35 results about "Clothianidin" patented technology

The invention belongs to the technical field of pesticide suspending agents, and particularly discloses a micro-capsule suspension-suspending agent containing chlorine fluorine and clothianidin and a preparation method of the micro-capsule suspension-suspending agent. The microcapsule suspension-suspending agent is prepared from the following raw materials: 11 to 13 percent of lambda-cyhalothrin, 12 to 14 percent of clothianidin, 9.20 to 9.60 percent of a solvent, 3.25 to 3.45 percent of a wall material I, 0.35 to 0.50 percent of protective glue, 2.13 to 2.33 percent of an emulsifier, 1.24 to 1.45 percent of a dispersing agent I, 0.24 to 0.45 percent of a wall material II, 3.90 to 4.10 percent of a dispersing agent II, 2.92 to 3.12 percent of an anti-freezing agent, 0.03 to 0.07 percent of a thickening agent I, 0.45 to 0.55 percent of a thickening agent II, 0.46 to 0.52 percent of a preservative and the balance of water. The microcapsule suspension-suspending agent prepared in the invention has good stability in the storage process, the slow release of effective components is controlled, and the lasting period is prolonged.

The invention relates to the field of pesticides, and particularly discloses a pH-light dual-response nano pesticide and a preparation process thereof. The invention relates to a preparation method of a pH-light dual-response nano insecticide. The preparation method comprises the following steps: adding water into polyethylene glycol, castor oil polyoxyethylene ether and sodium lignin sulfonate to prepare a water phase; the preparation method comprises the following steps: uniformly mixing an efficient cyhalothrin active compound with xylene, and adding diisocyanate to prepare an oil phase; adding the oil phase into the water phase, and adding ethylenediamine, YUS-SC3A, glycerol, xanthan gum, magnesium aluminum silicate and benzoic acid to obtain the lambda-cyhalothrin microcapsule suspending agent. The preparation method comprises the following steps: adding water into YUS-SC3A, uniformly mixing, and adding a clothianidin active compound, glycerol, xanthan gum, magnesium aluminum silicate, AF205 and benzoic acid to obtain a clothianidin suspending agent; mixing the two agents to obtain the nano insecticide, adding the composite dispersant, adding the pre-gel, adding azodiisobutyronitrile, blowing with inert gas, and adding Kathon. By preparing the pH-light dual-response nano insecticide, the insecticidal effect is improved, the generation of drug resistance is avoided, and efficient prevention and control of wheat aphids are realized.

The invention relates to a fluazinam-containing pesticide composition, a seed treatment suspending agent as well as a preparation method and application of the seed treatment suspending agent. The invention provides a fluazinam-containing pesticide composition. The active ingredients of the fluazinam-containing pesticide composition comprise fluazinam, fludioxonil and clothianidin, the mass ratio of the clothianidin to the fluazinam to the fludioxonil is (6-7): (0.4-0.8): (0.2-0.6), and the composition has an excellent synergistic effect. The suspending agent for seed treatment is compounded with a film-forming agent composed of acrylate and polydimethylsiloxane according to a specific proportion, it can be ensured that seed coats are not prone to falling off after being coated, meanwhile, adjustment can be conducted according to environmental adaptability, a coating layer is evenly mixed with a pesticide and pigment, the release time of effective components of pesticides is prolonged, and the pesticide effect is improved. The problem of seed coating fading is effectively solved, and the pesticide composition has an excellent effect in prevention and treatment of agricultural diseases such as peanut root rot, grub, wheat stem rot and aphid.

The application discloses a seed treatment suspension agent containing a stable security agent, and the effective component of the seed treatment suspension agent contains pyraclostrobin, fludioxonil and thiamethoxam, the mass ratio of pyraclostrobin, fludioxonil and thiamethoxam is (1-5):(1-2):(10-100), the effective component is used in an amount of 4-40 wt%, and the stable security agent at least includes ascorbic acid fatty acid ester or its derivative of formula (I), the ascorbic acid fatty acid ester of formula (I) is selected from ascorbic acid laurate, ascorbic acid olivate and ascorbic acid stearate; in the seed treatment suspension agent, the mass ratio of pyraclostrobin and the stable security agent is 100:(0.1-100). The application maintains the seed treatment suspension agent between pH 4 and 9 by adding the stable security agent in the seed treatment suspension agent, reduces the degradation rate of the effective component, reduces the risk of pesticide damage, and has safety to crop seeds.

The application discloses a propiconazole-azoxystrobin- clothianidin seed treatment suspending agent and a preparation method and application thereof, and belongs to the technical field of pesticide preparations; the agent takes propiconazole, azoxystrobin and clothianidin as active ingredients, takes beta-nicotinamide mononucleotide (NMN) as a functional antimicrobial component, and is supplemented with styrene-maleic anhydride copolymer sodium salt, fatty alcohol polyoxyethylene ether, xanthan gum, magnesium aluminum silicate, glycerol, polydimethylsiloxane defoaming agent, sodium benzoate, polyvinyl alcohol and deionized water to prepare the agent. The application is suitable for seed coating treatment for preventing and treating rice false smut, thrips and wheat sharp eyespot and aphids; NMN promotes the accumulation of phenolic compounds in the phloem of plants, and cooperates with clothianidin on the same insecticidal target, thereby significantly improving the prevention and treatment effect on aphids and thrips; the degradation product of NMN promotes the proliferation of beneficial microorganisms in the rhizosphere, improves soil enzyme activity, and realizes soil micro-ecological restoration.

The present invention relates to a method of strengthening crops by applying a pesticidal combination comprising at least as active ingredient (I) isoxtolfenpyrad and as active ingredient (II) thiamethoxam to plant propagation material or plant growth locus in any desired sequence or simultaneously.

The invention belongs to the technical field of agricultural pest control, and particularly relates to a preparation method and application of a Holotrichia diomphalia larva compound luring-insecticidal system. The system is composed of a composite attractant and a clothianidin suspending agent, the composite attractant comprises the following components in percentage by mass: 10% of smell attractant (mixing 2-butenoic acid and 2-phenethyl alcohol according to a ratio of 1: 1), 8% of saccharide and 82% of water, and the clothianidin suspending agent is an effective insecticidal component. According to the compound attractant, two odor attractants, namely 2-butenoic acid and 2-phenethyl alcohol, have a synergistic effect, so that the compound attractant shows a remarkable synergistic effect on larvae of Holotrichia diomphalia, and the attraction activity of the compound attractant is obviously superior to that of a single component. The compound attractant disclosed by the invention effectively attracts larvae to gather in a specific flavor source in a broad-spectrum manner, and has a synergistic effect with a clothianidin suspending agent, so that the insecticidal effect is remarkably improved, the use of chemical pesticides is greatly reduced, the compound attractant is green, pollution-free and residue-free, natural enemies are protected, the environment is protected, and green prevention and control of grubs are realized.

The present invention relates to a dry flowable agricultural composition of nitenpyram, and pymetrozine. More specifically, synergistic dry flowable (DF) insecticidal composition of nitenpyram, pymetrozine along with suitable agrochemical additives, and its preparation thereof.

The invention belongs to the technical field of pesticide disinfestation and sterilization, and particularly discloses a seed treatment suspending agent containing pydiflumetofen (A), benziothiazolinone (B) and clothianidin (C) and application of the seed treatment suspending agent. Wherein the effective components comprise fungicide pydiflumetofen and benziothiazolinone, the insecticide is clothianidin, and the mass ratio of the three effective components is more preferably (1-15): (1-10): (1-20). The three effective components are different in action mode, synergistic in effect and long in lasting period, and can effectively prevent and control wheat basal stem rot and damage of wheat aphids and underground insect grubs, so that the emergence rate of wheat seeds is greatly increased, roots and seedlings are strengthened, and the effect of increasing yield and income is finally achieved.

The invention discloses a sulfur-doped carbon-based confinement composite material as well as a preparation method and application thereof, and belongs to the technical field of sewage treatment. The preparation method comprises the following steps: jointly dispersing biochar, soluble copper salt, soluble iron salt and sodium sulfate into water to obtain a mixed solution A; adjusting the pH value of the mixed solution to 4.8-5.2 by using a pH regulator and a pH buffer agent to obtain a mixed solution B; performing hydrothermal reaction on the mixed solution B, and then filtering, washing, drying and calcining to obtain the sulfur-doped carbon-based confinement composite material. The prepared sulfur-doped carbon-based confinement composite material is low in price, stable in structure and high in catalytic activity. When the catalyst is used for activating persulfate, the decomposition reaction of the persulfate can be accelerated through a free radical and non-free radical synergistic path. When a catalytic oxidation system formed by the catalyst and persulfate is used for degrading the neonicotinoid insecticides in water, the degradation efficiency is high, and the catalyst has a broad-spectrum degradation effect on various neonicotinoid insecticides such as thiamethoxam and clothianidin.

The application belongs to the technical field of pesticide insecticide, and discloses a pesticide composition containing brofenvalerate, which comprises active ingredient A, active ingredient B and active ingredient C; the active ingredient A is brofenvalerate; the active ingredient B is high-efficiency lambda-cyhalothrin; and the active ingredient C is any one of thiamethoxam or thiamethoxam. The pesticide composition can effectively prevent and control various underground pests and seedling stage pests, especially the underground pests and seedling stage pests of peanuts and corns, and can enhance the stress resistance of plants, reduce the amount of pesticide, prolong the effective period, and has no pesticide damage to crops.

The invention discloses a method for detecting clothianidin and thiamethoxam in ginger based on quantum dot microsphere fluorescence immunochromatography, and belongs to the technical field of compound detection. The method comprises the following steps: (a) extracting a ginger sample by adopting an acetonitrile solution, and diluting supernate by using a PBS (Phosphate Buffer Solution) to obtain a solution to be detected; (b) dropwise adding a solution to be detected onto the sample pad of the test strip, incubating, reading a fluorescence signal by using a quantum dot microsphere fluorescence immunoassay analyzer, respectively obtaining signal intensities and ratios of detection lines and quality control lines of clothianidin and thiamethoxam, correspondingly substituting the ratios into a clothianidin and thiamethoxam standard curve, and calculating to obtain the content of clothianidin and thiamethoxam. The method disclosed by the invention has the characteristics of uniform sample pretreatment, simplicity, convenience and rapidness in detection, high sensitivity, capability of simultaneously providing quantitative results of two items and the like, and is suitable for on-site screening of large-batch samples.

The invention relates to a pesticide composition containing a nicotine compound and application of the pesticide composition. The pesticide composition is prepared from flufenican amide, acetamiprid, thiamethoxam or clothianidin and the like. The pesticide composition has an obvious synergistic effect, the usage amount of pesticides is reduced, the residual amount of the pesticides on crops is reduced, and the environmental friendliness is enhanced. The pesticide composition disclosed by the invention has an excellent control effect on target pests such as chilo suppressalis, plutella xylostella, green peach aphid, beet armyworm, ostrinia nubilalis, thrips, flea beetle, spider mites, brown planthopper or liriomyza sativae.

This invention relates to a method of controlling, limiting or preventing an infestation of a plant by Oomycetes, which comprises applying to propagation material of said plant, a pesticidal combination comprising a phosphorus-based compound as active ingredient A, and an active ingredient B selected from acibenzolar-S-methyl, fludioxonil, fluxapyroxad, inpyrfluxam, mefentrifluconazole, prothioconazole, sedaxane, triticonazole, oxathiapiprolin, fluoxapiprolin, azoxystrobin, difenoconazole, fluopyram, ipconazole, metyltetraprole, silthiofam, dimethomorph, thiophanate-methyl, natamycin, benzovindiflupyr, pydiflumetofen, picarbutrazox, isocycloseram, cyclobutrifluram, broflanilide, thiamethoxam, imidacloprid, clothianidin, cyantraniliprole, chlorantraniliprole, tetraniliprole, fipronil, and any mixture thereof.

The invention discloses a glow discharge treatment device for degrading clothianidin in water and a treatment method thereof. According to the device, a beaker added with a rotor is arranged above a magnetic stirrer, a tungsten steel rod is suspended above the beaker through an iron support, the tungsten steel rod is connected with a high-voltage glass glaze resistor through a wire, and the high-voltage glass glaze resistor is connected with a high-voltage direct-current power supply through a wire. The treatment method comprises the following steps: putting a clothianidin solution to be treated into a beaker, adding a rotor, adjusting the rotating speed of a magnetic stirrer, adjusting the distance between the vertex of the tip of a tungsten steel bar electrode and the upper surface of wastewater, adjusting the voltage and current of a high-voltage direct-current power supply, and breaking down air by high-voltage direct current to irradiate active ions to the water surface for degradation treatment. According to the device, direct-current-driven low-temperature plasma glow discharge is optimized, the positive electrode and the negative electrode are suspended above the liquid level, clothianidin in water is effectively degraded, the degradation rate can reach 99%, anode loss is avoided, and the device is simple in structure, easy and convenient to operate, low in manufacturing and operating cost, smaller in energy consumption and better in treatment effect.

The invention discloses a synthesis process and a synthesis device of clothianidin, and relates to the technical field of clothianidin synthesis, the synthesis device comprises a four-in-one reactor and a preheating cylinder, the four-in-one reactor comprises a stirring mechanism, a vacuum mechanism, a nitrogen valve, a charging valve and a jacket and filtering mechanism, the nitrogen valve is installed on the outer side of the four-in-one reactor, and the charging valve is installed on the outer side of the four-in-one reactor; one end of the jacket is fixedly connected with a third pipeline, the other end of the jacket is provided with a first pipeline, the outer side of the preheating cylinder is fixedly sleeved with a preheating sleeve, and the interior of the preheating cylinder is rotationally connected with a rotating column through a bearing. According to the present invention, the 1, 5-dimethyl-2-nitroiminohexahydro-1, 3, 5-triazine is adopted to replace the 1, 5-dimethyl-2-nitroiminohexahydro-1, 3, 5-triazine to prepare the clothianidin, such that the reaction yield can be improved by more than 10%, and the yield is stable; side reactions are reduced, and the product has few impurities and high purity.

Pesticidal mixtures comprising as active compounds A) the ethylsulfone compound of formula (I) and B) at least one further compound B selected from fipronil, lambda-cyhalothrin, bifenthrin, tefluthrin, alpha-cypermethrin, thiamethoxam, clothianidin, acetamiprid, imidacloprid, dinotefuran, tri-flumezopyrim, fenmezoditiaz, spinosad, spinetoram, abamectin, afidopyropen, indoxacarb; met-aflumizone, spiropidion, spidoxamat, chlorantraniliprole, cyantraniliprole, tetraniliprole, cyclaniliprole, broflanilide, isocycloseram; dimpropyridaz; and difenoconazole, prothioconazole, flutriafol, ipconazole, tebuconazole, mefentrifluconazole, triticonazole, fluoxytioconazole, metyltetraprole, azoxystrobin, trifloxystrobin, pyraclostrobin, sedaxane, penflufen, fluopyram, fluxapyroxad, pydiflumetofen, isoflucypram, cyclobutrifluram, oxathiapiprolin, fluoxapriprolin, metalaxyl, picarbutrazox, fludioxonil, thiophanat-methyl; methods and use of these mixtures for combating invertebrate pests such as insects, arachnids or nematodes in and on plants, and for protecting such plants being infested with pests, especially also for protecting plant propagation material as like seeds.

This invention relates to a method of controlling, limiting or preventing an infestation of a plant by Oomycetes, which comprises applying to propagation material of said plant, a pesticidal combination comprising a phosphorus-based compound as active ingredient A, and an active ingredient B selected from acibenzolar-S-methyl, fludioxonil, fluxapyroxad, inpyrfluxam, mefentrifluconazole, prothioconazole, sedaxane, triticonazole, oxathiapiprolin, fluoxapiprolin, azoxystrobin, difenoconazole, fluopyram, ipconazole, metyltetraprole, silthiofam, dimethomorph, thiophanate-methyl, natamycin, benzovindiflupyr, pydiflumetofen, picarbutrazox, isocycloseram, cyclobutrifluram, broflanilide, thiamethoxam, imidacloprid, clothianidin, cyantraniliprole, chlorantraniliprole, tetraniliprole, fipronil, and any mixture thereof.

The invention discloses a pesticide composition as well as a preparation method and application thereof, and relates to the technical field of nano pesticides. According to the invention, vitexin and gentiopicroside are used as synergists, and vitexin and gentiopicroside and a chlorantraniliprole-clothianidin compound are used as raw materials to prepare the pesticide composition. Through combination of the chemical pesticide preparation and the plant source synergist, synergistic interaction of multiple action targets and multiple action modes is achieved, efficient prevention and control of peanut underground pests are achieved, and meanwhile the drug resistance risk generated by using a single agent can be avoided. According to the pesticide composition with the microcapsule structure prepared by the invention, the stability of effective components can be improved; the slow release of the effective components can also be realized. In addition, vitexin and gentiopicroside are compounded to serve as the synergist, and the composition has a combined synergistic effect on improvement of prevention and control of underground pests.

This invention discloses a non-competitive lateral flow immunoassay method based on dual-signal mode of AIE nanoparticles, belonging to the field of agricultural product detection technology. This invention uses an organic solvent swelling method to prepare PSNPs@AIE. 650 Hydrophilic AIE nanoparticles were used to label anti-immune complex peptides (AICPs) with streptavidin-biotin system via an active esterification method to obtain PSNPs@AIE. 650 @AICP immunorecognition probe; Construct a dual-signal non-competitive lateral flow immunochromatographic system for the detection of thiamethoxam residues in agricultural products. This invention achieves colorimetric + fluorescence dual-signal readout, with a colorimetric visualization detection limit of 1.0 ng / mL and a quantitative detection limit of 0.45 ng / mL; a fluorescence visualization detection limit of 0.25 ng / mL and a quantitative detection limit of 0.23 ng / mL. It has the advantages of high sensitivity, strong specificity, rapid portability, and resistance to matrix interference, effectively solving the problem of insufficient sensitivity in traditional colloidal gold lateral flow immunoassay, and is suitable for rapid on-site detection of small molecule pesticide residues in agricultural products.

The application belongs to the technical field of pesticide suspending agent, and specifically discloses a micro-capsule suspending-suspending agent containing chlorfluazuron and clothianidin and a preparation method thereof. The micro-capsule suspending-suspending agent containing chlorfluazuron and clothianidin comprises the following raw materials: 11-13% of high-efficiency chlorfluazuron, 12-14% of clothianidin, 9.20-9.60% of solvent, 3.25-3.45% of wall material one, 0.35-0.50% of protective glue, 2.13-2.33% of emulsifier, 1.24-1.45% of dispersant one, 0.24-0.45% of wall material two, 3.90-4.10% of dispersant two, 2.92-3.12% of antifreeze, 0.03-0.07% of thickening agent one, 0.45-0.55% of thickening agent two, 0.46-0.52% of preservative, and water supplement. The micro-capsule suspending-suspending agent prepared in the application has good stability during storage, controls slow release of effective components, and prolongs the effective period.

This pest control composition contains a component (1) and a component (2), wherein: the component (1) is an isoxazoline-based or metadiamide-based compound; and the component (2) is a phenylpyrazole-based compound, a compound acting as a mitochondrial electron transfer system complex III inhibitor, a compound acting as a glutamic-acid-activated chlorine ion channel allosteric modulator, a compound acting as a nicotinic acetylcholine receptor competitive modulator, a compound acting as a chord organ TRPV channel modulator, a compound acting as an acetyl CoA carboxylase inhibitor, a pyrethroid-based compound, benzpyrimoxan, fluhexafon, tyclopyrazoflor, indazapyroxamet, tiapyrachlor, flupyroxystrobin, or cybenzoxasulfyl.

The invention relates to a pesticide composition for preventing and treating grubs and a suspending agent. The pesticide composition comprises a combination of tetratolfenpyrad and at least one of phoxim, bifenthrin and clothianidin. The pesticide composition can generate a synergistic effect when being used for preventing and treating scarab. Furthermore, the vitamin P and / or ferric phosphate can increase the pesticide effect of the pesticide composition in the process of preventing and treating scarab shells. Furthermore, when the pesticide composition is prepared into the suspending agent, the suspending rate of the suspending agent can be improved by using the synthetic plant ester and / or glutamic acid, namely, the stability of the suspending agent is improved.

The invention provides a composition containing carbosulfan, clothianidin and fludioxonil and application of the composition. The composition is prepared from carbosulfan, clothianidin and fludioxonil which serve as effective components. The effective components in the pesticide composition disclosed by the invention have a relatively good synergistic effect, and the pesticide composition has a very good application prospect.

The invention belongs to the technical field of agricultural pest control, and particularly discloses a seed treatment agent containing sedaxane (A), benziothiazolinone (B) and clothianidin (C) and application of the seed treatment agent. The seed treatment agent is composed of effective components including sedaxane, benziothiazolinone and clothianidin and auxiliaries allowed to be added in agricultural production, can be used in a seed coating or seed dressing mode, and can effectively prevent and control three soil-borne diseases including potato black scurf, ginger blast and garlic root rot and soil insects including grubs, root-knot nematodes, garlic maggots and the like corresponding to three crops. The composition has the advantages of lasting control effect, high safety, long lasting period, no phytotoxicity to crops and the like. The composition can effectively solve the problems of narrow control range, enhanced pest and disease resistance and the like of a current single agent, remarkably improves the crop yield and quality, and is suitable for large-scale agricultural popularization and application.

This invention discloses an ELISA method and its application based on liposome nanovesicles, belonging to the field of biotechnology. The invention prepares HRP-coated and biotinylated liposome nanovesicles using phospholipids, sterol derivatives, and biotinylated polyethylene glycol phospholipids as raw materials. These nanovesicles are highly sensitive to acidic environments of pH 3-6, specifically recognizing streptavidin. Under acidic conditions, they cleave to release HRP and catalyze substrate color development. Using these nanovesicles as tracers, an ELISA is established based on the principle of antigen-antibody competitive binding to achieve the detection of thiamethoxam residues, a neonicotinoid insecticide. The method of this invention has a detection limit as low as 0.24 µg / L for thiamethoxam, exhibiting high sensitivity, simple operation, economy, speed, and high-throughput screening capabilities. It is suitable for the detection of thiamethoxam residues in agricultural products, soil, and water bodies, solving the technical problem of low sensitivity in traditional ELISA methods.

The invention discloses a method for rapidly synthesizing a key intermediate 2-chloro-5-methylthiazole of thiamethoxam, clothianidin and imidaclothiz based on a continuous flow method. According to the method, 2-amino-5-methylthiazole is taken as a raw material, and efficient synthesis of 2-chloro-5-methylthiazole is realized through a microreactor and a tubular reactor in the presence of sodium nitrite and a hydrochloric acid aqueous solution under mild conditions. According to the method, a continuous flow strategy is adopted to overcome the defects of potential production safety hazards, reduced reaction efficiency and the like caused by strong heat release in the diazonium salt generation process, expensive reagents are not needed, solvents and energy are saved, and a feasible solution is provided for industrial production of 2-chloro-5-methylthiazole.

The invention provides a method for preparing 1, 5-dimethyl-2-nitryl imido-hexahydro-1, 3, 5-triazine from clothianidin wastewater, and relates to the technical field of chemical preparation, the method comprises the following steps: Sp1, preparing a reaction liquid 1: standing clothianidin acid wastewater for layering, taking the upper-layer acid wastewater, and carrying out reduced pressure distillation to obtain an acid distillate and a mother solution; and dropwise adding liquid caustic soda into the mother liquor to adjust the pH value to be neutral, then continuously dropwise adding the liquid caustic soda to adjust the pH value to be alkaline, and meanwhile, heating to absorb ethylamine to obtain a reaction solution 1, and the method significantly reduces the wastewater generation amount, the acid strength and the environmental risk. According to the method, the clothianidin acid wastewater is subjected to targeted treatment, ethylamine in the clothianidin acid wastewater is effectively recovered and directly used for synthesis of downstream triazine compounds, the defect that a large amount of high-salinity wastewater is generated in traditional neutralization treatment is overcome, the direct discharge amount of strong-acidity wastewater is reduced, the risks of water acidification and ammonia nitrogen pollution are reduced, and the method is suitable for industrial production. The environment protection is facilitated.

The application provides a composition containing prothioconazole, clothianidin and mefenoxam and application thereof. The dosage form of the composition is a suspension seed coating agent, and the suspension seed coating agent contains the following ingredients in the weight percentage: 0.5-3% of prothioconazole, 5-15% of clothianidin, 0.5-3% of mefenoxam, 4-16% of wetting dispersant, 0.2-2% of thickening agent, 2-8% of film forming agent, 0.1-0.5% of preservative, 1-6% of antifreeze, 0.2-1.2% of defoaming agent, 0.1-0.5% of pigment and deionized water to make up 100%. The suspension seed coating agent provided by the application has excellent preparation performance, can significantly improve the control effect of the pesticide on pests and diseases, can effectively reduce the use dosage of the active ingredient, can reduce environmental pollution and can ensure food safety.

The invention discloses a seed treatment agent for preventing and treating garlic bulb rot, and belongs to the technical field of agricultural biology. The active ingredients of the seed treatment agent comprise metalaxyl-M, fludioxonil and clothianidin. Metalaxyl-M and fludioxonil are compounded to respectively show extremely high inhibitory activity on two main pathogenic bacteria, namely phytophthora and fusarium, causing garlic bulb rot, and after compounding, antagonism is avoided, so that the metalaxyl-M and fludioxonil can synergistically exert prevention and treatment effects. The treatment agent can be prepared into dosage forms such as a suspended seed coating and the like, and is used for seed dressing or coating treatment of garlic seeds. Field experiments show that the seedling death rate and the bulb rotting incidence rate can be remarkably reduced, yield increase is promoted, and the method is safe to seeds. The invention fills the blank of the special prevention and treatment medicament for garlic bulb rot, and has important application value.