77 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 technical field of seed treatment suspending agents. The invention discloses a seed treatment suspending agent containing clothianidin, prothioconazole and fludioxonil as well as a preparation method and application of the seed treatment suspending agent. The seed treatment suspending agent is prepared from the following raw materials: clothianidin, prothioconazole, fludioxonil, a bactericidal synergist, a dispersing agent, a wetting dispersing agent, a thickening agent, a preservative, an anti-freezing agent, a film-forming agent, warning coloration, a de-foaming agent and de-ionized water. The seed treatment suspending agent containing clothianidin, prothioconazole and fludioxonil prepared by the invention is good in suspending performance, low-temperature stability and heat storage stability. The application amount and the harm to the environment are reduced. The invention also relates to application of the seed treatment suspending agent in prevention and treatment of diseases and insect pests.

The invention discloses sustained-release granules containing clothianidin and chlorantraniliprole as well as a preparation method and application of the sustained-release granules, and relates to the field of pesticides, the sustained-release granules comprise clothianidin mother liquor and chlorantraniliprole mother powder; wherein the granules are prepared by mixing chlorantraniliprole mother powder and clothianidin mother liquor according to the weight ratio of 1: (0.1-0.25), and the clothianidin mother liquor comprises the following components in parts by weight: 0.1-10 parts of clothianidin, 0.1-10 parts of an organic solvent, 0.1-10 parts of urea resin and the like; the chlorantraniliprole mother powder comprises the following components in parts by weight: 0.1-10 parts of chlorantraniliprole, 1-20 parts of humic acid fertilizer and the like. According to the clothianidin-chlorantraniliprole sustained-release granules prepared by combining specific types of urea-formaldehyde resin and the acid solution, the problems that clothianidin is easily dissolved in water in soil and runs away along with the water body, and the long-acting effect and the control effect are greatly reduced are solved.

The invention discloses a nondestructive testing method and system for pesticide residues of field drinking chrysanthemum, and the method comprises the steps: obtaining hyperspectral reflectivity data of leaves of the drinking chrysanthemum in a key growth period after pesticide drip irrigation, and carrying out data preprocessing; a quantitative estimation model of the leaf hyperspectral reflectivity and the leaf clothianidin actually measured content is constructed through statistical modeling; determining a regression model equation of the clothianidin content in the leaves and inflorescence by using actually measured data, and calculating the inflorescence residue level according to a leaf detection result; a drinking chrysanthemum clothianidin residue early warning threshold value is set, the hyperspectral reflectivity of drinking chrysanthemum leaves is collected through hyperspectral equipment and input into the model, and drinking chrysanthemum clothianidin residue early warning is achieved; according to the method, early warning of pesticide residues is achieved before chrysanthemum harvesting, especially field rapid screening and quantitative analysis of novel pesticides such as clothianidin are achieved, the technical blank of an existing hyperspectral technology in pesticide residue detection and application of medicinal plants is filled up, and the chrysanthemum quality safety guarantee level is improved.

The invention discloses a nucleic acid aptamer capable of simultaneously identifying neonicotinoid pesticide imidacloprid and clothianidin and application of the nucleic acid aptamer. The nucleic acid aptamer is XQ-20 or XQ-20.1, and the nucleotide sequence of the XQ-20 is as shown in SEQ ID NO.2; the nucleotide sequence of the XQ-20.1 is as shown in SEQ ID NO. 1. The nucleic acid aptamer disclosed by the invention can be simultaneously combined with imidacloprid and clothianidin in a high affinity manner, and has the advantages of low immunogenicity, batch synthesis, good biocompatibility and stability, small molecular weight, easiness in storage and the like.

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 present invention belongs to the technical field of pesticide insecticides and discloses an insecticidal composition containing a nicotinoid insecticide and its use. The insecticidal composition comprises an active ingredient A and an active ingredient B, wherein the active ingredient A is isoflualanam, and the active ingredient B is a nicotinoid insecticide, wherein the nicotinoid insecticide is any one of sulfluramid, sulfoxaflor, clothianidin, thiamethoxam, acetamiprid, thiacloprid, imidacloprid, dinotefuran, nitenpyram, and flupyradone, and the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 45:1. The insecticidal composition of the present invention has the advantages of significant synergistic effect, delayed resistance, and low drug cost.

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 present invention relates to a flea and rodenticide and a preparation method thereof, belonging to the technical field of pesticides. A flea and rodenticide of the present invention is composed of the following components in percentage by weight: active ingredient A 0.002 - 0.01%, active ingredient B 0.0002 - 0.01%, additive 1 - 60%, cereal 0 - 80%, auxiliary material 0.5 - 60%; the active ingredient A is flocoumafen; the active ingredient B is dinotefuran, clothianidin or chlorantraniliprole; the weight ratio of the active ingredient A to the active ingredient B is 1:5 - 50:1. The present invention makes the palatability of the bait excellent through compounding and synergism, and its daily average consumption is increased by 1.5 - 2 times, greatly increasing the utilization rate of rodenticide and saving manpower and material resources; in addition, the rodenticide can also kill the fleas parasitic on the rats while killing the rats, thereby reducing the spread of diseases and filling the market gap.

The invention relates to the technical field of biopesticides, and provides a slow-release insecticide for landscaping and a preparation method thereof.The slow-release insecticide is prepared from, by weight, 5%-20% of clothianidin, 1%-5% of cyromazine, 1.5%-2.5% of metalaxyl hymexazol, 0.8%-1.2% of humic acid, 5%-8% of chitosan, 3%-4% of polylactic acid, 1.5%-2.5% of nanometer titania, 0.5%-0.8% of plant source auxiliaries and the balance water; compared with existing insecticides, a'stepped release 'system (clothianidin rapidly controls insects in the early stage and cyromazine is long-acting and stable in the later stage) is formed through a nano slow release technology (chitosan nanoparticles and PLA microspheres), synergistic prevention and control of overground and underground insects are effectively achieved, the instantaneous concentration of the insecticide in the environment is reduced, and the resistance selection pressure is reduced.

The invention discloses a method for determining clothianidin and metabolite residues of clothianidin in soil. The method comprises the following steps: step 1, preparing a clothianidin standard stock solution and a standard stock solution of metabolites (Z)-1-methylene-2-nitroguanidine and (2-chlorothiazol-5-y1) metyl)-3-metyl guanidine, and preparing the clothianidin standard stock solution and the standard stock solution of the metabolites (Z)-1-methylene-2-nitroguanidine and (2-chlorothiazol-5-y1) metyl-3-metyl guanidine; 2, preparing a solvent mixed standard working solution according to the standard stock solution in the step 1; 3, the solvent mixed standard working solution is added into the soil blank extracting solution, and a matrix mixed standard working solution is prepared; and 4, weighing a soil sample to be detected, carrying out pretreatment, and detecting by adopting a liquid chromatography-tandem mass spectrometry method. According to the technical scheme provided by the invention, the residual quantity of the clothianidin and the metabolites (Z)-1-methyl-2-nitroguanine and the residual quantity of the 1-((2-chlorothiazol-5-y1)-3-methylguanine of the clothianidin in the soil can be rapidly, simply, conveniently and accurately measured.

The invention discloses a preparation method and application of a clothianidin fluorescent test strip, belongs to the technical field of agricultural detection, and solves the problems that the existing bombyx mori pesticide poisoning detection sensitivity is low, and the clothianidin residue concentration cannot be quickly judged. According to the method, a nitrocellulose membrane is prepared, a detection line is coated with a clothianidin-BSA antigen, and a quality control line is coated with an anti-mouse IgG antibody; when the fluorescent pad is prepared, carboxylated fluorescent microspheres and an anti-clothianidin antibody are coupled to form a labeled probe; when the test strip is assembled, the nitrocellulose membrane, the fluorescent pad, the sample pad and the absorbent paper are stacked and fixed on the bottom plate to form a chromatography structure. Clothianidin in a sample is combined with the labeled probe to form an immune complex, chromatography migrates to the detection line to be competitively combined with clothianidin-BSA antigen, the uncombined probe is captured and develops color, and the quality control line develops color through an anti-mouse IgG antibody. The test strip is used for rapidly detecting clothianidin residues in mulberry leaves and bombyx mori bodies, the sensitivity reaches 0.02 mg / L, pesticide poisoning events can be effectively prevented, and safe production of the sericulture industry is guaranteed.

The invention discloses an insecticide as well as a preparation method and application thereof, and relates to the technical field of pesticide preparation. According to the invention, the bifenthrin-clothianidin compound, the rhizoma polygonati essential oil and the sophoricoside are combined as effective components of the insecticide, and chemical sources and plant sources are combined, so that the control effect of the insecticide on potato underground pests can be improved, the drug resistance risk of the pests is reduced, and the yield and quality of potatoes can be improved. The rhizoma polygonati essential oil and the sophoricoside are compounded, so that the synergistic effect on improving the insecticidal effect of the insecticide is achieved. Besides, gelatin is adopted as a wall material and insecticidal effective components are adopted as a core material to prepare the insecticide with a microcapsule structure, so that the lasting period of the pesticide effect can be prolonged, and the insecticide is suitable for underground pests living in soil and having a relatively long active period.

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 relates to the technical field of pesticide residue detection, in particular to a method for rapidly screening neonicotinoid and macrolide pesticide residues in vegetables through trichogramma chilonis. The 10% lethal effect condition of the trichogramma on nine kinds of common neonicotinoid or macrolide pesticides such as imidacloprid, acetamiprid, dinotefuran, thiamethoxam, clothianidin, nitenpyram, abamectin, methylamino abamectin benzoate and ivermectin is determined; acute toxic effects and action rules of nine common neonicotinoid or macrolide pesticides in vegetables on trichogramma are researched; according to the method, the 1-hour action dose of the pesticide is determined by adopting 10% of death effect, the detection limit of the trichogramma biotoxicity method on the residues of the 9 pesticides in the vegetables is calculated by combining the quality and surface area of the vegetables, and finally, the common neonicotinoid or macrolide pesticide residues in the vegetables are rapidly screened by adopting the trichogramma biotoxicity limit value determination method.

The invention provides a medicine composition for preventing and treating corn diseases and insect pests and application and a prevention and treatment method thereof, and particularly belongs to the technical field of disease and insect pest prevention and treatment. The invention provides a medicine composition for preventing and treating corn diseases and insect pests. The medicine composition comprises a first prevention and control medicine, a second prevention and control medicine, a third prevention and control medicine and a fourth prevention and control medicine, the first prevention and control drug is prepared from a macroelement water-soluble fertilizer, compound sodium nitrophenolate, emamectin benzoate and chlorantraniliprole; the second prevention and control drug is prepared from ethephon, brassinolide, a macroelement water-soluble fertilizer, emamectin benzoate and chlorantraniliprole; the third prevention and control drug is prepared from tebuconazole, pyraclostrobin, etoxazole, abamectin, a phosphate fertilizer and a nitrogen fertilizer; the fourth prevention and control medicine is prepared from pyraclostrobin, epoxiconazole, etoxazole, abamectin, bifenthrin, clothianidin, compound sodium nitrophenolate, phosphate fertilizer and nitrogen fertilizer. The medicine composition has the effects of increasing yield, preventing diseases, preventing insect pests and preventing lodging.

The invention belongs to the field of chemical detection, and relates to a preparation method and application of a CdSe / ZnS quantum dot labeled double-probe fluorescence immunochromatography test strip. The test strip comprises a bottom plate, a nitrocellulose membrane, a sample pad, a conjugate pad and a water absorption pad, the nitrocellulose membrane is located above the bottom plate, the sample pad and the conjugate pad are sequentially arranged on the bottom plate on the left side of the nitrocellulose membrane, and the water absorption pad is arranged on the bottom plate on the right side of the nitrocellulose membrane; quantum dots with two wavelengths are distributed on the conjugate pad and are respectively marked with two probes of mouse antibodies of two pesticides, and a thiamethoxam antigen, a clothianidin antigen and a goat anti-mouse secondary antibody strip are further distributed on the nitrocellulose membrane. The invention further provides a visual and rapid detection test strip suitable for quantitatively detecting the residual quantity of thiamethoxam and clothianidin in spinach, the cross reaction is lower than 10% or below of the rapid detection requirement, and the visual and rapid detection test strip has market application and popularization value.

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 relates to the technical field of sanitary pest killing, in particular to a sanitary pest control concentrated composition and application thereof. The sanitary pest control concentrated composition is prepared from the following components in percentage by mass: 10-50% of an active component A and an active component B, 10-40% of a feeding accelerant, 5-15% of a macromolecular humectant, 5-15% of a macromolecular thickener and other auxiliary materials, the active component A is selected from one or more of clothianidin, dinotefuran and sulfoxaflor; and the active component B is selected from one or more of chlorfenapyr, chlorfenapyr bisamide, metafluzamide and tetrachlorantraniliprole. According to the sanitary pest control concentrated composition, through reasonable compounding of the active components and performance combination of the preferable feeding accelerant, the preferable high-molecular humectant and the preferable high-molecular thickening agent, increase of effective components retained on the surface and improvement of surface moisture retention and palatability are achieved, the quick-acting and long-term persistent effect of the product is obviously improved, and the sanitary pest control concentrated composition is suitable for being applied to the field of agricultural products. The killing effect of the effective components on target pests is fully exerted.

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 invention provides a prothioconazole, flutolanil and clothianidin seed treatment suspending agent and a preparation method thereof. According to the seed treatment suspending agent, a compound thickening agent is used and is matched with a specific anti-freezing agent, and proper raw material adding sequence and preparation steps as well as process parameters such as shearing time and grinding temperature are determined, so that the conditions of huddling or caking, poor preparation stability, poor film-forming property and the like which are easy to occur in the preparation process of the seed treatment suspending agent are avoided; the method is suitable for large-scale industrial production. The seed treatment suspending agent disclosed by the invention is good in stability, can be used for preventing and treating wheat root rot and wheat aphids, and is remarkable in pesticide effect.

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.

The application discloses an insecticide, a preparation method and application thereof, and relates to the technical field of pesticide preparation. The application combines bifenthrin-thiamethoxam compound, yellow ginseng essential oil and sophora glycoside as effective components of the insecticide, and the combination of the chemical source and the plant source can not only improve the control effect of the insecticide on the underground pests of potatoes, reduce the risk of pesticide resistance of the pests, but also improve the yield and quality of the potatoes. The yellow ginseng essential oil and the sophora glycoside have a synergistic effect on improving the insecticidal effect of the insecticide. In addition, the application adopts gelatin as wall material and insecticidal effective components as core material to prepare the insecticide with a microcapsule structure, so that the insecticide can prolong the effective period, and is suitable for the underground pests living in the soil and having a long activity period.

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.