230 results about "Phytotoxicity" patented technology

The invention discloses an application of a CsESE3 gene or a protein coded by the CsESE3 gene in regulation and control of plant shoot development, and belongs to the technical field of plant genetic engineering. Traditional citrus crossbreeding is long in period of cultivating ideal plant type plants, low in selection efficiency and few in selectable cultivation characters. Manual shoot control is high in labor cost, and chemical shoot control has the risk of phytotoxicity. Aiming at the technical problems, the invention provides a new scheme for regulating and controlling the development of citrus branch tips based on CsESE3 gene expression: the development of the branch tips is obviously promoted after the expression of the CsESE3 gene is improved, so that the CsESE3 can become a target spot for regulating and controlling the development of the citrus branch tips.

The invention discloses a special growth regulator for pepper based on compounding of propionyl brassinolide and amino-oligosaccharin and application of the special growth regulator, and belongs to the technical field of agricultural biology. According to the regulating agent, 0.0008 to 0.0012 percent of propionyl brassinolide and 2.95 to 3.05 percent of amino-oligosaccharin are accurately matched with each other. The formula breaks through the contradiction between the root promotion requirement of high-dose amino-oligosaccharin and the safety threshold of low-dose brassinolide, and overcomes the phytotoxicity risk of the traditional dosage form. The regulator prepared by the invention can enhance the growth vigor of the pepper, improve the product and quality of the pepper, and also can effectively prevent viral diseases of the pepper.

The invention belongs to the technical field of pesticide compositions, and particularly provides a weeding composition containing topramezone or salt thereof, which comprises topramezone or salt thereof, agriculturally acceptable auxiliaries and biostimulant, the biostimulant is complex enzyme glycoside. The topramezone composition does not cause phytotoxicity to crops such as corn when used under the high-temperature condition, the use environment of topramezone is widened, and the topramezone composition can be used as a safe herbicide composition for field crops such as corn under the high-temperature condition in summer. Through further screening of auxiliaries, the weeding composition provided by the invention can improve the mixing performance of the preparation, has strong hard water resistance, is beneficial to plant absorption, improves the weeding effect, and is a safe and efficient herbicide preparation.

The present invention belongs to the field of plant growth regulators, and specifically relates to a fruit coloring composition, a fruit coloring functional fertilizer and their applications. The fruit coloring composition comprises 1-aminocyclopropane carboxylic acid and a protective auxiliary agent, and the mass ratio of 1-aminocyclopropane carboxylic acid to the protective auxiliary agent is 1:0.1 to 200; the protective auxiliary agent is selected from 5-aminolevulinic acid, diethyl aminoethyl hexanoate or choline chloride. The present invention first discloses the use of protective auxiliary agents such as 5-aminolevulinic acid, which can effectively improve the adverse effects when ACC is applied alone, such as high dosage for coloring, easy to cause negative phenomena such as plant defoliation, fruit cracking, fruit drop and quality decline. When the effective application dosage is only 0.05 to 2.5 ppm, excellent coloring effect can be achieved. At the same time, the safety of exogenous application of ACC is effectively improved, and the planting effect of fruit and vegetable crops can be improved in aspects such as preventing fruit drop, increasing fruit sweetness, reducing phytotoxicity, and relieving the growth inhibition of stems, leaves and fruits.

The invention discloses modified biochar as well as a preparation method and application thereof, and belongs to the technical field of aerobic composting additives, the preparation method of the modified biochar comprises the following steps: adding corn straw biochar into a Na2HPO4 solution according to a solid-to-liquid ratio of 1g: (5-10) mL by adopting an impregnation method, adjusting the pH value of a mixed system to 10.8-11.2 by adopting an alkali liquor, and stirring to obtain a mixed solution; then carrying out magnetic stirring reaction, and after the reaction is finished, carrying out centrifugal separation, washing and drying to obtain the modified biochar. The prepared modified biochar is used as an aerobic composting additive, so that greenhouse gas emission can be remarkably reduced, nitrogen retention and compost nutrient content are improved, compost maturity is promoted, plant toxicity is reduced, and a microbial community structure is directionally regulated and controlled. According to the invention, the functionality of the biochar is enhanced through chemical modification, the synergism of pollution reduction, synergism, carbon sequestration and decay promotion is realized, and an effective technical path is provided for realizing low-carbon, efficient and sustainable organic waste resource utilization.

Belongs to the technical field of pine wood nematode disease prevention and control, and particularly relates to a preparation method and application of a pyrazole-chitosan oligosaccharide derivative. Chloroacetyl chloride serves as an acylating agent, chitosan oligosaccharide is acetylated, and chloroacetyl chitosan oligosaccharide is generated; then, a pyrazole molecule with nematicidal activity is connected to the Cl site of the chloracetyl chitosan oligosaccharide through ammonolysis reaction, and the novel pyrazole-chitosan oligosaccharide derivative is obtained. The derivative has relatively high contact activity on pine wood nematodes, and LC50 of 24 hours and LC50 of 48 hours are 4.814 mM and 4.061 mM respectively; the chitosan oligosaccharide can remarkably inhibit multiple physiological indexes such as movement, feeding and service life of the pine wood nematodes, and is good in stability, low in molecular weight of the chitosan oligosaccharide, good in water solubility, green and environment-friendly, and the plant toxicity is remarkably reduced. The derivative has a good application prospect in the aspect of controlling the pine wood nematode disease and can be applied to prevention and control of the pine wood nematode disease.

The invention discloses a bacillus subtilis strain and application thereof. Belongs to the technical field of gold metolachlor degradation. The method comprises the following steps: taking a soil sample from a perennial land where Jinmetor is applied, taking a bacterial cake of the strain in a basic inorganic salt solid culture medium which takes Jinmetor as a unique carbon source, carrying out primary screening on microorganisms in the soil by observing whether a transparent circle can appear around the bacterial cake or not, determining the degradation rate of the strain through a liquid chromatography, and carrying out secondary screening, and identifying the screened strain through morphology, physiology, biochemistry and molecular biology to obtain the bacillus subtilis TXB2. When the bacillus subtilis TXB2 is used for potting control effect tests and field control effect tests on buckwheat seedlings, phytotoxicity in the buckwheat seedling stage can be relieved, and the bacillus subtilis TXB2 is safe to people and livestock.

The invention discloses an iron-based modifier capable of rapidly degrading farmland soil pesticides and an application method of the iron-based modifier. The iron-based modifier comprises 85-95 parts of industrial micron iron powder and 5-15 parts of nitrogen and sulfur doped biochar. The application method of the iron-based modifier comprises the steps that firstly, the iron-based modifier is spread to the surface layer of farmland soil, ploughing and uniform mixing are conducted, and the concentration of the iron-based modifier is 0.25-1.0 g / kg; then irrigating the farmland, covering a film, preserving moisture, isolating oxygen, maintaining for 5-7 days, and uncovering the film; after the water naturally drops, the crop seeds are sown into the soil, and water and fertilizer management is carried out until harvesting is carried out. The iron-based modifier disclosed by the invention can be used for remarkably reducing the content of pesticides in farmland soil and subsequent crops and rapidly reducing the phytotoxicity of residual pesticides in the soil to the crops, and the soil remediation efficiency is high.

The invention provides a preparation method and application of a chicken manure biogas slurry purified and refined component, the purified and refined component prepared by the method is a phytotoxicity relieving product which is wide in crop phytotoxicity application range and friendly to the ecological environment, and an application method capable of achieving phytotoxicity relieving and pesticide effect increasing on crops in multiple ways and at different time can be achieved. The two-way functional effects of relieving phytotoxicity and enhancing the pesticide effect are realized.

The invention belongs to the field of agricultural bactericides, and particularly relates to a bactericidal composition containing nano-zinc oxide and brucea javanica extract and application of the bactericidal composition, and the mass ratio of the nano-zinc oxide to the brucea javanica extract in active ingredients of the bactericidal composition is 40: 1-1: 40; the bactericidal composition disclosed by the invention has an excellent bactericidal effect, and shows excellent control effects on watermelon fusarium wilt, wheat stem rot, tobacco bacterial wilt, cotton damping-off, cotton damping-off, peanut root rot, peanut stem rot, damping-off, fusarium wilt, damping-off, root rot and the like of fruits, vegetables and beans; the bactericidal composition enhances the bactericidal broad-spectrum property and efficiency, is environment-friendly, does not generate phytotoxicity, is safe to crops, and has a good application prospect.

The invention relates to the field of pesticide preparations, and discloses a sterilization composition containing tetramycin and Saisentong as well as a preparation method and application of the sterilization composition. Tetramycin and Saisentong serve as active components of the composition, and a dual-structure composite lignin derivative system serves as a functional carrier; the system is composed of high-molecular-weight modified lignosulfonate and specific lignin phenol fragments with low polymerization degree. The high-molecular-weight component forms a physical barrier on the surfaces of active component particles, so that the storage stability and the application safety of the preparation are improved; the low-polymerization-degree component can be degraded by an extracellular enzyme secreted by citrus canker pathogen, so that the targeted release of the active component at the focus is realized. The composition disclosed by the invention effectively reduces the decomposition rate of the active components and the phytotoxicity risk to crops, and meanwhile, the field control effect on the citrus canker is remarkably improved. The composition provides an efficient and safe new choice with a targeting effect for chemical prevention and treatment of citrus canker.

The present invention addresses the problem of providing a plant growth aid which can achieve both the reduction of harmful effects thereof and the reduction of plant diseases at high levels.　The present invention is a plant growth aid containing particles having a volume average particle diameter of 10-1000 nm, wherein each of the particles contains a compound (X), copper, and chitosan as constituent components, and the compound (X) has at least two functional groups (x) that are of at least one type and are independently selected from the group consisting of a carboxyl group, a phosphoric acid group, and a sulfonic acid group, and salts thereof.

The invention relates to the technical field of plant breeding, in particular to a mutant of rice ALS protein and application of the mutant. The mutant is obtained by mutating an amino acid sequence of a rice wild-type ALS protein as follows: serine at the 627th site is mutated into threonine, glycine at the 628th site is mutated into histidine, and amino acid at the 629th site is deleted. The application comprises the following steps: (1) enabling plants to have ALS inhibitor herbicide resistance; (2) the resistance of plants to ALS inhibitor herbicides is improved; (3) the phytotoxicity of ALS inhibitor herbicides to plants is reduced; (4) weed control; (5) plant genetic breeding or seed production; and (6) serving as a plant transgenic selection marker. The rice ALS protein mutant is obtained through resistance stress screening, the mutant is reported for the first time, rice can have high resistance to more than two ALS inhibitor herbicides, and the rice ALS protein mutant has high market value and social benefits.

The invention discloses a compound herbicide and a preparation method thereof and relates to the technical field of pesticides. The compound herbicide is compounded by taking rimsulfuron, pyroxsulam and fluroxypyr-mepthyl as effective components and supplementing a safener, a surfactant, an emulsifier, a stabilizer and a solvent. The action mechanisms of the three active ingredients are complementary and synergistic, and annual gramineous weeds and broadleaf weeds in a corn field can be effectively prevented and removed. Through scientific compounding, the application dosage of a single component is remarkably reduced, pesticide residues in the environment and crops are reduced, meanwhile, potential phytotoxicity to the crops is effectively relieved by adding the safener, and the bactericidal composition has the advantages of being efficient, safe and environmentally friendly.

The invention relates to the technical field of rice herbicide phytotoxicity prevention and control, in particular to a method for relieving rice herbicide phytotoxicity in the seedling stage. Paddy rice seeds are soaked with a pyrroloquinoline quinine solution before sowing; the concentration of pyrroloquinoline quinine in the pyrroloquinoline quinine solution is 0.3 to 0.7 [mu] mol / L; the method comprises the following steps: spraying a pyrroloquinoline quinine solution on leaf surfaces in a period from two leaves to one core to three leaves of rice, wherein the concentration of pyrroloquinoline quinine in the pyrroloquinoline quinine solution is 1-2 [mu] mol / L; within 3-7 days after the pyrroloquinoline quinone solution is sprayed on the rice leaf surfaces, cyclopropanesulfonamide and a herbicide are mixed for use. PQQ and cyclopropanesulfonamide are coordinated to effectively relieve the phytotoxicity of herbicides to rice.

The invention discloses an application of 2-amino-3-indolyl butyric acid as a plant phytotoxicity alleviator. According to the application of the 2-amino-3-indolyl butyric acid in the preparation of the plant phytotoxicity alleviator, the concentration of the 2-amino-3-indolyl butyric acid in the preparation is 10-1000 nM. The 2-amino-3-indolyl butyric acid is found to be capable of effectively relieving plant phytotoxicity through seed soaking treatment, and the yield of plants is increased. Under the concentration of 1000nM, the damage of the fluridine.pentus.fenitrothion and the fenitrothion .ethylicin to the rice seeds is relieved in a seed soaking manner, so that the purpose of strengthening the seedlings is achieved; when the concentration is 100 nM, the pesticide damage of isoproturon to wheat seeds can be relieved, and the germination rate, bud length and root length of the wheat seeds are remarkably increased. The 2-amino-3-indolyl butyric acid is a natural product, is low in dosage and environment-friendly, and can effectively relieve plant phytotoxicity, so that the 2-amino-3-indolyl butyric acid is a green and efficient biological source plant phytotoxicity alleviator.

The invention relates to the technical field of agricultural herbicides, and discloses a herbicide suitable for cnidium monnieri planting in southern districts and a preparation method thereof, the herbicide is composed of 4-8% by mass of nicosulfuron, 16-20% by mass of atrazine and 8-12% by mass of quizalofop-p-ethyl, and the balance is water. The mass ratio of nicosulfuron to atrazine is (1: 3)-(1: 5). The nicosulfuron and the atrazine have a dual mechanism of inhibiting the activity of acetolactate synthetase of weeds and blocking photosynthesis, the control effect within 30 days after application reaches 85% or above, gramineae weeds such as digitaria sanguinalis and barnyard grass and broadleaf weeds such as chenopodium album and amaranth can be effectively prevented and removed, only slight phytotoxicity such as transient leaf chlorosis is caused to cnidium monnieri plants, and the effect is remarkable. The quizalofop-p-ethyl inhibits the activity of weed acetyl-coenzyme A carboxylase and blocks fatty acid synthesis, and has a good control effect on green bristlegrass, eleusine indica and other grassy weeds.

The application discloses a triazine herbicide propoxur degrading bacterial strain and application thereof, the bacterial strain is SWFU-DH02 strain which is negative in gram staining reaction and is identified as Microbacterium sp. Exiguobacteruim sp. ) on November 22, 2021, and is deposited in the China General Microbiological Culture Collection Center, and the strain preservation number is CGMCC No. 23948. The application discloses, for the first time, the degradation effect of Microbacterium sp. Exiguobacteruim sp. ) on triazine herbicide propoxur, and a Microbacterium sp. high-efficiency degrading bacterium SWFU-DH02 is screened, the degradation efficiency of the bacterium on propoxur can reach 75.08%, and the bacterium grows optimally under the conditions of pH 7.0, temperature 28 DEG C and salt concentration 1%. The degrading bacterial strain SWFU-DH02 has the characteristics of simple culture, rapid growth and high efficiency of degradation. The application can solve the pollution problem of triazine herbicide propoxur in soil or water, prevent the phytotoxicity of herbicide residues on subsequent crops, and produce non-toxic and non-polluting green agricultural products. The application provides a new biological approach for modern pesticide pollution control.

The present invention primarily relates to the use of compositions comprising L-glufosinate and / or salts thereof in a glufosinate tolerant field crop in foliar application, wherein the compositions contain less than 5 mol.-% of D-glufosinate and / or salts thereof, based on the total amount of L-glufosinate and salts thereof, under certain environmental conditions to achieve an increase in the control of harmful plants and / or a reduction of phytotoxicity in the tolerant field crop. The present invention also relates to according methods of treating a tolerant field crop using the mentioned compositions.

The invention relates to the technical field of weed suppression active substances, in particular to application of 2-piperidinecarboxylic acid in inhibition of barnyard grass seed germination and growth. According to the method, the influence of the 2-piperidinecarboxylic acid on the germination of the barnyard grass seeds is investigated by taking the germination rate of the barnyard grass seeds as an index, and the influence of the 2-piperidinecarboxylic acid on the growth of the barnyard grass is investigated by taking the root length, the seedling length / plant height and the fresh plant weight of the barnyard grass seedlings as indexes. The inhibition effect is enhanced along with the increase of the concentration of the 2-piperidinecarboxylic acid, and under the inhibition effect concentration, the 2-piperidinecarboxylic acid is safe to the growth of transplanted rice seedlings and does not generate obvious phytotoxicity. Therefore, the 2-piperidinecarboxylic acid can be effectively applied to inhibition of germination and growth of the barnyard grass seeds, and can also be applied to preparation of products for inhibiting germination and growth of the barnyard grass seeds.

The present disclosure relates to compositions comprising nitroreductase enzymes; plants, plant calluses, plant seeds, and vegetables incorporating genes expressing nitroreductase enzymes; methods for stably and operably incorporating genes expressing nitroreductase enzymes into plants and plant tissues; wherein the nitroreductase enzymes are capable of reducing nitro groups on phytotoxic and / or otherwise harmful compounds such as, for example, thaxtomins, wherein the thaxtomins are secreted by plant pathogenic bacteria and / or exogenously applied as an agricultural composition such as an herbicide, and wherein reducing the nitro groups renders the thaxtomins non-damaging or reduces the level of damage from the thaxtomins to the plants expressing the nitroreductase enzymes.

This invention discloses a method for low-carbon and high-efficiency organic fertilizer production through tiered oxygen supply composting. This invention uses a compound microbial agent as its core, achieving simultaneous breakthroughs in compost maturity and fertilizer efficiency. By precisely delivering targeted compound microbial agents in stages and coupling them with a tiered oxygen supply strategy, this invention directionally regulates the structure and function of the microbial community, significantly improving organic matter conversion efficiency and the degree of humification. The final product shows a significant increase in organic matter content of 31%, and the seed germination index increases from 71% to 89%, demonstrating its excellent effects in thorough composting and eliminating phytotoxicity. In pot experiments, the biomass of maize plants increased by approximately 97%, further verifying the significant promoting effect of high-quality DOM (dominant organic matter) formed by functional microbial agents on fertilizer efficiency.

The present application belongs to the technical field of herbicide safener, and particularly relates to the use of chlorindole hydrazide as a herbicide safener, chlorindole hydrazide as a safener of nicosulfuron, carfentrazone-ethyl, benzenesulfonamide and quizalofop-p-ethyl, which can relieve or eliminate the crop phytotoxicity caused by the above herbicides, and is applied after or before the crop phytotoxicity is caused. The application amount of chlorindole hydrazide (converted into the original drug) is 1-2 g / mu, the mass concentration of chlorindole hydrazide is 0.00667-0.01333% when applied, and a very good control effect can be achieved.

The invention provides application of mineral oil in improving the control effect of a copper preparation on broccoli black rot and relieving phytotoxicity, and belongs to the technical field of plant disease control. According to the invention, a 200-fold diluent of 99% mineral oil and a 200-800-fold diluent of 30% copper oxychloride suspending agent are compounded according to a ratio of 1: 1 to prepare a compound medicament, and the compound medicament can be applied to prevention and treatment of black rot of broccoli; the prevention and control method comprises the step of spraying the compound pesticide on leaf surfaces. The mineral oil and the copper oxychloride suspending agent are compounded to generate a synergistic effect, so that the prevention and treatment effect on the broccoli black rot is improved, the phytotoxicity caused by copper preparation stress is reduced, and the composition is resistant to rain wash, long in lasting period and suitable for efficient and green prevention and treatment of the broccoli black rot.

The invention belongs to the technical field of plant disease control, and particularly relates to application of amide compounds or agrochemically acceptable salts thereof in preparation of antifungal drugs. The amide compound or the acceptable salt of the amide compound shows remarkable broad-spectrum antibacterial activity on various plant pathogenic fungi such as rhizoctonia solani, tobacco target leaf spot bacteria and magnaporthe oryzae, and has no visible phytotoxicity symptom on plants in an effective concentration range. The action mechanism research shows that the amide compound or the acceptable salt thereof inhibits the growth of fungi through multiple ways: (1) the biological wall and cell membrane structures of the fungi are destroyed to cause the outflow of contents so as to play a bactericidal role; (2) the physiological function of fungal normal cells is interfered, so as to induce programmed death of fungal cells. The invention provides an important reference way for developing a high-efficiency novel agricultural bactericide.

The present invention relates to fluxametamide composition and process of preparation thereof. The present invention more particularly relates to synergistic composition of fluxametamide or its agrochemically acceptable salts thereof, one insecticide selected from diamide group, at least one or more compound selected from insecticides, fungicide and plant health additives, and agrochemically acceptable excipients; and a method of preparing a stable and non-phytotoxic formulation. The present invention further relates to a pesticidal composition for controlling the harmful pests in plants, which can be formulated and is environmentally safe, and which demonstrates high efficacy, and acts for disease resistance management or to delay disease resistance development through engaging multiple modes of action, and increases plant tolerance against insect-pests, mites and, fungal and bacterial diseases, abiotic stress and improves overall health and vigor of the treated plant.

The invention discloses a preparation method and a preservation method of an FA-Se-coated SNCsNPs / starch / gelatin composite film, and the preparation method comprises the following steps: (1) synthesizing selenium nanoparticles (SeNPs) through a chemical method by taking Vc as a reducing agent and sodium selenite as a selenium source; (2) preparing selenium nanoparticles (Se (at) SNCsNPs) loaded on starch nanocrystals (SNC); (3) adding ferulic acid into the product obtained in the step (2) to prepare composite nanoparticles (FA-Se-SNCsNPs) with a synergistic interaction effect; (4) adding the nanoparticles prepared in the steps (1), (2) and (3) as a filler into a starch / gelatin composite matrix membrane solution; and (5) smearing each coating liquid on the Zaosu pears for preservation. According to the method, the stability of the selenium nanoparticles is realized, the oxidation resistance of the selenium nanoparticles is improved, and the phytotoxicity of precipitation or aggregation caused by unstable particles on the Zaosu pears is avoided in the process of prolonging the quality of the harvested Zaosu pears.

The invention discloses a whole-cycle green comprehensive management method for waxberries, and belongs to the technical field of agricultural planting. According to the method, the compound microorganism fertilizer is applied underground, mineral oil is continuously sprayed on the ground in multiple growth stages to prevent and control aphids, whiteflies and scale insects, and multiple biostimulant combinations are accurately sprayed in the key phenological stage to comprehensively improve the quality of leaves and fruits. And the problems of demulsification, flocculation and phytotoxicity of mineral oil caused by water hardness in traditional mixing are effectively solved through an innovative barrel mixing process. According to the method, three technical means are systematically integrated to form a synergistic green management system, the problems that in traditional waxberry planting, chemical pesticide dependence is high, and the contradiction between pest control and quality improvement is prominent are effectively solved, and efficient, high-quality and sustainable development of waxberry production is achieved.

This invention belongs to the field of ecological environment monitoring technology and relates to a multi-level bioindicator method for the effective phytotoxicity of heavy metal-like substances / heavy metals. The method includes the following steps: S1. Obtaining plant samples affected by the soil or water body to be tested; S2. Measuring the activity of superoxide dismutase (SOD), gibberellin (GA), and chlorophyll content in the plant samples; S3. Based on the measured results of SOD activity, plant hormone content, and chlorophyll content, and their changes over time, classifying and assessing the effective phytotoxicity effects of heavy metal-like substances or heavy metals. This invention is the first to propose a unified three-level bioindicator method (SOD activity, GA hormone, and chlorophyll) that can effectively reflect soil pollution levels for typical heavy metal-like substances / heavy metals present in the actual environment, enabling a simpler assessment of the degree of heavy metal pollution in actual soil.

The application relates to the technical field of plant protection, in particular to application of ferroptosis inhibitor-1 in preparation of a toxitant inhibitor of mycotoxin and a pesticide composition. The application finds that the ferroptosis inhibitor-1 can significantly improve the tolerance of plants to mycotoxin poisoning, has the effect of relieving the plants from mycotoxin poisoning, and helps the plants and seeds to normally germinate and grow under the condition of high-concentration mycotoxin.