83 results about "Mesotrione" patented technology

The present disclosure relates to herbicidal combinations, compositions and methods for controlling weeds comprising the carbamate herbicide asulam and an additional herbicide selected from the group comprising cyclohexanedione oxime herbicides, pyrimidinylsulfonyhirea herbicides, triazolopyrimidine herbicides, imidazolinone herbicides, alkylazine herbicides, triketone herbicides, N-phenylimide herbicides or chloroacetamide herbicides. Specifically, the additional herbicide may be one of clethodim, chlorimuron, diclosulam, imazamox, imazethapyr, indaziflam, mesotrione, saflufenacil, tiafenacil or S-metolachlor.

The present invention provides a continuous drying device for mesotrione, which relates to the field of drying devices. The continuous drying device for mesotrione includes a circulating blower, and also includes a cyclone separation component, a multi-layer filtration component, a heating component and a continuous drying component. The circulating blower conveys wind power to the heating component, the heating component sends hot air into the continuous drying component, the continuous drying component sends materials into the cyclone separation component, and then leads to the multi-layer filtration component until it is connected to the circulating blower again. In this continuous drying device for mesotrione, by setting the multi-layer filtration component, the effect of separating mesotrione in the dried air can be achieved, avoiding waste of raw materials and also preventing the dried air from polluting the environment. By setting the continuous drying component, it can be sucked away by the circulating air, and then separated by the cyclone separator, so as to achieve the effect of comprehensively drying mesotrione until the drying requirements are met.

The present disclosure primarily relates to certain agrochemically active herbicidal combinations comprising (A) diflufenican and (B) mesotrione. The disclosure further relates to the use of these combinations for controlling weeds, in particular for controlling resistant weeds, and to corresponding methods.

The present disclosure primarily relates to certain agrochemically active herbicidal combinations comprising (A) rimisoxafen, and (B) diflufenican, or (A) rimisoxafen, (B) diflufenican and (C) mesotrione. The disclosure further relates to the use of these combinations for controlling weeds, in particular for controlling resistant weeds, and to corresponding methods.

The present invention relates to the field of herbicides, and discloses a method for preparing mesotrione compounds. The method comprises: 1) subjecting a compound having the structure shown in formula (1) to an acylation reaction with a chlorinating agent to obtain an acylation reaction product; 2) subjecting the acylation reaction product obtained in step 1) to an esterification reaction with a compound having the structure shown in formula (2) to obtain an esterification reaction product; 3) contacting the esterification reaction product obtained in step 2) with a rearrangement reagent having the structure shown in formula (4) to obtain a compound having the structure shown in formula (3). This method does not use cyanide-based rearrangement reagents, and has simple operation and low cost, and is very suitable for industrial production.

A crystalline hydrate of topramezone sodium salt is provided. A preparation method for the crystalline hydrate of topramezone sodium salt and herbicidal compositions including the crystalline hydrate of topramezone sodium salt are also provided.

The present invention discloses a preparation method of mesotrione, and the method steps are as follows: S1: Under the protection of an inert gas, 3-chloro-2-methylbenzenemethanethiol, phosphorus oxychloride, a composite catalyst and an organic solvent are mixed and reacted. After the reaction is completed, 2-chloro-3-methyl-4-methylthiophenylaldehyde is obtained through separation and vacuum distillation; 2-chloro-3-methyl-4-methylthiophenylaldehyde is mixed with sodium tungstate dihydrate and methanol, and hydrogen peroxide is added for reaction. After the reaction, 2-chloro-3-methyl-4-methylsulfonylbenzoic acid is obtained through filtration; S2: Preparation of 2-chloro-3-(2,2,2-trifluoroethoxy)methyl-4-methylsulfonylbenzoic acid; S3: 2-chloro-3-(2,2,2-trifluoroethoxy)methyl-4-methylsulfonylbenzoic acid is mixed and reacted with thionyl chloride and dichloroethane, and the reaction product is further reacted with 1,3-cyclohexanedione, triethylamine and samarium trichloride to prepare mesotrione. The present invention simplifies the preparation route of mesotrione, the preparation process is more green and safe, and the yield of mesotrione is higher.

The invention belongs to the field of pesticides, and particularly relates to a ternary weeding composition and application thereof. The ternary weeding composition comprises an active component A, an active component B and an active component C with effective weeding amounts, and the active component A is dichloro clomazone or dichloro clomazone; the active ingredient B is isoxaflutole, toprazole fluridone or mesotrione; the active ingredient C is metribuzin. The composition can be used for effectively preventing and removing various weeds such as gramineous weeds and broadleaf weeds, and has the characteristics of expanding the herbicide controlling spectrum, reducing the application amount, generating a synergistic effect, solving resistant weeds and the like.

The present invention relates to a method for post-emergent weed control, which comprises applying an effective amount of a composition comprising herbicide A (component A), mesotrione (component B) and optionally at least one herbicide C (component C) to emerged weeds, or an area, where weeds are growing.

The invention discloses a preparation method of a nicosulfuron, mesotrione and atrazine mixed dispersible oil suspending agent (OD) beneficial to grinding. The preparation method comprises the following steps: S1, preparing a basic solution; s2, preparing a premix; and S3, grinding and uniformly stirring. According to the method, the dispersible oil suspending agent (OD) is easy to grind, the dispersible oil suspending agent (OD) can be ground to smaller particle size by using the same equipment process in production, the settling velocity of the dispersible oil suspending agent (OD) in the storage process is reduced, the dispersible oil suspending agent (OD) has better physical stability, and meanwhile, the smaller particle size is more easily absorbed by target crops, the pesticide effect is increased, and the dosage per mu is reduced.

This invention relates to the fields of environmental pollution remediation and biocatalysis, and provides a method for preparing a self-supplied H2O2 cathode material via an electroenzyme cascade and its application. The cathode material is an ionic liquid-modified CPO-IL. EMB The bio-hybrid material formed by immobilizing molybdenum disulfide-modified MoS2@Co-CNNT composite material, namely CPO-IL EMB / MoS2@Co-CNNT. An electroenzyme cascade degradation system was constructed using this biohybrid material as the cathode. By controlling the electrode potential, controllable H2O2 generation was achieved while protecting the Fe(III) in the iron porphyrin ring of CPO from reduction, thus maintaining the intrinsic oxidative activity of the enzyme. The in-situ generated H2O2 activates CPO-IL. EMB It efficiently catalyzes the oxidative degradation of mesotrione. This invention requires no external CPO-IL. EMB It is green and environmentally friendly, with high degradation efficiency, and has promising applications in agricultural wastewater treatment and environmental remediation.

Provided are a herbicide composition and a weed controlling method, which exhibit an excellent controlling effect against weeds.　Provided is a herbicide composition comprising: epyrifenacil; and at least one compound selected from the group consisting of imazamox and salts thereof, R-imazamox and salts thereof, phenmedipham, pyridafol, aclonifen, cinmethylin, prosulfocarb, bixlozone, mesotrione, napropamide-M, and beflubutamid-M.

The application belongs to the field of agricultural biotechnology and environmental microbial engineering, and discloses a mesotrione nitroreductase Mtnr, a coding gene thereof and application. The nucleotide sequence is SEQ ID NO. 1, the full length is 756 bp, and 251 amino acids are encoded, and the amino acid sequence is SEQ ID NO. 2. The highest homology of Mtnr with a reported nitroreductase is only 50.6%, and therefore it is a new nitroreductase gene. The nitroreductase Mtnr provided by the application can catalyze the nitroreduction of mesotrione, and convert mesotrione into a product 2-amino-4-methylsulfonylbenzoic acid (AMBA) without herbicidal activity, indicating that the Mtnr gene has great application prospect in mesotrione biodegradation detoxification and remediation.

The invention discloses a paddy field pesticide and a preparation process thereof, and relates to the technical field of paddy field pesticides, the paddy field pesticide comprises the following active components: mesotrione, pyribenzoxim and 2-methyl-4-chloro-phenoxyacetic acid sodium, the mass ratio of mesotrione to pyribenzoxim to 2-methyl-4-chloro-phenoxyacetic acid sodium is (1-10): (1-5): (10-50), and the mass ratio of mesotrione to pyribenzoxim to 2-methyl-4-chloro-phenoxyacetic acid sodium is (1-10): (1-5): (10-50). The mass ratio of the mesotrione to the pyribenzoxim to the 2-methyl-4-chloro-phenoxyacetic acid sodium is (2-5): (1-3): (20-40), and the mass ratio of the mesotrione to the pyribenzoxim to the 2-methyl-4-chloro-phenoxyacetic acid sodium is 3: 1: 30. The paddy field weeding composition which has the advantages of synergistic interaction, broad spectrum, high efficiency, resistance delay, crop safety, convenience in use and the like is successfully developed, the prominent problems in current paddy field weed control are effectively solved, and the paddy field weeding composition has extremely high application value and market prospect.

The invention relates to the technical field of pesticides, in particular to mesotrione soluble liquid as well as a preparation method and application thereof. The mesotrione suspending agent comprises the following components in percentage by mass: 5-40% of mesotrione technical, 5-30% of a solvent, 3-20% of a surfactant, 1-10% of an antifreeze agent, 0.3-3% of a pH regulator and the balance of deionized water. According to the invention, the solubility of mesotrione is improved by selecting proper solvent, antifreezing agent and surfactant and reasonable proportion, so that the soluble liquid with high stability and high drug effect is prepared. The mesotrione soluble liquid can be applied to prevention and removal of weeds in uncultivated land and cultivated land, and does not cause phytotoxicity to crops. The herbicide is an agricultural herbicide which is good in weeding effect, simple in production process and free of environmental pollution.

The invention discloses an application of mesotrione in increasing crop yield. The mesotrione has the following application: increasing rice yield; the effective ear number of rice is increased; the grain number per ear of the rice is increased; the thousand seed weight of the rice is improved; the yield of wheat is improved; the corn yield is improved; the yield of potatoes is improved. The foliage fertilizer acts on leaf surfaces of crops (rice, wheat, corn and potatoes) in a spraying manner, so that the yield of the crops is increased; mesotrione is low in toxicity, easy to decompose, small in influence on human bodies and high in safety; the composition is applied to growth of crops, the use concentration is low, the use mode is different from that of a herbicide used for soil and weeds, the application of the composition is expanded, and a new technical scheme for increasing the crop yield is developed.

The application relates to a preparation method of a mesotrione intermediate. S1, 3-chloro-2-methyl aniline, hydrochloric acid and pure water are placed in a reaction kettle, stirring, cooling, dropwise addition of a NaNO2 solution, after dropwise addition is completed, temperature control is carried out, CH3SNa aqueous solution is added, after dropwise addition is completed, slow temperature rising is carried out, and reaction is continuously carried out for 8 hours; extraction, water washing and distillation are sequentially carried out, and 1-chloro-2-methyl benzyl sulfide is obtained; S2, under the atmosphere of nitrogen, formylation reagent is added into a reaction kettle under the condition of 0-10 DEG C, a catalyst is dropwise added and stirring is carried out, 1-chloro-2-methyl benzyl sulfide is dropwise added, temperature rising is carried out, and 2-chloro-3-methyl-4-methylthio benzaldehyde is obtained through post-treatment; S3, under the atmosphere of nitrogen, methanol, 2-chloro-3-methyl-4-methylthio benzaldehyde and sodium tungstate dihydrate are added into a reaction kettle, hydrogen peroxide is dropwise added, the reaction temperature is controlled, and reaction is carried out, and the mesotrione intermediate is obtained through post-treatment.

The present invention is directed to an aqueous composition comprising a mixture of epyrifenacil, mesotrione and pyroxasulfone. The present invention is further directed to methods of controlling weeds by applying the compositions of the present invention to a weed or an area in need of weed control.

The invention belongs to the technical field of herbicides, and particularly relates to a preparation method of a sugarcane field herbicide containing mesotrione, triclopyr and halosulfuron-methyl, and the preparation method comprises the following steps: S1, preparing mesotrione salt; s2, preparing triclopyr acetate; s3, preparation of a dosage form: adding auxiliary components which are allowed to be added in pesticide science into the mesotrione salt, the triclopyr and the halosulfuron-methyl active compound to prepare the pesticide preparation. According to the invention, the stability problem of compounding of three effective components, namely mesotrione, triclopyr and halosulfuron-methyl, is successfully solved, the compound herbicide with stable performance is prepared, and the market blank is filled; the production process is simplified, the production and packaging material cost is reduced, the production of packaging waste is reduced, and the environmental protection requirement is met; when farmers use the pesticide, independent proportioning is not needed, the operation is more convenient, and the pesticide application efficiency is improved; the product accords with national supervision policies on pesticide products, and can provide support for standard operation of production enterprises and scientific pesticide application of farmers.

The invention provides a corn field multi-element compound water dispersible granule and a preparation method thereof, the corn field multi-element compound water dispersible granule is a water dispersible granule prepared by compounding aminopyridine salt, mesotrione and nicosulfuron salt, the control effect is good, the physical and chemical properties are stable, the corn field multi-element compound water dispersible granule is not easy to decompose and deteriorate to generate phytotoxicity, and the suspension rate reaches more than 96%; in the use process, the water dispersible granule only needs to be dispersed once, the use process is simple, and the water dispersible granule is a granular solid, is good in flowability, does not stick to the wall after being poured, and does not remain in a packaging container to form secondary pollution.

The application relates to a device for degrading a methasulfocarb pesticide by using a double-chamber bioelectrochemical system and a degradation method thereof, and relates to the field of degradation of methasulfocarb pesticide wastewater.The device comprises an anode system and a cathode system, and the methasulfocarb pollutants are located in the cathode system.The method is to use a bioelectrochemical reduction technology in the cathode system, to strengthen the methasulfocarb pesticide wastewater treatment under the action of a constant voltage through the synergistic effect of electrophilic microorganisms of a biological cathode and an electrode.The application has the characteristics of simple operation, low cost, low energy consumption and high degradation efficiency.The application is suitable for repairing soil or water pollution containing the methasulfocarb pesticide.

The application discloses a rape chemical growth retardant, a preparation method and application thereof, and belongs to the field of agricultural technology. A kind of rape chemical growth retardant is prepared by mixing difenoxure solution and mesotrione according to the proportion of 7.5mL:15g.The rape chemical growth retardant can improve the dehydration efficiency of rape after acting on rape, and can also improve the offspring yield of rape seed, increase seed vigor, improve germination potential and germination rate and other factors, providing a new method for improving rape mechanization seed production, breeding efficiency and seed quality.The active ingredients of the product are two low-toxicity desiccants, which have low toxicity residue, weak toxicity, low cost, good effect and other characteristics.

The present invention discloses a dosage-reducing and synergistic herbicide composition and use thereof in controlling weeds in corn fields, belonging to the technical field of agricultural chemistry. The herbicide composition comprises the following raw materials, measured in percentage by weight: 18-20 wt% of mesotrione, 2-8 wt% of seaweed extract, 1-3 wt% of sulfamethoxam, 5-7 wt% of a filler, 5-15 wt% of a surfactant, and the balance being a solvent. Through the synergistic effect between the raw material components defined in the present invention, a small amount of the herbicide composition can be applied to effectively control weeds in corn fields and reduce pollution to the environment, and further increase corn yield, thus achieving the purpose of dosage-reduction and synergistic effect. This further proves that the herbicide composition of the present invention has excellent prospects for use in weed control.

The invention relates to the field of pesticides and herbicides, in particular to a composition containing tribenuron-methyl, fluroxypyr and carfentrazone-ethyl as well as a preparation method and application of the composition. The composition containing tribenuron-methyl, fluroxypyr and carfentrazone-ethyl is prepared from the following preparation raw materials in parts by mass: 23 to 26 parts of an active component, 4 to 6 parts of a composite surfactant, 1 to 3 parts of an anti-freezing agent, 1 to 2 parts of a bio-based thickening agent, 4 to 5 parts of a synergist, 1 to 5 parts of a dispersing agent, 10 to 15 parts of an emulsifying agent and 50 to 55 parts of methyl oleate. The pesticide composition disclosed by the invention has the advantages of low toxicity, environment friendliness, cost saving and the like while improving the weeding effect, and is an efficient, safe and environment-friendly pesticide product.

The invention discloses an HPPD inhibitor with a morpholine cyclic carbonyl structure, a composition and application, and belongs to the field of herbicides. The HPPD inhibitor with the morpholine cyclic carbonyl structure, provided by the invention, has a relatively good control effect on broadleaf weeds and grassy weeds. The preferable compound still keeps super-efficient herbicidal activity on selected weeds at the extremely low concentration of 9.375 g ai / ha, is superior to that of a commercially available HPPD inhibition type herbicide mesotrione, and shows absolute advantages for a malignant weed brome in a wheat field. Meanwhile, the compound is high in crop safety, the preferable compound has no damage to wheat and peanuts under the dosage of 150 g ai / ha, the inhibition rate of the preferable compound to various crops is remarkably lower than that of mesotrione even under the high concentration of 600 g ai / ha, and the compound is a selective herbicide with excellent development potential.

The invention discloses a corn HPPD mutant and application of the corn HPPD mutant in improvement of plant herbicide tolerance. The invention specifically discloses a mutant protein, and the amino acid sequence of the mutant protein comprises mutation at at least one of the following positions relative to the amino acid sequence as shown in SEQ ID NO: 1: 18th, 20th and 26th sites. The invention also discloses an application of the mutant protein in improving the tolerance of plants to HPPD inhibitor herbicides (such as mesotrione). Experiments show that when the coding gene of the mutant protein is used for transforming rice, the mesotrione tolerance of a transgenic plant can be remarkably improved, and the mesotrione tolerance is improved by four times compared with that of a wild plant. Good gene resources are provided for herbicide-resistant crop breeding, HPPD inhibitor herbicide resistance genes are enriched, a foundation is laid for cultivating mesotrione-resistant new germplasm, and potential market value and wide application prospects are achieved in the agricultural field.

The invention discloses a mesotrione soybean oil suspending agent and a preparation process thereof, and relates to the technical field of pesticides. The mesotrione soybean oil suspending agent is prepared from the following raw materials in percentage by mass: 15 to 25 percent of mesotrione active compound, 8 to 16 percent of auxiliary agent, 10 to 25 percent of methyl oleate, 2 to 5 percent of solvent, 0.1 to 3 percent of auxiliary material, 0.1 to 0.2 percent of pH regulator and the balance of soybean oil. The preparation method of the mesotrione soybean oil suspending agent specifically comprises the following steps: uniformly mixing the raw materials of the mesotrione soybean oil suspending agent, and shearing at a high shearing rate for 5-15 minutes; and sanding the mesotrione soybean oil suspension with zirconia beads for 1-3 hours to obtain the mesotrione soybean oil suspension. Experimental results show that the mesotrione soybean oil suspending agent provided by the invention has relatively good suspension property and emulsifying property.

The invention relates to the technical field of pesticides, in particular to a herbicidal composition, preparation and application thereof. The herbicidal composition comprises a component A and a component B, wherein, the component A is benzylazole, and the component B is at least one of acetochlor, butachlor, metolachlo, dimethylphenoxychlor, mesotrione, nicosulfuron, atrazine, terbuthylazine, metribuzin, S-metolachlor and dimethylphenoxychlor. The weight ratio of the component A to the component B is 1:(1-80).

The present invention discloses a mesotrione nitroreductase gene xhctnr , the protein encoded thereby and uses thereof. The mesotrione nitroreductase gene of the present invention xhctnr , its nucleotide sequence is as shown in SEQ ID NO.1, and the encoded protein Xhctnr, namely mesotrione nitroreductase Xhctnr, its amino acid sequence is as shown in SEQ ID NO.2. Mesotrione nitroreductase Xhctnr can degrade mesotrione into the product AMBA and lose its herbicidal activity. The mesotrione nitroreductase gene of the present invention xhctnr and the protein encoded thereby have great application prospects in the biodegradation detoxification and bioremediation of mesotrione.

The present application relates to the technical field of mesotrione, and particularly relates to a preparation method of mesotrione intermediate, which comprises the following steps: (1) a first reaction of a compound shown in formula (II) and sodium thiomethoxide in the presence of a first solvent to obtain a compound shown in formula (III); (2) a second reaction of the compound shown in formula (III) and hydrogen peroxide in the presence of a second solvent under the action of a catalyst to obtain a compound shown in formula (IV); (3) a third reaction of the compound shown in formula (IV) and acid liquor to obtain mesotrione intermediate shown in formula (I); wherein R1 is selected from F, Cl, Br or I; and R2 is selected from C1-C4 alkyl or aromatic group. The method can effectively improve the purity and yield of mesotrione intermediate.