, pesticides, herbicides, insecticides, fungicides, and / or acaricides are combined with the urease-inhibiting compositions disclosed herein. As used herein, "insecticide" means any agent with insecticidal activity (e.g., herbicides, insecticides, fungicides) and is preferably selected from the group consisting of insecticides, herbicides, and mixtures thereof, but generally does not include materials that claim to have phytofertilizing effects, such as sodium borate and zinc compounds, such as zinc oxide, zinc sulfate, and zinc chloride. For a list of unrestricted insecticides, see "Farm Chemicals Handbook 2000, 2004" (Meister Publishing Co, Willoughby, OH), which is hereby incorporated by reference in its entirety. Examples of herbicides include, but are not limited to, acetochlor, alachlor, aminopyralid, atrazine, benoxacor, bromoxynil, carfentrazone, chlorsulfuron, clodinafop, clopyralid, dicamba, diclofop-methyl, dimethenamid, and fenoxapro. p), flucarbazone, flufenacet, flumetsulam, flumiclorac, fluroxypyr, glufosinate-ammonium, glyphosate, halosulfuron-methyl, imazamethabenz, imazamox, imazapyr, imazaquin, imazethapyr, isosulfuron-methyl Isoxaflutole, quinclorac, MCPA, MCP amine, MCP ester, mefenoxam, mesotrione, metolachlor, s-metolachlor, metribuzin, metsulfuron methyl, nicosulfuron, paraquat, pendimethalin, picloram, primisulfuron, propoxycarbazone, prosulfuron, pyraflufen ethyl), rimsulfuron, simazine, sulfursulfuron, thifensulfuron, toramezone, tralkoxydim, triallate, triasulfuron, tribensulfuron, trifluralin, 2,4-D, 2,4-D amine, 2,4-D ester and their analogues. Examples of insecticides include (but are not limited to) 1,2-dichloropropane, 1,3-dichloropropene, abamectin, acephate, acequinocyl, acetamiprid, acethion, acetoprole, acrylonitrile, acrylonitrile, alanycarb, aldicarb, aldoxycarb, aldrin, allethrin, allosamidin, allyxycarb, alpha cypermethrin, and alpha ecdysone. ecdysone, amidithion, amidoflumet, aminocarb, amiton, amitraz, anabasine, arsenous oxide, athidathion, azadirachtin, azamethiphos, azinphos ethyl, azinphos methyl, azobenzene, azocyclotin, azothoate, barium hexafluorosilicate, barthrin, benclothiaz, bendiocarb, benfuracarb, benoxafos, bensultap, benzoximate, benzyl benzoate, beta cyfluthrin, beta cypermethrin, bifenazate, bifenthrin, binapacryl, bioallethrin, bioethanomethrin, bioopermethrin, bistrifluron, borax, boric acid, bromfenvinfos, bromodiphenyl ether DDTDDT, bromocyclen, bromophos, bromophos ethyl, bromopropylate, bufencarb, buprofezin, butacarb, butathiofos, butocarboxim, butonate, butoxycarboxim, cadusafos, calcium arsenate, calcium polysulfide, camphechlor, carbanolate, carbaryl, carbofuran, carbon disulfide, carbon tetrachloridetetrachloride, carbophenothion, carbosulfan, cartap, chinomethionat, chlorantraniliprole, chlorbenside, chlorbicyclen, chlordane, chlordecone, chlordimeform, chlorethoxyfos, chlorfenapyr, chlorfenethol, chlorfenson, chlorfensulphide, chlorfenvinphos, chlorfluazuron, chlormephos, chlorobenzilate, chloroform, chloropyridinium chloride mebuform, chloromethiuron, chloropicrin, chloropropylate, chlorphoxim, chlorprazophos, chlorpyrifos, methyl chlorpyrifos, chlorthiophos, chromafenozide, cinerin I, cinerin II, cismethrin, cloethocarb, clofentezine, closantel, clothianidin, copper acetoarsenite, copper arsenate, copper naphthenate, copper oleate, coumaphos, coumithoate, crotamiton, crotoxyphos, cruentaren A and BB) Crufomate, Cryolite, Cyanofenphos, Cyanophos, Cyanthoate, Cycyclethrin, Cycloprothrin, Cyenopyrafen, Cyflumetofen, Cyhalothrin, Cyhexatin, Cypermethrin, Cyphenothrin, Cyromazine, Cythioate, D-Limonene, Dazomet, DBCP, DCIP, DDT, Decarbofuran, Deltamethrin, Demephion, Demeton O, Demeton S, Demeton Methyl Demetonmethyl), systemic phosphorus O, systemic phosphorus O methyl, systemic phosphorus S, systemic phosphorus S methyl, systemic phosphorus S methanesulfonic acid, diafenthiuron, dialifos, diamidophos, diazinon, diapthon, dichlofenthion, dichlofluanid, dichlorvos, dicofol, dicresyl, dicrotophos, dicyclanil, di... Eldrin, dienochlor, diflovidazin, diflubenzuron, dilor, dimefluthrin, dimefox, dimetan, dimethoate, dimethrin, dimethylvinphos, dimetilan, dinex, dinobuton, dinocap, dinocap-4, dinocap-6, and chlorpyrifos. (dinocton), dinopenton, dinoprop, dinosam, dinosulfon, dinotefuran, dinoterbon, diofenolan, dioxabenzofos, dioxacarb, dioxathion, diphenyl phosphate, disulfiram, disulfoton, dithicrofos, DNOC, dofenapyn. Doramectin, ecdysterone, emamectin, EMPC, empenthrin, endosulfan, endothion, endrin, EPN, epofenonane, eprinomectin, esfenvalerate, etaphos, ethiofencarb, ethion, ethiprole, ethoatemethyl), ethoprophos, ethyl DDD, ethyl formate, ethylene dibromide, ethylene dichloride, ethylene oxide, etofenprox, etoxazole, etrimfos, EXD, famphur, fenamiphos, fenazaflor, fenazaquin, fenbutatin oxide), fenchlorphos, fenethacarb, fenfluthrin, fenitrothion, fenobucarb, fenothiocarb, fenoxacrim, fenoxycarb, fenpirithrin, fenpropathrin, fenpyroximate, fenson, fensulfothion, fenthion, ethylfenthion, fentrifanil, fenvalerate, fipronil, flonicamid, fluacrypyrim, fluazuron, flubendiamide, flufenoxacrim (flubenzimine), flucofuron, flucycloxuron, flucythrinate, fluenetil, flufenerim, flufenoxuron, flufenprox, flumethrin, fluorbenside, fluvalinate, fonofos, formetanate, formothion, formparanate, fosmethilan, fospirate, fosthiazate, fosthietan, furathiocarb, furthrin, furfural, gamma cyhalothrin, gammaHCH, (halfenprox), halofenozide, HCH, HEOD, heptachlor, heptenophos, heterophos, hexaflumuron, hexythiazox, HHDN, hydramethylnon, hydrogen cyanide, hydroprene, hyquincarb, imidacloprid, imidacloprid Imiprothrin, indoxacarb, iodomethane, IPSP, isamidophos, isazofos, isozofos, isobenzan, isocarbophos, isodrin, isofenphos, isoprenaline, isoprenaline, isoprocarb, isoprenaline, isothioate, isoxathion, ivermectin jasmolin I, jasmolin II, jodfenphos, juvenile hormone IJuvenile hormone I, Juvenile hormone II, Juvenile hormone III, Kelevan, Kinoprene, Lambda-cyhalothrin, Lead arsenate, Lepimectin, Leptophos, Lindane, Lirimfos, Lufenuron, Lythidathion, Malathion, Malonoben, Mazidox, Mecarbam, Mecarphon, Menazon, Mephosfolan, Mercurous chloride, Mesulfen, Mesulfenfos, Metaflum izone, metam, methacrifos, methamidophos, methidathion, methicocarb, methochlor, methomyl, metoprene, methoxychlor, methoxyfenozide, methyl bromide, methyl isothiocyanate, methyl chloroform, dichloromethane, metofluthrin, metolcarb, metoxadiazone, mevinphos, mexacarbate, milbemectin, milbemycin oxime oxime, mipafox, mirex, MNAF, monocrotophos, morphothion, moxidectin, naftalofos, naled, naphthalene, nicotine, nifluridide, nikkomycins, nitenpyram, nithiazine, nitrilacarb, novaluron, noviflumuron, omethoate, oxamyl, oxydemetonmethyl), oxydeprofos, oxydisulfoton, parathion, methylparathion, penfluron, pentachlorophenol, permethrin, phenkapton, phenothrin, phenthoate, phorate, phosalone, phosfolan, phosmet, phosnichlor, phosphamidon, phosphine, phosphocarb, phoxim, methyl basafenone, pirimetaphos, pirimicarb, ethylpirimiphos, methylpirimiphos, potassium arsenite, potassium thiocyanate, pp' DDT, Prallethrin, Precocene I, Precocene II, Precocene III, Primidophos, Procolonol, Profenofos, Profluthrin, Promacyl, Promecarb, Propaphos, Proargite, Proetamphos, Prooxur, Prothidathion, Prothiofos, Prothoate, Protrifenbute, Pyraclofos, Pyrafluprole, Pyrazophos, Pyresmethrin, Pyrethrin I, Pyrethrin II, Pyridaben, Pyridalyl, and others. Pyridaphenthion, pyrifluquinazon, pyrimidifen, pyrimitate, pyriprole, pyriproxyfen, quassia, quinalphos, quinothion, methylquinothion, quinothion, rafoxanide, resmethrin, rotenone, ryania, sabadilla, schradan Selamectin, silafluofen, sodium arsenite, sodium fluoride, sodium hexafluorosilate, sodium thiocyanate, sophamide, spintoram, spinosad, spirodiclofen, spiromesifen, spirotetramat, sulcofuron, sulfiram, sulfluramid, sulfotep, sulfur, thiofluridine, sulprofos, taufen fluvalinate, tazimcarb, TDE, tebufenozide, tebufenpyrad, tebupirimfos, teflubenzuron, tefluthrin, temephos, TEPP, terallethrin, terbufos, tetrachlorvinphos, tetraradifon, tetramethrin, tetraactin, tetrasul, thetamethrincypermethrin, thiacloprid, thiamethoxam, thicrofos, thiocarboxime, thiocyclam, thiodicarb, thiofanox, thiometon, thionazin, thioquinox, thiosultap, thuringiensin, tolfenpyrad, tralomethrin, transfluthrin ), transpermethrin, triarathene, triazamate, triazophos, trichlorfon, trichlormetaphos, trichloronat, trifenofos, triflumuron, trimethacarb, triprene, vamidothion, vaniliprole, XMC, xylylcarb, zeta cypermethrin, and zolaprofos. Examples of fungicides include (but are not limited to) acibenzolar, acetylammic acid fungicides, acypetacs, aldimorph, aliphatic nitrogen-containing fungicides, allyl alcohol, acetylammic fungicides, ampropylfos, anilazine, aniline fungicides, antibiotic fungicides, aromatic fungicides, aureofungin, azaconazole, azithiram, azoxystrobin, barium polysulfide, benalaxyl, benalaxyl-M, benodanil, benomyl, bequinox, bentaluron, benthiavalicarb, and benzalkonium chloride. Chloride, benzamacril, benzylamine fungicide, benzamorf, benzylaniline fungicide, benzimidazole fungicide, benzimidazole precursor fungicide, benzimidazole carbamate fungicide, benzoxazin, benzimidazole fungicide, bethoxazin, binapacryl, biphenyl, bitertanol, bithionol, bixafen, blasticidin-S, Bordeaux mixture, boric acid, boscalid, bridged diphenyl fungicide, bromuconazole, bupirimate, Burgundy mixture (The following are listed as fungicides and their components: mixture), buthiobate, secondary butylamine, calcium polysulfide, captafol, captan, carbamorph, phenylcarbamate fungicides, carbendazim, carboxin, carpropamid, carvone, Cheshunt mixture, chinomethionat, chlobenthiazone, chloraniformethan, chloranil, chlorfenazole, chlorodinitronaphthalene, chloroform, chloroneb.)Chloropicrin, chlorothalonil, chlorquinox, chlozolinate, ciclopirox, climbazole, clotrimazole, conazole fungicides, imidazole, triazole, copper acetate (II), basic copper carbonate (II), copper fungicides, copper hydroxide, copper naphthenate, copper oleate, basic copper oxychloride, copper sulfate (II), basic copper sulfate, zinc copper chromate, cresol, cufraneb, cuprobam, cuprous oxide, cyazofamid, cyclafuramid, cyclic dithiocarbamate fungicides, cyclohexylimine, cyflufenamid, cyzofenamid moxanil, cypendazole, cyproconazole, cyprodinil, dazomet, DBCP, debacarb, decafenin, dehydroacetic acid, dimethylimide fungicide, dichlofluanid, dichlone, dichlorophen, dichlorobenzene, dichlozoline, diclobutrazol zol), dicloximet, diclomezine, dicloran, diethofencarb, diethyl pyrocarbonate, difenoconazole, diflumetorim, dimethirimol, dimethomorph, diimoxystrobin, diniconazole, diniconazole-M, dinitrophenol fungicide, d... Inobuton, Dinocap, Dinocap-4, Dinocap-6, Diocton, Dinopenton, Dinosulfon, Dinoterbon, Diphenylamine, Dipyrithione, Disulfiram, Ditalimfos, Dithianon, Dithiocarbamate fungicides, DNOC, Dodemorph, DodicinDodine, Donatodine, Drazoxolon, Edifenphos, Epixiconazole, Etaconazole, Etem, Ethaboxam, Ethirimol, Ethoxyquin, Ethylene oxide, 2,3-dihydroxypropylthiolsylmercuric acid, Ethylmercuric acetate, Ethylmercuric bromide, Ethylmercuric chloride, Ethylmercuric phosphate, Etridiazole, Famoxadone, Fenamidone, Dimethomorph Fenaminosulfonate, fenapanil, fenarimol, fenbuconazole, fenfuram, fenhexamid, finitropan, fenoxanil, fenpiclonil, fenpropidin, fenpropimorph, fentin, ferbam, ferimzone, fluazinam, fluconazole Ole), fludioxonil, flumetover, flumorph, fluopicolide, fluoroimide, fluotrimazole, fluoxastrobin, fluquinconazole, flusilazole, flusulfamide, flutolanil, flutriafol, fluxapyroxad, folpet Formaldehyde, Fosetyl, Fuberidazole, Furalaxyl, Furametpyr, Furcarbanil, Furconazole, Cis-Furfural, Furmecyclox, Furophanate, Glycodin, Griseofulvin, Guazatine, Halacrinate, Hexachlorobenzene, HexachlorobutadieneHexachlorophene, hexaconazole, hexylthiofos, hydrargaphen, hymexazol, imazalil, imibenconazole, iminoctadine, inorganic fungicides, inorganic mercury fungicides, iodomethyl, ipconazole, iprobenfos, iprodione, iprovalicarb, isopropanol, isoprothiolane, isovaledione, isopyrazam, kasugamycin, ketoconazole, kresoxim-methyl, lime sulfur / lime Sulphur), Mancopper, Mancozeb, Maneb, Mebenil, Mecarbinzid, Mepanipyrim, Mepronil, Mercuric chloride (outdated), Mercuric oxide (outdated), Mercurous chloride (outdated), Metalaxyl, Mefenoxam (also known as Mefenoxam), Metam, Metazoxolon, Metconazole, Metasulfocarb, Metfuroxam, Methyl bromide, Methyl mercuric benzoate, Methylmercuric dicyandiamide, Methylmercuric pentachlorophenol, Meti ram), metominostrobin, metrafenone, metsulfovax, milneb, morpholine fungicide, myclobutanil, myclozolin, N-(ethylmercury)-p-toluenesulfonamide, sodium mancozeb, natamycin, nystatin, β-nitrostyrene, nitrothal-isopropyl, nuarimol, OCH, octhilinone, ofofurace, opordione, organomercury fungicides, organophosphate fungicides, organotin fungicides (obsolete), o-phenylphenol,Orysastrobin, oxadixyl, oxoxadiene fungicide, oxazole fungicide, oxine copper, oxpoconazole, oxycarboxin, pefurazoate, penconazole, pencycuron, pentiopyrad, phenylmercuriurea, phenylmercury acetate Acetate), phenylmercuric chloride, phenylmercuric acid derivatives of catechol, phenylmercuric nitrate, phenylmercuric salicylate, phenylthioamine fungicide, phosdiphen, phosphite, phthalide, phthalimide fungicide, picoxystrobin, piperalin, polyurethane, polydithiocarbamate fungicide, polyoxins, polyoxorim, polysulfide fungicide, potassium azide, potassium polysulfide, potassium thiocyanate, probenazole, prochloraz, procymidone, propamocarb, propiconazole, propineb, proquinazid, prothiocarb, prothioconazole, pyracarbolid, pyraclost robin), pyrazole fungicide, pyrazophos, pyridinitril, pyrifenox, pyrimethanil, pyroquilon, pyroxychlor, pyroxyfur, pyrrolidinicide, quinacetol, quinazamid, quinazole onazole), quinoline fungicide, methyl methyl acaricide (quinomethionate), quinone fungicide, quinoline fungicide, quinoxyfen, quintozene, rabenzazole, salicylanilide, silthiofam, silver, simeconazole, sodium azide, sodium bicarbonate [2][3], sodium o-phenylphenol, sodium pentachlorophenol, sodium polysulfide,Spiroxamine, streptomycin, strobilurin fungicides, and sulfonanilide fungicides fungicides, sulfur, thiofluoride, sultropen, TCMTB, tebuconazole, tecloftalam, tecnazene, tecoram, tetraconazole, thiabendazole, thiadifluor, thiazole fungicide, thicyofen, thifluzamide, thymol, triforine, thiocarbamate fungicide, thiochlorfenphim, thiomersal, thiophanate, thiophanate-methyl, thioquinox fungicide, thiram, tiadinil, tioxymid, tivedo Tolclofos-methyl, tolnaftate, tolylfluanid, toluomeric acid, triadimefon, triadimenol, triamiphos, triarimol, triazbutil, triazine fungicides, triazole fungicides, triazoxide, tributyltin oxide, trihlamide, tricyclazole, triridemorph, trifloxystrobin, triflumizole, triforine, triticonazole, unclassified fungicides, undecanoic acid, uniconazole, uniconazole-P, urea fungicides, validamycin, valinamide fungicides fungicides, vinclozolin, voriconazole, zarilamid, zinc naphthenate, zineb, ziram, and / or zoxamide. In some embodiments, the compositions disclosed herein are products containing a pesticide / urease inhibitor composition comprising a pesticide and tributylhydroquinone (and additive components, if applicable). In some embodiments, the insecticide is a herbicide, an insecticide, or a combination thereof. The amount of the urease inhibitor composition in the product containing the pesticide / urease inhibitor composition may vary. In some embodiments, the urease inhibitor composition is present in an amount of about 0.05% to about 10% by weight (more preferably about 0.1% to about 4% by weight, and most preferably about 0.2% to about 2% by weight) based on the total weight of the product containing the pesticide / urease inhibitor composition (considered as 100 wt%). Exemplary categories of acaricides include (but are not limited to) plant acaricides, bridging diphenyl acaricides, carbamate acaricides, oxime carbamate acaricides, hydrazine carbamate acaricides, dinitrophenol acaricides, formamid acaricides, and isoprene. Isoxaline acaricides, macrocyclic lactone acaricides, avermectin acaricides, milbemycin acaricides, milbemycin acaricides, mite growth regulators, organochlorine acaricides, organophosphate acaricides, organothiophosphate acaricides, phosphonate acaricides, phosphatidyl mercaptan acaricides, organotin acaricides, phenylsulfonamide acaricides, pyrethroid acaricides, quaternary ammonium acaricides, pyrethroid acaricides, pyrrole acaricides, quinoline acaricides, methoxyacrylate phorate acaricides, tetronic acid acaricides, tetrahydrothiazole acaricides, thiocarbamate acaricides, thiourea acaricides, and unclassified acaricides. Examples of such acaricides include, but are not limited to, plant-based acaricides such as carvacrol and sanguinarine; bridging diphenyl acaricides such as azobenzene, benzoyl peroxide, benzyl methyl, benzoate, bromopropylate, chlorpyrifos, dicofol, dicofol, difenoconazole, ethyl dicofol, propyl dicofol, diflubenzuron, DDT, chlorpyrifos, diphenyl methyl sulfide, fenoxypropyne, dicofol, fluoromethyl, flufenoxuron, genit, hexachlorophene, phenproxide, propanol, and tetrachlorfon. Good for killing mites; Carbamate acaricides - Mifepristone, Chlorfenapyr, Carbamate, Mifepristone, Mifepristone, Mifepristone, Mifepristone, Ammonium oxychloride; Oxime carbamate acaricides - Demeton-methyl, Butyl ketone carbamate, Oxychlorpyrifos, Insecticidal carbamate, Dimethoate; Hydrazine carbamate acaricide - Bifenthrin; Dinitrophenol acaricides - Acaricide, Acaricide, Dictamnus, Pyrophoric acid, Pyrophoric acid-4, Pyrophoric acid-6, Ordimethalin, Amyl nitrate, Oxyl nitrate, Nitrobutyl nitrate, DNOC; Amitraz acaricides - Amitraz, Amitraz, Amitraz, Amitraz, Amitraz, Amitraz, Amitraz; Isomethyl Acaricides: afoxolaner, fluralaner, lotilaner, saralaner; Macrocyclic lactone acaricides: dicofol; Abamectin acaricides: abamectin, doramectin, irimethonol, ivermectin, selamectin; Milbemycin acaricides: mimethin, milbemycin, oxime, moxicillin; Mite growth regulators: ceftriaxone, cyproconazole, flufenoxuron, phenoxyacetate, pyridaben, flufenoxuron, flufenoxuron, cyproconazole; Organochlorine acaricides: bromoxynil, toxaphene, DDT, chlorfenapyr, acetamiprid. Fosetyl-methyl, chlorpyrifos; organophosphate acaricides - chlorpyrifos, phosmet, dichlorvos, heptamethrin, chlorpyrifos, chlorpyrifos, dibromophos, TEPP, chlorpyrifos; organothiophosphate acaricides - chlorpyrifos, chlorpyrifos, ethyl phosmet, methyl phosmet, azophos, phenylphosphine, chlorpyrifos, ethyl phosmet, trithion, chlorpyrifos, chlorpyrifos, chlorpyrifos, chlorpyrifos, chlorpyrifos-O, chlorpyrifos-S, methyl chlorpyrifos, chlorpyrifos-O-methyl, chlorpyrifos-S-methyl, chlorpyrifos-S-methanesulfonic acid, chlorpyrifos, chlorpyrifos, dichlorvo ...-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-S-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O-methyl, chlorpyrifos-O Aphid phosmet, chlorpyrifos, omethoate, isophosphorus, phorate, parathion, fenthion, fenpyroxene, fenpyroxene, fenpyroxene, triphosphamidon, basafenone, methyl methazine, ethiophanate-methyl, pyrimethanil, quinoxal, quintiofos, thiophanate-methyl, methyl phorate, trichlorfon, trichloropropoxyphos, fenmethazine; phosphonate ester acaricides - trichlorfon; thiophosphamidon acaricides - methamidophos, dammarone, bamectin; phosphamidon acaricides - methylflufenoxam, fenpyroxene, octamethrin; organotin acaricides - triazophos, fenpyroxene, fenpyroxene, triphosphamidon; phenylthionine acaricide - fenpyroxene; phthalimide acaricides Acaricides - Chlorpyrifos, Emetrazine; Pyrazole acaricides - Cyprodinil, Fentrol; Phenylephrine acaricides - Ethylaminophen, Feprani, Vanipron; Pyrazole methyl acaricides - Pyflubumide, Defenray; Pyrethroid acaricides - Ananine, Bifenthrin, Brofluthrinate, Cyprodinil, Alpha-Cyprodinil, Fentrol, Fentrol, Husine, Flufenoxuron, Fuhuali, T-Fuhuali, Baifening; Pyrethroid acaricides - Benfenether; Aminopyrimidine acaricides - Pyrimethanil; Pyrrole acaricides - Kefalazine; Quaternary ammonium acaricides - Sanguisorbine; Quinine Phosphate-based acaricides - Mancozeb, Acaricide; Methoxyacrylate-based acaricides - Bifujunzhi, Pyrimethanil, Flufenoxystrobin, Pyriminostrobin; Sulfite-based acaricides - Acaricide, Acaricide; Tebufen-based acaricide - Tebufen; Tetraphos Acaricides: Clofenac, Flufenoxam; Thiazolidine acaricides: Flufenoxam, Hesperidone; Thiocarbamate acaricides: Benthiocarbamate; Thiourea acaricides: Diflubenzuron, Tefenoxam; Unclassified acaricides: Iquinoline, Acenopyr, Ammonium oxychloride, Arsenic oxide, Clenbuterol, Chlorpyrifos, Clomidon, Cyclomethrin, Acaricide, Disulfiram, Ethiamethoxam, Antipyrethroid, Fenmethoxam, Bifenthion, Methionine, MNAF, Flufenoxam, Huaguangmycin, Bidabane, Sufil, Flufenoxam, Thiophanate-methyl, Thiamethoxam, Brucinoxam, Brucinoxam, Fipronil, Thiophanate-methyl, Brucinoxam, Benthiocarbamate. In some embodiments, the acaricide may also be selected from abamectin, oxadiazon, tebufenozide, acetamiprid, methamidophos, pyrethroids, aluminum phosphide, methomyl, triazophos, azadiractin, ethyl phosphonate, methyl phosphonate, and Bacillus thuringiensis. thuringiensis), cypermethrin, β-cyfluthrin, bisfenoxam, bisfenoxam, bomyl, ibuprofen, calcium cyanide, cypermethrin, cypermethrin, carbon disulfide, carbon tetrachloride, chlorfenapyr, ethyl ester dicofol, chloropicrin, chlorpyrifos, chlorfenapyr, chlorfenapyr, chlorfenapyr, chlorfenapyr + dichlorvos, cryolite, cyfluthrin, cypermethrin, cypermethrin, DEET, dimethoate, chlorpyrifos, dichloropropene, dichlorvos, chlorfenapyr, dichlorvos, dichlorvos, dimethoate, dichlorvos ... Antrol, Efflur, Acetonide, Mefenoxam, Ethylene dibromide, Ethylene dichloride, Ethylene dichloride, Ethylene dichloride, Valmethoxam, Pyridaben, Fenoxam, Fenprofen, Fenfoss, Fensulfuron-methyl, Flupyrazole, Husine, Fuhuali, Dichlorvos, Hydrochloric acid fenpyroxene, γ-Cyrrolidine, Hefenuron, Hexakis, Hesperidin, Emetone, Quicklime, Index, Edamame, Kerosene, Acetylpyridinium, λ-Cyrrolidine, Lead arsenate, Lingdan, Marathon, Dimethoate, Metaldehyde, Sodium thiocyanate, Damathion, Metazon, Metazon, Nanade, Metazon, Metazon, Metazon, Methyl bromide, Methylparaben, Mefenoxam, Zikva, Milky spores Disease Spore), dibromophos, naphthalene, nicotine sulfate, novaron, oxychloride, methyl methomyl, fenpyroxene, paradichlorobenzene, parathion, PCP, fenpyroxene, petroleum, fenpyroxene, thiocyclophosphamide, fenpyroxene, fenpyroxene, fenpyroxene, piperonyl butoxide, piperazine, methyl methazine, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, fenpyroxene, s-methoxyfenozide, pesticide soap, (The following are listed as unrelated terms and phrases: pesticidal, sodium fluoride, chlorpyrifos, spirodiclofen, phosmet, thiophanate-methyl, abamectin, tofmethrin, loratadine, loratadine + dichlorvos, tetrachlorfon, thiamethoxam, thiophanate-methyl, toxaphene, tylosin, chlorpyrifos and chlorfenapyr). IV. In some embodiments, the method directly uses the urease inhibitor composition. In other embodiments, the urease inhibitor composition is formulated in a manner that facilitates its use in productive agricultural settings. The urease inhibitor composition used in these methods includes tributylhydroquinone as described above, an organic solvent, and additive components, if applicable. The urease inhibitor composition can be used in methods such as: A. methods for improving plant growth and / or plant health and / or soil fertilization; B. methods for inhibiting urease activity; C. methods for inhibiting ammonia release or precipitation; D. methods for improving soil conditions; E. methods for preparing the urease inhibitor composition. A. A method for improving plant growth includes contacting a urease inhibitor composition containing tertiary butylhydroquinone as disclosed herein, an organic solvent, and, where applicable, additive components with soil. In some embodiments, the urease inhibitor composition is applied to the soil prior to the germination of the planted crop. In some embodiments, the urease inhibitor composition is applied to the soil adjacent to the plant and / or to the base of the plant and / or the root zone of the plant. Methods for improving plant growth can also be achieved by coating seeds with a urease inhibitor composition containing tributylhydroquinone (and additive components, if applicable) as a seed coating in the form of a liquid dispersion, the liquid dispersion forming a dried residue upon drying. In these embodiments, the seed coating provides tributylhydroquinone (and additive components, if applicable) very similar to the seed at planting time, allowing the tributylhydroquinone to exert its beneficial effects in the environment where it is most needed. That is, the tributylhydroquinone (and additive components, if applicable) provides an environment conducive to enhanced plant growth in an area around the desired plant. In the case of seeds, the coating containing tributylhydroquinone (and additive components, if applicable) provides an enhanced opportunity for seed germination, subsequent plant growth, and increased plant nutrient utilization. B. A method for inhibiting / reducing urease activity, comprising applying a urease inhibitor composition containing tributylhydroquinone (and, where applicable, additive components) to the soil. In some embodiments, the urease inhibitor composition is applied to the soil prior to the germination of the planted crop. In some embodiments, the urease inhibitor composition is applied to the soil adjacent to the plant and / or to the base of the plant and / or the root zone of the plant. C. Methods for inhibiting / reducing ammonia release or precipitation in the affected area include applying a urease inhibitor composition containing tributylhydroquinone (and, where applicable, additive components) to the affected area. The affected area may be soil, fields, pasture, livestock or poultry restraints, pet bedding, manure collection areas, vertical walls forming a fence, or a canopy substantially covering the area, and in such cases, the urease inhibitor may be applied directly to the manure in the collection area. The urease inhibitor component is preferably applied at a rate of about 0.005 to about 3 gallons per metric tonne of manure in the form of an aqueous dispersion with a pH of about 1 to about 5. D. A method for improving soil conditions selected from a group of factors including nitrification processes, urease activity, and their combinations, comprising the step of applying an effective amount of the described tBHQ-containing urease inhibitor composition to the soil. In some embodiments, the urease inhibitor composition is mixed with a solid, liquid, or gaseous urea-containing fertilizer, particularly a solid fertilizer; in the latter case, the urease inhibitor composition is applied as an aqueous dispersion to the surface of the (urea-containing) fertilizer, followed by drying, such that the urease inhibitor composition remains on the solid fertilizer as a dry residue. The urease inhibitor composition is generally applied at a level of about 0.01% to about 10% by weight, based on the total weight of the urease inhibitor composition / fertilizer product, which is considered to be 100% by weight. When the fertilizer is an aqueous liquid fertilizer, the urease inhibitor composition is added thereto during mixing. E. A method for preparing a urease inhibitor composition, comprising contacting tributylhydroquinone with one or more organic solvents to form a mixture. In some embodiments, an additive component is added to the formed mixture. In some embodiments, methods A, B, and D above involve contacting the desired area with the urease inhibitor composition at a ratio of about 100 g to about 120 g of the urease inhibitor composition per acre. In some embodiments, the urease inhibitor composition may be present in solution at an amount of about 0.5 lb to about 4 lb / US gallon, or about 1 lb to about 3 lb / US gallon, or about 2 lb / US gallon. In some embodiments, the method includes contacting the desired area at a ratio of about 0.5 to about 4 qt / A or about 1 to about 2 qt / A. Specific embodiments of the subject matter described herein include: 1. A method for inhibiting urease activity, the method comprising applying a urease inhibitor composition to the soil, wherein the urease inhibitor composition comprises: tributylhydroquinone; and an organic solvent. 2. The method of Example 1, wherein the amount of tributylhydroquinone in the composition is from about 0.1% to about 65% by weight of the total composition. 3. The method of Example 1 or 2, wherein the organic solvent is selected from urethane, aromatic solvents, green solvents, safe solvents, and combinations thereof. 4. The method of any of the above examples, wherein the organic solvent comprises dimethyl urethane. 5. The composition of any of the above examples, wherein the organic solvent comprises dimethyl urethane and xylene. 6. The method of Example 5, wherein dimethyl urethane and xylene are present in a weight ratio of about 1:2 to about 2:1. 7. The method of any of the above examples, wherein the urease inhibitor composition further comprises an additive component. 8. The method of Example 7, wherein the additive component is selected from additives containing an α,β-unsaturated carbonyl system, acid-containing additives, ester-containing additives, aromatic additives, ethylene glycol-containing additives, and combinations thereof. 9. The method of Example 8, wherein the additive component is an additive containing an α,β-unsaturated carbonyl system, selected from citral, isopropyl acetone, α-pentylcinnamaldehyde, coumarin, and combinations thereof. 10. The method of Example 8, wherein the additive component is an aromatic additive, selected from butylated hydroxyanisole, eugenol, salicylaldehyde, acetophenone, methyl salicylate, and combinations thereof. 11. The method of Example 8, wherein the additive component is an acid-containing additive, selected from itconic acid, adipic acid, maleic acid, octanoic acid, ethyl maltol, ascorbic acid, acetopropionic acid, and combinations thereof. 12. The method of Example 8, wherein the additive component is an ester-containing additive selected from triethyl citrate, isobornyl acetate, propylene carbonate, ethyl lactate, and combinations thereof. 13. The method of Example 8, wherein the additive component is an ethylene glycol-containing additive selected from diethylene glycol monoethyl ether, ethylene glycol, monobutyl ether, and combinations thereof. 14. The method of any one of Examples 7 to 13 above, wherein tert-butylhydroquinone and the additive component are present in a weight ratio of about 1:10 to about 10:1. 15. The method of any one of Examples 7 to 14, wherein the additive component is present in an amount of about 1% to about 50% by weight, based on the total weight of the composition. 16. The method of any one or more examples, wherein the urease inhibitor composition further comprises a surfactant, a dispersant, an emulsifier, an antifoaming agent, a stabilizer, or a combination thereof. 17. The method of any one or more examples, wherein at least about 50% of urease activity is inhibited.18. A method for fertilizing soil and / or improving plant growth and / or health, comprising contacting a urease inhibitor composition with the soil, wherein the urease inhibitor composition comprises: tributylhydroquinone; and an organic solvent. 19. The method of Example 18, wherein the amount of tributylhydroquinone in the composition is from about 0.1% by weight to about 65% by weight, based on the total weight of the composition. 20. The method of Example 18, wherein the organic solvent is selected from urethane, aromatic solvents, green solvents, safe solvents, and combinations thereof. 21. The method of Example 18, wherein the organic solvent comprises dimethyl urethane. 22. The method of Example 18, wherein the organic solvent comprises dimethyl urethane and xylene. 23. The method of Example 22, wherein dimethyl urethane and xylene are present in a weight ratio of about 1:2 to about 2:1. 24. The method of any one of Examples 18 to 23, wherein the urease inhibitor composition further comprises an additive component. 25. The method of Example 24, wherein the additive component is selected from additives containing an α,β-unsaturated carbonyl system, acid-containing additives, ester-containing additives, aromatic additives, and ethylene glycol-containing additives. 26. The method of Example 25, wherein the additive component is an additive containing an α,β-unsaturated carbonyl system, selected from citral, isopropyl acetone, α-pentylcinnamaldehyde, coumarin, and combinations thereof. 27. The method of Example 25, wherein the additive component is an aromatic additive, selected from butylated hydroxyanisole, eugenol, salicylaldehyde, acetophenone, methyl salicylate, and combinations thereof. 28. The method of Example 25, wherein the additive component is an acid-containing additive, selected from itaconic acid, adipic acid, maleic acid, octanoic acid, ethyl maltol, ascorbic acid, acetopropionic acid, and combinations thereof. 29. The method of Example 25, wherein the additive component is an ester-containing additive selected from triethyl citrate, isobornyl acetate, propylene carbonate, ethyl lactate, and combinations thereof. 30. The method of Example 25, wherein the additive component is an ethylene glycol-containing additive selected from diethylene glycol monoethyl ether, ethylene glycol, monobutyl ether, and combinations thereof. 31. The method of any one of Examples 24 to 30, wherein tert-butylhydroquinone and the additive component are present in a weight ratio of about 1:10 to about 10:1. 32. The method of any one of Examples 24 to 31, wherein the additive component is present in an amount of about 1% to about 50% by weight, based on the total weight of the composition. 33. The method of any one of Examples 24 to 32, wherein the urease inhibitor composition further comprises a surfactant, a dispersant, an emulsifier, an antifoaming agent, a stabilizer, or a combination thereof.34. An agricultural composition comprising: a urease inhibitor composition; and a solid urea-containing fertilizer, wherein the urease inhibitor composition comprises tributylhydroquinone; and an organic solvent, wherein the surface of the urea-containing fertilizer is coated with the urease inhibitor composition. 35. The agricultural composition of Example 34, wherein the solid urea-containing fertilizer is in granular or pellet form. 36. The agricultural composition of Example 35, wherein the average particle size (d50) of the solid urea-containing fertilizer particles is in the range of about 0.5 to about 2.5 mm. 37. The agricultural composition of Example 35, wherein the sieve aperture size of the urea-containing fertilizer particles is in the range of about 16 sieve apertures to about 100 US sieve apertures. 38. The agricultural composition of Example 34, wherein the urease inhibitor composition is present in an amount of about 0.001% by weight to about 10% by weight, based on the total weight of the agricultural composition. 39. The agricultural composition of Example 34, wherein the amount of tert-butylhydroquinone in the composition is from about 0.1% to about 99.9%. 40. The agricultural composition of Example 34, wherein the organic solvent is selected from uranium, aromatic solvents, green solvents, safe solvents, and combinations thereof. 41. The agricultural composition of Example 34, wherein the organic solvent comprises dimethyl urethane. 42. The agricultural composition of Example 34, wherein the organic solvent comprises dimethyl urethane and xylene. 43. The agricultural composition of Example 42, wherein dimethyl urethane and xylene are present in a weight ratio of about 1:2 to about 2:1. 44. The agricultural composition of any one of Examples 34 to 43, wherein the urease inhibitor composition further comprises an additive component. 45. The agricultural composition of Example 44, wherein the additive component is selected from additives containing α,β-unsaturated carbonyl systems, acid-containing additives, ester-containing additives, aromatic additives, and ethylene glycol-containing additives. 46. ​​The agricultural composition of Example 44, wherein the additive component is an additive containing an α,β-unsaturated carbonyl system, selected from citral, isopropyl acetone, α-pentylcinnamaldehyde, coumarin, and combinations thereof. 47. The agricultural composition of Example 44, wherein the additive component is an aromatic additive, selected from butylated hydroxyanisole, eugenol, salicylaldehyde, acetophenone, methyl salicylate, and combinations thereof. 48. The agricultural composition of Example 44, wherein the additive component is an acid-containing additive, selected from itaconic acid, adipic acid, maleic acid, octanoic acid, ethyl maltol, ascorbic acid, acetopropionic acid, and combinations thereof. 49. The agricultural composition of Example 44, wherein the additive component is an ester-containing additive, selected from triethyl citrate, isobornyl acetate, propylene carbonate, ethyl lactate, and combinations thereof. 50. The agricultural composition of Example 44, wherein the additive component is an ethylene glycol-containing additive selected from diethylene glycol monoethyl ether, ethylene glycol, monobutyl ether, and combinations thereof.51. An agricultural composition of any one of Examples 44 to 50, wherein the tributylhydroquinone and the additive component are present in a weight ratio of about 1:10 to about 10:1. 52. An agricultural composition of any one of Examples 44 to 51, wherein the additive component is present in an amount of about 1% to about 50% by weight of the total weight of the composition. 53. An agricultural composition of any one of Examples 44 to 52, wherein the urease inhibitor composition further comprises a surfactant, a dispersant, an emulsifier, an antifoaming agent, a stabilizer, or a combination thereof. 54. A method for preparing an agricultural composition of Example 34, the method comprising applying a urease inhibitor composition in liquid or dispersion form to the surface of a solid urea-containing fertilizer, thereby coating the solid urea-containing fertilizer, wherein the urease inhibitor composition comprises: tributylhydroquinone; and an organic solvent. 55. The method of Example 54, wherein the solid urea-containing fertilizer is in granular or pellet form. 56. The method of Example 55, wherein the average particle size (d50) of the solid urea-containing fertilizer granules is in the range of about 0.5 to about 2.5 mm. 57. The method of Example 55, wherein the sieve aperture size of the urea-containing fertilizer granules is in the range of about 16 sieve apertures to about 100 US sieve apertures. 58. The method of Example 54, wherein the urease inhibitor composition is applied in an amount of about 0.001% by weight to about 10% by weight, based on the total weight of the agricultural composition. 59. The method of Example 54, wherein the amount of tributylhydroquinone in the composition is about 0.1% by weight to about 99.9% by weight, based on the total weight of the composition. 60. The method of Example 54, wherein the organic solvent is selected from urethane, aromatic solvents, green solvents, safe solvents, and combinations thereof. 61. The method of Example 60, wherein the organic solvent comprises dimethyl urethane. 62. The method of Example 61, wherein the organic solvent comprises dimethyl sulfoxide and xylene. 63. The method of Example 62, wherein the dimethyl sulfoxide and xylene are present in a weight ratio of about 1:2 to about 2:1. 64. The method of any one of Examples 54 to 63, wherein the urease inhibitor composition further comprises an additive component. 65. The method of Example 64, wherein the additive component is selected from additives containing an α,β-unsaturated carbonyl system, acid-containing additives, ester-containing additives, aromatic additives, and ethylene glycol-containing additives. 66. The method of Example 65, wherein the additive component is an additive containing an α,β-unsaturated carbonyl system, selected from citral, isopropyl acetone, α-pentylcinnamaldehyde, coumarin, and combinations thereof. 67. The method of Example 65, wherein the additive component is an aromatic additive, selected from butylated hydroxyanisole, eugenol, salicylaldehyde, acetophenone, methyl salicylate, and combinations thereof.68. The method of Example 65, wherein the additive component is an acid-containing additive selected from itaconic acid, adipic acid, maleic acid, octanoic acid, ethyl maltol, ascorbic acid, acetylpropionic acid, and combinations thereof. 69. The method of Example 65, wherein the additive component is an ester-containing additive selected from triethyl citrate, isobornyl acetate, propylene carbonate, ethyl lactate, and combinations thereof. 70. The method of Example 65, wherein the additive component is an ethylene glycol-containing additive selected from diethylene glycol monoethyl ether, ethylene glycol, monobutyl ether, and combinations thereof. 71. The method of any one of Examples 64 to 70, wherein tert-butylhydroquinone and the additive component are present in a weight ratio of about 1:10 to about 10:1. 72. The method of any one of Examples 64 to 71, wherein the additive component is present in an amount of about 1% by weight to about 50% by weight, based on the total weight of the composition. 73. The method of any one of Examples 64 to 72, wherein the urease inhibitor composition further comprises a surfactant, a dispersant, an emulsifier, an antifoaming agent, a stabilizer, or a combination thereof. 74. A urease inhibitor composition comprising: tert-butylhydroquinone; an additive selected from additives containing an α,β-unsaturated carbonyl system, acid-containing additives, ester-containing additives, aromatic additives, and ethylene glycol-containing additives; and an organic solvent, wherein the tert-butylhydroquinone and the additive component are present in a synergistic amount. 75. The composition of Example 74, wherein the tert-butylhydroquinone is present in an amount from about 0.1% by weight to about 65% by weight, based on the total weight of the composition. 76. The composition of Example 74, wherein the additive is present in an amount from about 1% by weight to about 50% by weight, based on the total weight of the composition. 77. A composition of any one of Examples 74 to 76, wherein tert-butylhydroquinone and the additive component are present in a weight ratio of about 1:10 to about 10:1. 78. A composition of any one of Examples 74 to 77, wherein the organic solvent is selected from sulfoxides, aromatic solvents, green solvents, safe solvents, and combinations thereof. 79. A composition of any one of Examples 74 to 78, wherein the organic solvent comprises dimethyl sulfoxide. 80. A composition of Example 79, wherein the organic solvent comprises dimethyl sulfoxide and xylene. 81. A composition of Example 80, wherein dimethyl sulfoxide and xylene are present in a weight ratio of about 1:2 to about 2:1. 82. A composition of any one of Examples 74 to 81, wherein the additive component is selected from additives containing α,β-unsaturated carbonyl systems, acid-containing additives, ester-containing additives, aromatic additives, ethylene glycol-containing additives, and combinations thereof. 83. The composition of Example 82, wherein the additive component is an additive containing an α,β-unsaturated carbonyl system selected from citral, isopropyl acetone, α-pentylcinnamaldehyde, coumarin, and combinations thereof.84. The composition of Example 82, wherein the additive component is an aromatic additive selected from butylated hydroxyanisole, eugenol, salicylaldehyde, acetophenone, methyl salicylate, and combinations thereof. 85. The composition of Example 82, wherein the additive component is an acidic additive selected from itaconic acid, adipic acid, maleic acid, caprylic acid, ethyl maltol, ascorbic acid, acetopropionic acid, and combinations thereof. 86. The composition of Example 82, wherein the additive component is an ester-containing additive selected from triethyl citrate, isobornyl acetate, propylene carbonate, ethyl lactate, and combinations thereof. 87. The composition of Example 82, wherein the additive component is an ethylene glycol-containing additive selected from diethylene glycol monoethyl ether, ethylene glycol, monobutyl ether, and combinations thereof. 88. The composition of any one of Examples 74 to 87, wherein the urease inhibitor composition further comprises a surfactant, dispersant, emulsifier, defoamer, stabilizer, or a combination thereof. 89. The composition of any of Examples 74 to 88, wherein at least about 50% of urease activity is inhibited. V. It should be understood that the following examples are provided for illustrative purposes only and none of them should be considered limiting. Example 1 Screening and evaluation of tertiary butylhydroquinone (tBHQ) as an additive component in urease inhibitor compositions. A variety of potential urease inhibitor (UI) compounds were screened as potential additive components. Examples include (to name only) phosphonic acids, catechol, hydroquinone, triazoles, coumarins, α-hydroxy ketones, oximes, protocatechuic acid, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), phosphatidylamine, and various groups of certain thiolated compounds. tBHQ was selected as the primary urease inhibitor due to its initial potency, availability, and safety profile. Several different modes of action (MOA) were proposed as the primary modes of action for UI compounds, such as, but not limited to, Ni(II) binding and moving flap folding. These studies further investigated the efficacy of higher levels (>10 quarts / metric ton) of tBHQ and selected additives in the field, to achieve ratios compatible with commercially available products, i.e., in the 3 quarts / metric ton range. Synergistic additives and safer, more environmentally friendly solvents were identified, all commercially available in metric ton (and higher) grades. A. Materials and Solutions: tBHQ (the main active ingredient (AI)), solvents, and additives (co-activators) were obtained from commercial suppliers. A Draeger tube protocol was developed, and soil from the NCSU Ag research facility in Oxford, North Carolina, was used. Samples were prepared by rolling them on a sample roller at ambient temperature for 2–4 hours to co-dissolve them in a suitable solvent, and then allowing them to stand over the weekend to ensure no turbidity and / or precipitation occurred. Typical sample sizes were 4–4.5 g in 12 mL cylindrical glass vials. These clear (sometimes light pink) solutions were applied to urea pellets at 3 quarts / metric tonnes (L, indicating a low ratio) and 6 quarts / metric tonnes (H, indicating a high ratio), respectively. Readings were plotted, with time as the independent variable, and NH4+ was recorded on the y-axis. 3 (on a linear Dreg scale) to produce an output that is generally "S"-shaped. UTC and urea controls, as well as formulation A (Agrotain®) and formulation B (tBHQ in an organic solvent), are included in all rounds. Samples are stored under ambient conditions for 6 months (or 12 months) to observe for any precipitation, thickening, or turbidity. B. Results and Discussion: The following candidates are tBHQ+\ [x co-activator + y solvent], where x and y are variable. Results from numerous rounds of evaluation were obtained and are discussed in more detail below. Evaluation data for approximately 70 candidates are presented, including candidate number (i.e., UI#), chemical name, and CAS number. Generally, when a candidate's graph is closer to the x-axis (indicating lower volatility), the candidate shows good performance. Solid lines represent low ratios and dashed lines represent high ratios; except for Agrotain® (formulation A) and formulation B, UTC is always closest to the x-axis, and the urea control is usually the leftmost line in the graph. Most experiments require 2 weeks to complete, while some experiments for better candidates require 3 (or 4) weeks. A longer period of inhibited volatility is a good indicator of expected superior performance. No. 1 Wheel: Evaluate the following compounds: result: surface 2 No. 2 Wheel: Evaluate the following compounds: result: surface 3 No. 3 Wheel: Evaluate the following compounds result: surface 4 No. 4 Wheel: Evaluate the following compounds: Results / Notes surface 5 No. 5 The following compounds were evaluated in rounds: result: surface 6 No. 6 The following compounds were evaluated in a round: result: surface 7 : No. 7 The following compounds were evaluated in a round: Results / Notes: surface 8 No. 8 The following compounds were evaluated in a round: result: surface 9 No. 9 The following compounds were evaluated in a round: result: surface 10 No. 10 The following compounds were evaluated in a round: result: surface 11 No. 11 The following compounds were evaluated in a round: result: surface 12 No. 12 The following compounds were evaluated in a round: result: surface 13 Example 2 Biometric type volatiles study: The objective of this study was to compare the NH3 levels in soils fertilized with urea under different treatments. 3. Volatile content. 1. Materials and Methods 1.1. Ammonia volatilization experiments were conducted in the laboratory to compare the rate and cumulative amount of ammonia volatilization. Soil samples (sandy loam) were taken, dried at 40°C, and ground to pass through a 2 mm mesh sieve. To characterize the soil, different physicochemical properties were measured (Table 14): exchangeable bases (Ca... +2 K + Mg +2 Na +(Haby et al., 1990), cation exchange capacity (CEC) (Chapman, 1965), soil organic matter (SOM) (Walkley & Black, 1934), pH (1:2.5 soil to water), initial ammonium and nitrate content (Bremner & Keeney, 1965), and soil texture (Bouyoucos, 1963). To determine the bulk density of 2 mm samples, soil was filled into 1 L containers and weighed. surface 14. Physiological and chemical characteristics of the soil used in the cultivation experiment. The experiment consisted of 80 experimental units, each comprised of a 1.3 L container (diffusion chamber). 800 g of soil sample was weighed into each container. Half of the soil was mixed with reagent-grade micronized CaCO3. 3. Mix thoroughly to increase its alkali saturation from 57% to 70% (CaCO3). The ratio 3 is equivalent to 1.6 Mg ha -1 Moisten the soil in all containers with demineralized water to increase its water content to 70% of its water-holding capacity. Gradually apply water using a spray bottle while mixing the soil to ensure even wetting. Seal the diffusion chamber airtight and maintain it in an incubator at 25°C for 10 days. During the pre-incubation period, open the chamber every two days to prevent oxygen deprivation. Following pre-cultivation, the fertilization treatments described in Table 15 were applied, with each treatment repeated four times. For this purpose, the fertilization treatments received 1500 mg N kg. -1 Apply the urea solution in a specific ratio. Apply the fertilizer evenly to the soil surface. surface 15. N-fertilizer treatments and their identification names 20 ml of 1N NaOH (i.e., NH4OH) 50 ml plastic containers (3 traps) were placed inside each experimental unit. These traps were placed on a plastic tripod to allow gas exchange across all soil surfaces. The diffusion chambers were hermetically sealed and randomly placed in an incubator at 25°C. The traps were replaced at different sampling times (1, 2, 3, 4, 5, 7, 9, 11, 15, 19, 23, and 30 days after fertilizer application). The extracted traps were immediately capped and stored at 4°C until they reached their target concentration for NH4+. 4 +Analysis was performed (less than 3 hours after the trap was replaced). NH3 in the trap was analyzed by micro-steam distillation (Bremner and Keeney, 1965). 4 + Concentration determination. Because none of the fertilization treatments showed NH3 levels equal to or lower than T2 (control) after day 11. 3. Volatility value, therefore data were collected for all treatments throughout the 30-day incubation period. After the experiment, the soil was dried at 40°C and ground to pass through a 2-mm sieve. Subsequently, the soil pH (1:2.5 soil-to-water ratio) and N-NH4+ in these soil samples were determined. 4 + and N-NO 3 - Concentration (Bremner and Keeney, 1965). 1.2. The experimental design for data analysis was a randomized block design (DBC) with two factors (fertilization treatment and lime treatment). Analysis of variance was used to analyze the results to determine differences between treatments. Subsequently, the Tukey test was used to compare treatment means (p < 0.05). Ammonia volatilization results were compared in two different ways. First, the ammonia volatilization rate at each time point was compared. This volatilization rate was calculated as: N-NH3 in the trap at time X. The quantity of 3 is divided by the time (d) elapsed between time X and time X-1. Secondly, by subsequently adding N-NH4+ at each experimental unit... The cumulative N of evaporation at each moment is calculated by adding the amount of 3 to the time. To determine the proportion of N recovered from the fertilizer in the form of mineral N or volatile N at the end of the experiment, the following N balance was performed: Since the N derived from mineralization in the fertilization treatment could not be identified without isotopic dilution analysis, the N mineralization obtained in the control treatment (T2) was used in all other treatments. Therefore, by using the same mineralization results in all treatments, no initiation effect was observed in the fertilization treatment. 2. Results and Discussion 2.1. Cultivation 30 The soil minerals of the Queen N-NH in the soil after the N cultivation period 4 + The concentration was not affected by lime treatment (Table 16). However, compared to T2 (control), N-NH3 concentrations were significantly higher under fertilizer application. 4 + Concentration increased. Among the fertilization treatments, only T7 and T10 showed N-NH4+. 4 + The concentrations are different because the latter has N-NH 4 + The concentration is 14% higher than that of T7. Treatment with lime resulted in higher levels of N-NO compared to treatment without lime. 3-concentrations (104.6 and 87.6 mg kg, respectively) -1 (Table 16). However, this difference is not reflected in the total mineral N, which is due to N-NO. 3 - The fertilization treatment represents only 11% of mineral N. Compared to T2, the N-NO in the fertilization treatment... 3 - The concentrations were generally high (+59%), and except for T9 and T10, there was no difference between these and the control treatment. surface 16. Measure N-NH at the end of the cultivation experiment. 4 + N-NO 3 - and mineral N (N-NH 4 + + N-NO 3 - (mg kg) -1 The results of the analysis of variance. N-NH in soil of T2 after 30 days of cultivation 4 + The concentration was 45 times lower than at the initial period (Table 13, Figure 1). Conversely, the N-NO concentration of T2 was higher during the incubation period. 3 - The concentration increased 2.5 times. Therefore, the mineralized N amount in the control treatment during cultivation can be calculated to be 43 mg N / kg soil. 2.2. Cultivation 30 The soil of the Queen pH Significant interactions between fertilization and lime treatments on soil pH were observed (Table 17). Lime treatment increased soil active acidity only in the unfertilized treatments, with T2 showing an 8% increase in soil pH compared to T2 (Figure 2). The average soil pH in the fertilization treatments was 55% higher than that in T2, which is attributed to the proton consumption during urea hydrolysis, thus increasing soil pH. No effect of lime treatment on pH was observed in the fertilization treatment. In this sense, an increase in soil pH would reduce urease activity (Cabrera et al., 1991). Therefore, the reason why lime treatment had no effect on pH in the fertilization treatment is that: 1) urea hydrolysis has a greater effect on soil pH, masking the effect of lime treatment; and / or 2) there is an interaction between lime treatment and urea hydrolysis, which makes the effects of these two processes on soil pH non-additive. surface 17. Results of the analysis of variance for pH measured at the end of cultivation. Among the fertilization treatments, only T10 lime and T3 had different pH values, as the former's pH was slightly higher than the latter's (+3.7%). The most significant difference between the treatments was the application of lime. However, because CaCO3... The application of lime 3 did not affect the pH of any other fertilization treatments, therefore it cannot be concluded that lime treatment was the primary cause of the pH difference between T10 lime and T3. The differences between these treatments are related to the observed N-NO... 3 - The concentration difference is relevant. Among all fertilization treatments, the N-NO content of T10 lime was [missing information]. 3 - The lowest concentration (Figure 15) indicates that nitrification was effectively limited. Considering that nitrification causes proton release, which can partially compensate for the effects of lime treatment and / or urea hydrolysis on soil pH, the changes in nitrification rate can partially explain the differences in soil pH between treatments. 2.3.N-NH3 Volatilization rate NH The results of the volatile matter study are as follows. On day 1, the NH3 in lime T1... The emissions from treatment 3 were 30 times the average of the other treatments (Table 18). On day 2, emissions increased in all treatment groups except T2 (control group), T8, and T9, where no effect of lime treatment was observed. Also on that day, emissions from treatments T3, T5, and T7 (which used 1.5, 1.5, and 2 L Mg, respectively) increased. -1 NH (for the corresponding product processing) 3. Emissions are based on the treatment of products with a larger ratio (2, 2, and 3 L Mg for T4, T6, and T8, respectively). -1 NH More than twice the emissions of 3. Therefore, the product application rate of urea is an important factor in the early stages after fertilizer application, and it was observed in the application of three of the four products evaluated (formulation C, formulation D, and formulation A). Furthermore, even with higher application rates, these products were still not as effective as formulation B in reducing NH3 emissions. 3. Volatilization. On day 3, fertilizer and lime treatment affected NH4+. 3. The effect of volatilization rate is significant (Table 17). Here, reducing NH3... 3. The general trend of volatilization is contrary to previous observations. Lime-treated soils tend to release more NH3 on the first and second days. 3. Emissions have now decreased by 8%. Furthermore, compared to T3, T4, T5, T6, T7, and T8, the treatment of untreated urea (T1) exhibits lower NH3 emissions. 3. Emission rates. As in the previous days, T9 and T10 showed no difference from T2. Until the third day, regarding NH... 3. During the quantitative analysis, the contents of the trap turned slightly pink upon the addition of NaOH (50% w / w). This observation, along with the strong odor of the product treated with formulation B, indicates that the product is volatile and that the generated gas is soluble in H₂O. 2SO 4. In the trap. On day 4, no effect of lime treatment was observed (Table 18). Among the treatments assessed, T8 had a 70% higher emission rate than T6 (but no difference from T1), while the emission rates of T3, T4, T5, and T7 fell between those of the two treatments (i.e., T8 and T6). Furthermore, the emission rates of T9 and T10 were lower, and no different from T2. On day 5, the magnitude of the differences between the treatments began to decrease, with T6 showing a decrease in NH3 emissions. T3 emissions are 30% higher than T7, while the values ​​for T1, T3, T4, T5, and T8 fall between those two treatments (i.e., T6 and T7). Similarly, T9 and T10 have lower emission rates and are no different from T2. The correlation between lime treatment and fertilization treatment was observed on days 7 and 9 (Table 18). The most significant change was observed on day 7 under lime treatment T9. Before day 7, compared with the control group (T2), the daily NH3 levels under lime treatment T9 were significantly lower. The emission rates are similar. However, on day 7, the NH3 of T9 lime... The emissions from treatment 3 were 10 times the average emissions from treatments T2, T2 lime, T9, T10, and T10 lime. This effect was even more pronounced on day 9, with T9 and T9 lime exhibiting the highest volatilization rates across all treatments. Furthermore, on this day, there was no difference between treatments T1, T3, T4, T5, T6, T7, and T8 (with or without lime), but the emitted NH3... 3 is still more than T2 and T10 (with or without lime). On day 11, the treatment receiving the highest proportion of formulation B (T10) began to differ from the control group (T2), while T9 still exhibited the highest volatility among all treatments. This trend reversed on day 15, at which point T10 had the highest volatility. From that day onward, the NH4+ content in all treatments... 3. The volatilization rate decreased over time, but the overall trend was T10 > T9 > T1 = T3 = T4 = T5 = T6 = T7 = T8 > T2. Except for day 19, there was no interaction between lime treatment and fertilization. surface 18.N-HN Results of the analysis of variance of emission rates 2.4. Cumulative evaporation Throughout the entire cultivation process, except for day 1 (Table 19), no effect of lime application on NH3 was observed. 3. Effect of cumulative release. Therefore, apart from the day, these results (Table 20) describe the NH3 release from the lime-treated and untreated experimental units in each treatment. 3. Average cumulative volatilization. In fact, lime treatment affects NH4+. The volatilization rate of 3 (Section 2.3) does not affect the cumulative emissions, indicating that the impact of lime treatment on this volatilization rate is compensated for throughout the period. That is, for example, if T1 lime has a volatilization rate of NH3 on day 1... The emission rate was higher in day 3 than in day 1, but the emission rate in the following days was proportionally lower than in day 1. On day 1 and as observed for volatility (Table 18), all treated NH4+ The emissions of the three materials are the same, except for T1 lime, their NH3 emissions are... The emissions from treatment 3 were 30 times the average of the other treatments (data not shown). On day 2, the cumulative emissions of treated urea (T3 to T10) were lower than those of normal urea (T1) (Table 20), and in some cases (T4, T8, T9, and T10) were no different from those of unfertilized soil (T2). The trend on day 3 was similar to that observed on day 2, but T3 and T5 (the lowest ratios of formulations C and D) were no different from those of untreated urea (T1), and only the treatments with formulation B (T9 and T10) emitted NH3. 3. Cumulative emissions were the same as the control (T2). On days 4 and 5, only T6, T8, and T9 had lower cumulative emissions than untreated urea (T1), and T8 and T9 were no different from T2. However, on day 7, T6 showed a reduction in NH3 compared to T1. The efficiency of emissions is no longer significant. On day 9, the cumulative NH3 levels of formulation B (T9) at the lowest ratio and the control group (T2) were compared. 3. Differences in release rates began to emerge. By day 15, even the treatment with the highest concentration of formulation B (T10) began to show higher cumulative NH3 levels than T2. 3. Emissions. From that day until day 23, the general trend was: T1, T3, T4, T5, T6, T7, T8 > T10 > T9 > T2. By the end of the experiment, only the cumulative emissions of T10 were lower than those of T1. surface 19. Cumulative N-HN 3. Results of the analysis of variance on emissions (mg N) surface 20. The cumulative N-NH4+ released by each experimental unit during the 30-day cultivation experiment. Comparison of average values ​​of 3 (mg) *Since no effect of lime treatment was observed from day 2 to day 30 (Table 19), the data presented represent the average between the lime-treated and lime-free treatments. **Data for day 1 are not presented in this table because a significant difference between lime treatment and fertilizer treatment was observed on that day. Results from day 1 are discussed in this paper. 2.5. Applied N At the end of the recycling experiment, the recovered fertilizer -N (in the form of NH4+) The percentage of nitrogen (in the form of mineral nitrogen) in the soil ranged from 65% to 92%. No effect of lime treatment on this variable was observed. Conversely, urea treatment had a significant effect (p=0.0391). Among the treatments assessed, T4 and T8 showed higher recoveries than T9 (Table 21). The differences observed in fertilizer-N recovery could be attributed to nitrogen loss during denitrification, nitrogen fixation in microbial biomass, or accumulation of nitrogen in chemical forms not calculated in the study (e.g., in the form of urea). surface 21. Results from N% of the fertilizer recovered at the end of the experiment. 3. In conclusion, among the treatments evaluated, only 14.0 L Mg was effective compared to untreated urea. -1 Applying formulation B at a ratio that reduces NH3 volatilization during the 30-day incubation period can reduce the amount of NH3 volatilized. 3. Cumulative Amount. Considering formulation B (14.0 L Mg -1 In the later stages of cultivation, NH The high volatilization rate of urea means that, with prolonged cultivation, the cumulative volatilization of this treatment will be comparable to that of other treatments. However, in all cases, urea treatment causes a decrease in volatilization rate at some point during cultivation. This effect depends on the product, ratio, and lime application. Therefore, the use of materials (depending on the product and ratio) can be assessed as a strategy that helps synchronize N availability with plant demand, thereby limiting potential N loss. 4. References Bremner, JM and Keeney, DR (1965). Steam distillation methods for determination of ammonium, nitrate and nitrite. Analytica chimica acta, 32, 485-495. Bouyoucos, GJ (1936). Directions for making mechanical analyzes of soils by the hydrometer method. Soil Science, 42(3), 225-230. Cabrera, M. L., Kissel, D. E., & Bock, B. R. (1991). Urea hydrolysis in soil: Effects of urea concentration and soil pH. Soil Biology and Biochemistry, 23(12), 1121-1124. Chapman, H. D. (1965). Cation‐exchange capacity. Methods of Soil Analysis: Part 2 Chemical and Microbiological Properties, 9, 891-901. Haby, V. A., Russelle, M. P., & Skogley, E. O. (1990). Testing soils for potassium, calcium, and magnesium. Soil testing and plant analysis, 3, 181-227. Walkley, A., & Black, I. A. (1934). An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Science, 37(1), 29-38. None [ Figure 1] shows N-NH 4 + , N-NO 3 - and total inorganic N (N-NH 4 + + N-NO 3 - Bar graph of N-NH concentration. Lowercase letters inside the bars indicate significant N-NH concentrations between treatments. 4 + The difference was statistically significant (p < 0.005), while the outer edge of the bar indicated significant N-NO. 3 - Differences. The capital letters at the top of the bars indicate significant differences in total inorganic N between treatments; and [ picture [2] Bar graph showing soil pH at the end of the experiment. Lowercase letters indicate significant differences between treatments (p < 0.005); and

Claims

1. A method for inhibiting urease activity and / or fertilizing soil, the method comprising applying a urease inhibitor composition to the soil, wherein the urease inhibitor composition comprises: 0.1% to 65% by weight of tributylhydroquinone, based on the total weight of the composition; an additive component selected from the group consisting of: citral, isopropyl acetone, coumarin, acetophenone, itacoic acid, adipic acid, maleic acid, octanoic acid, ascorbic acid, acetopropionic acid, triethyl citrate, isoborneol acetate, and combinations thereof; and an organic solvent selected from the group consisting of: dimethyl sulfoxide, xylene, and combinations thereof.

2. The method of claim 1, wherein dimethyl sulfoxide and xylene are present in a weight ratio of 1:2 to 2:

1.

3. The method of claim 1, wherein the tert-butylhydroquinone and the additive component are present in a weight ratio of 1:10 to 10:

1.

4. The method of claim 1, wherein the additive component is present in an amount of 1% to 50% by weight, based on the total weight of the composition.

5. The method of claim 1, wherein the urease inhibitor composition further comprises a surfactant, an emulsifier, an antifoaming agent, a stabilizer, or a combination thereof.

6. The method of claim 1, wherein at least 50% of urease activity is inhibited.

7. The method of claim 1, wherein the method improves plant growth and / or plant health.

8. An agricultural composition comprising: a urease inhibitor composition; and a solid urea-containing fertilizer, wherein the urease inhibitor composition comprises tributylhydroquinone; an additive component selected from the group consisting of: citral, isopropyl acetone, coumarin, acetophenone, itaconic acid, adipic acid, maleic acid, octanoic acid, ascorbic acid, acetopropionic acid, triethyl citrate, isoborneol acetate, and combinations thereof; and an organic solvent selected from the group consisting of: dimethyl sulfoxide, xylene, and combinations thereof, wherein the urease inhibitor composition is present in an amount of 0.001% to 10% by weight of the total weight of the agricultural composition, and wherein the surface of the solid urea-containing fertilizer is coated with the urease inhibitor composition.

9. The agricultural composition of claim 8, wherein the solid urea fertilizer is in granular form.

10. The agricultural composition of claim 9, wherein the average particle size (d50) of the solid urea fertilizer granules is in the range of 0.5 to 2.5 mm.

11. The agricultural composition of claim 9, wherein the sieve aperture size of the solid urea fertilizer granules is in the range of 16 sieve apertures to 100 US sieve apertures.

12. The agricultural composition of claim 8, wherein dimethyl sulfoxide and xylene are present in a weight ratio of 1:2 to 2:

1.

13. The agricultural composition of claim 8, wherein the tributylhydroquinone and the additive component are present in a weight ratio of 1:10 to 10:

1.

14. The agricultural composition of claim 8, wherein the additive component is present in an amount of 1% to 50% by weight, based on the total weight of the urease inhibitor composition.

15. The agricultural composition of claim 8, wherein the urease inhibitor composition further comprises a surfactant, an emulsifier, an antifoaming agent, a stabilizer, or a combination thereof.

16. A method for preparing an agricultural composition as claimed in claim 8, the method comprising applying a urease inhibitor composition in liquid form to the surface of a solid urea-containing fertilizer, thereby coating the solid urea-containing fertilizer.

17. A urease inhibitor composition comprising: tert-butylhydroquinone, present in an amount of 0.1% to 65% by weight of the total weight of the composition; an additive component selected from the group consisting of: citral, isopropyl acetone, coumarin, acetophenone, itaconic acid, adipic acid, maleic acid, octanoic acid, ascorbic acid, acetopropionic acid, triethyl citrate, isoborneol acetate, and combinations thereof; and an organic solvent selected from the group consisting of: dimethyl sulfoxide, xylene, and combinations thereof, wherein the additive component is present in an amount of 1% to 50% by weight of the total weight of the composition.

18. The composition of claim 17, wherein the tributylhydroquinone and the additive component are present in a weight ratio of 1:10 to 10:

1.

19. The composition of claim 17, wherein dimethyl sulfoxide and xylene are present in a weight ratio of 1:2 to 2:

1.

20. The composition of claim 17, wherein at least 50% of urease activity is inhibited.

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