A pesticide composition containing chlorfenapyr and its application

Abstract

The present invention belongs to the field of pesticides and insecticides, and relates to a pesticide composition containing chlorfenapyr and its use. The pesticide composition comprises a compound of formula (I) and chlorfenapyr, and the mass ratio of the compound of formula (I) to chlorfenapyr is 1:30 to 28:1. The composition of the present invention has the advantages of enhancing synergy, reducing resistance, and being safe for crops. The pesticide composition can be used to prevent and control agricultural and forestry pests and sanitary pests.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticides, and particularly relates to a pesticide composition containing chlorfenapyr and application thereof. Background Art

[0002] Chlorfenapyr is a new type of pyrrole compound, a highly effective insecticide and acaricide developed by the American Cyanamid Company in the late 1980s. The CAS number is 122453-73-0. Its mechanism of action is that after insects eat or come into contact with chlorfenapyr, it is oxidized and metabolized into a compound with insecticidal activity in the insect body, and then acts on the mitochondria of the insect cells, and acts through the multifunctional oxidase in the insect body, mainly inhibiting the conversion of adenosine diphosphate (ADP) to adenosine triphosphate (ATP), while adenosine triphosphate stores the energy necessary for cells to maintain their life functions, and eventually leads to the death of pests. The drug has stomach poison and contact killing effects. It has strong permeability on the leaf surface, has a certain systemic effect, and has the characteristics of a wide insecticide spectrum, high prevention effect, long-lasting effect, and safety.

[0003] The compound of formula (I) is a methoxyacrylate insecticide with a CAS number of 114077-75-7 and a chemical structure of:

[0004]

[0005] In the agricultural production process, the control of various types of harmful insects mainly relies on the application of a large number of pesticides and insecticides. The large-scale and frequent irrational use of pesticides and insecticides has led to the continuous enhancement of the resistance of harmful insects, which has caused more serious damage to crops and made prevention and control more difficult. By mixing two or more pesticides with different mechanisms of action, different pests can be controlled at the same time, the effectiveness of the pesticides can be improved, and the generation of pest resistance can be reduced.

[0006] In addition, in the prior art, there is no specific disclosure of the technical solution of the composition containing the compound of formula (I) and chlorfenapyr. Summary of the invention

[0007] The purpose of the present invention is to provide a pesticide composition containing chlorfenapyr which has the advantages of enhancing synergy, reducing resistance and being safe for crops.

[0008] To achieve the above object, the technical solution adopted by the present invention is: a pesticide composition containing chlorfenapyr, the pesticide composition comprising active ingredient A and active ingredient B, the active ingredient A is a compound of formula (I)

[0009] The active ingredient B is chlorfenapyr, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 28:1;

[0010] Furthermore, the mass ratio of the compound of formula (I) to chlorfenapyr is 1:30, 1:20, 1:8, 1:4, 3:10, 1:2, 3:5, 5:4, 6:1, 20:1, 28:1;

[0011] Furthermore, the mass ratio between the active ingredient A and the active ingredient B is 1:20 to 20:1;

[0012] Furthermore, the mass ratio of the compound of formula (I) to chlorfenapyr is 1:20, 1:8, 1:4, 3:10, 1:2, 3:5, 5:4, 6:1, 20:1;

[0013] Furthermore, the mass ratio between the active ingredient A and the active ingredient B is 1:8 to 6:1;

[0014] Furthermore, based on the total mass of the pesticide composition being 100 wt%, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 0.5% to 90%;

[0015] Furthermore, based on the total mass of the pesticide composition being 100 wt%, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 10% to 60%;

[0016] Furthermore, based on the total mass of the pesticide composition as 100wt%, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 26%, 30%, 32%, 40%, 52%, 60%;

[0017] Furthermore, the pesticide composition also includes an adjuvant, and the adjuvant includes a carrier and an adjuvant;

[0018] Furthermore, the carrier is one or more of water, solvent or filler;

[0019] Furthermore, the carrier is deionized water;

[0020] Further, the solvent is selected from a mixture of one or more of N,N-dimethylformamide, cyclohexanone, toluene, xylene, dimethyl sulfoxide, methanol, ethanol, trimethylcyclohexanone, N-octylpyrrolidone, ethanolamine, triethanolamine, isopropylamine, N-methylpyrrolidone, propanol, butanol, ethylene glycol, diethylene glycol, ethylene glycol methyl ether, butyl ether, ethanolamine, isopropylamine, ethyl acetate or acetonitrile;

[0021] Furthermore, the filler is selected from a mixture of one or more of kaolin, diatomaceous earth, bentonite, attapulgite, white carbon black, starch or light calcium carbonate;

[0022] The auxiliary agent includes at least one surfactant, and other functional auxiliary agents such as antifreeze, thickener, stabilizer, disintegrant, defoamer, sustained-release agent, binder, etc. may be added according to different usage occasions and requirements;

[0023] The surfactant is selected from one or more of an emulsifier, a dispersant, a wetting agent, a dispersion medium or a penetrant;

[0024] The above-mentioned surfactant is a single agent or a compound preparation of a common nonionic surfactant or anionic surfactant; the other functional additives are selected from one or more of antifreeze, thickener, stabilizer, disintegrant or defoamer;

[0025] Further, the emulsifier is selected from Nongru 500# (calcium alkylbenzene sulfonate), OP series phosphate ester (surfactant phosphate ester), 600# phosphate ester (phenylphenol polyoxyethylene ether phosphate ester), styrene polyoxyethylene ether wetting agent salt, alkyl diphenyl ether disulfonic acid magnesium salt, triethanolamine salt, Nongru 400# (benzyl dimethylphenol polyoxyethyl ether), Nongru 700# (alkylphenol formaldehyde resin polyoxyethyl ether), Ningru 36# (phenylethylphenol formaldehyde resin polyoxyethyl ether), Nongru 1600# (phenylethylphenol polyoxyethyl polypropylene ether), ethylene oxide-propylene oxide block copolymer, OP series (surfactant), BY series (castor oil polyoxyethylene ether), Nongru 33# (alkylaryl polyoxyethylene polyoxypropylene ether), Span series (sorbitan monostearate), Tween series (sorbitan fatty acid ester polyoxyethylene ether) or AEO series (fatty alcohol polyoxyethylene ether) One or more of the mixture;

[0026] Further, the dispersant is selected from a mixture of one or more of polycarboxylates, lignin sulfonates, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, alkylbenzene sulfonate calcium, naphthalenesulfonic acid formaldehyde condensate sodium salts, alkylphenol polyoxyethylene ethers, fatty amine polyoxyethylene ethers, fatty acid polyoxyethylene ethers or glycerol fatty acid ester polyoxyethylene ethers;

[0027] Furthermore, the wetting agent is selected from a mixture of one or more of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, lakai powder BX, wetting and penetrating agent F, sapodilla powder, silkworm feces or soapberry powder;

[0028] Furthermore, the penetrant is selected from a mixture of one or more of penetrant JFC (fatty alcohol polyoxyethylene ether), penetrant T (diisooctyl maleate sulfonate), azone or silicone;

[0029] Further, the dispersion medium is one or more of soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel, motor oil, mineral oil, etc.;

[0030] Furthermore, the antifreeze agent is selected from a mixture of one or more of ethylene glycol, propylene glycol, glycerol or urea;

[0031] Furthermore, the thickener is selected from a mixture of one or more of xanthan gum, disintegrant, bentonite, carboxymethyl cellulose or magnesium aluminum silicate;

[0032] Furthermore, the stabilizer is selected from a mixture of one or more of epoxy soybean oil, epichlorohydrin, BHT, ethyl acetate, and triphenyl phosphate;

[0033] Furthermore, the disintegrant is selected from a mixture of one or more of bentonite, urea, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate;

[0034] Furthermore, the defoaming agent is selected from a mixture of one or more of silicone oil, silicone compounds, C10-C20 saturated fatty acid compounds or C8-C10 fatty alcohol compounds.

[0035] Furthermore, the pesticide composition can be formulated into pesticide-acceptable formulations, including solid formulations, liquid formulations, seed treatment agents, and other formulations;

[0036] Furthermore, the dosage form of the preparation is a suspension, water dispersible granules, aqueous emulsion, microemulsion, granules, wettable powder, dispersible oil suspension;

[0037] Furthermore, the composition is prepared into a suspension, and the components and contents thereof are preferably: 0.1% to 50% of the compound of formula (I), 0.1% to 50% of chlorfenapyr, 2% to 10% of a dispersant, 2% to 10% of a wetting agent, 0.01% to 5% of a defoamer, 0% to 2% of a thickener, 0% to 8% of an antifreeze agent, and the balance is made up of deionized water;

[0038] Furthermore, the composition is prepared into water-dispersible granules, and the components and contents thereof are preferably: 0.1% to 50% of the compound of formula (I), 0.1% to 50% of chlorfenapyr, 3% to 15% of a dispersant, 3% to 15% of a wetting agent, 1% to 10% of a disintegrant, and the balance is made up of fillers;

[0039] Furthermore, the composition is prepared into an aqueous emulsion, and the components and contents thereof are preferably: 0.1% to 50% of the compound of formula (I), 0.1% to 50% of chlorfenapyr, 5% to 15% of an emulsifier, 2% to 10% of a solvent, 1% to 10% of an antifreeze agent, 0.5% to 3% of a stabilizer, and the balance is made up of deionized water;

[0040] Furthermore, the composition is prepared into a wettable powder, and the components and contents thereof are preferably: 0.1% to 50% of the compound of formula (I), 0.1% to 50% of chlorfenapyr, 5% to 20% of a wetting agent, 10% to 20% of a dispersant, and a solid carrier is supplemented to 100%;

[0041] Furthermore, the composition is prepared into granules, and the components and contents thereof are preferably: 0.1% to 50% of the compound of formula (I), 0.1% to 50% of chlorfenapyr, 2% to 10% of a dispersant, 2% to 10% of a wetting agent, and the balance is made up of fillers;

[0042] Furthermore, the composition is prepared into a dispersible oil suspension, the components and contents of which are preferably: 0.1% to 50% of the compound of formula (I), 0.1% to 50% of chlorfenapyr, 1% to 15% of a dispersant, 0.5% to 20% of an emulsifier, 1% to 10% of a wetting agent, 1% to 10% of a thickener, 0% to 10% of an antifreeze agent, and the balance being made up of a dispersion medium.

[0043] Furthermore, the preparation dosage form is any one of a suspension and a water dispersible granule.

[0044] Application of a pesticide composition containing chlorfenapyr in preventing and controlling agricultural and forestry pests and sanitary pests;

[0045] Furthermore, the agricultural and forestry pests and sanitary pests are Thysanoptera pests;

[0046] Further, the Thysanoptera pests are orchid thrips (Dichromothripscorbetti), Dichromothrips spp., tobacco brown thrips (Frankliniella fusca), alfalfa flower thrips (Frankliniella occidentalis), oriental flower thrips (Frankliniella tritici), platycodon thrips (Scirtothrips citri), rice thrips (Thrips oryzae), palm thrips (Thrips palmi) and tobacco thrips (Thrips tabaci);

[0047] Furthermore, the Thysanoptera pests are flower thrips, palm thrips, and tobacco thrips;

[0048] Furthermore, the pesticide composition is applied to the pests to be controlled or the medium in which they grow in an effective dose.

[0049] The pesticide composition of the present invention has the following advantages:

[0050] 1) The composition of the present invention exhibits a synergistic effect within a certain ratio range, thereby improving the control effect of the composition on pests;

[0051] 2) The two active ingredients in the composition of the present invention have different mechanisms of action, which effectively delays the development of insecticide resistance and prolongs the service life of the product;

[0052] 3) It is highly safe and suitable for all growth periods of crops. It can promote the growth of crops and make the produced crops of higher quality. DETAILED DESCRIPTION

[0053] The present invention is further described below with reference to the examples. The percentages in the examples are all percentages by weight, but the present invention is not limited thereto.

[0054] The composition of the present invention can be provided in the form of a preparation. It can be prepared into a suspension, water dispersible granules, etc. as needed. The content of the active ingredient in the composition of the present invention depends on the dosage when used alone, and also depends on the mixing ratio and the degree of synergistic effect. The optimal range of the active ingredient content varies according to the preparation type of the composition.

[0055] Preparation Example:

[0056] Example 1: 32% formula (I)·chlorfenapyr suspension (3:5)

[0057] Formula: 12% compound of formula (I), 20% chlorfenapyr, 2% phenethylphenol polyether phosphate, 2% Guerbet alcohol polyoxyethylene ether, 2% sodium alkyl polyoxyethylene ether sulfonate, 1.5% naphthalene sulfonate, 1.2% magnesium aluminum silicate, 0.15% xanthan gum, 0.01% carboxyethyl cellulose, 0.05% sodium sorbate, 5% ethylene glycol, 0.4% organosilicon defoamer, and deionized water to make up the balance;

[0058] Preparation method: according to the formula ratio, the active ingredient compound of formula (I), chlorfenapyr, surfactant and other functional additives are placed in a reaction kettle in sequence, water is added to mix evenly, and the suspension product is obtained by high-speed shearing, wet sand grinding, and finally homogenization filtration.

[0059] Example 2: 30% formula (I)·chlorfenapyr suspension (1:4)

[0060] Formula: 6% compound of formula (I), 24% chlorfenapyr, 2.5% sodium dodecyl sulfate, 1% naphthalenesulfonate formaldehyde condensate, 3% styrene phenol polyoxyethylene ether phosphate, 1% carboxymethyl cellulose, 1.2% magnesium aluminum silicate, 0.1% xanthan gum, 5% propylene glycol, 0.02% potassium benzoate, 0.4% organosilicon defoamer, and deionized water to make up the balance;

[0061] Preparation method: Same as Example 1.

[0062] Example 3: 26% formula (I)·chlorfenapyr suspension (3:10)

[0063] Formula: 6% compound of formula (I), 20% chlorfenapyr, 3% sodium lignin sulfonate, 1% naphthalene sulfonate formaldehyde condensate, 3% alkyl polyoxyethylene ether phosphate, 1% fatty alcohol polyoxyethylene ether, 0.5% carboxymethyl cellulose, 1.2% magnesium aluminum silicate, 0.15% xanthan gum, 5% propylene glycol, 0.02% potassium benzoate, 0.4% organosilicon defoamer, and deionized water to make up the balance;

[0064] Preparation method: Same as Example 1.

[0065] Example 4: 40% formula (I)·chlorfenapyr water dispersible granules (1:3)

[0066] Formula: 10% compound of formula (I), 30% chlorfenapyr, 12% sodium lignin sulfonate, 2.5% naphthalene sulfonate formaldehyde condensate, 2% sodium dodecyl sulfate, 4% sodium sulfate, and kaolin as the balance;

[0067] Preparation method: according to the formula ratio, add the active ingredient into the carrier, add the surfactant and other functional additives therein, mix, add 10-25% water after air flow pulverization, and then knead, granulate, dry and sieve to obtain the water dispersible granule product.

[0068] Example 5: 52% formula (I)·chlorfenapyr water dispersible granules (3:10)

[0069] Formula: 12% compound of formula (I), 40% chlorfenapyr, 8% sodium dodecylbenzene sulfonate, 2% sodium salt of polycarboxylate, 3% BX powder, 2.5% ammonium sulfate, and starch as the rest;

[0070] Preparation method: Same as Example 4.

[0071] Example 6: 60% formula (I)·chlorfenapyr water dispersible granules (1:2)

[0072] Formula: 20% compound of formula (I), 40% chlorfenapyr, 4% naphthalenesulfonate formaldehyde condensate, 2% sodium salt of polycarboxylate, 5% sodium dodecylbenzenesulfonate, 3% lakai powder BX, 0.5% urea, kaolin as the balance;

[0073] Preparation method: Same as Example 4.

[0074] Indoor biological activity assay

[0075] Indoor Example 1 Combined toxicity of the compound of formula (I) and chlorfenapyr to thrips

[0076] Test method: film rolling tube method;

[0077] Test insect source: tobacco thrips (Thrips tabaci);

[0078] Test agents: The technical drug of the compound of formula (I) and the technical drug of chlorfenapyr were provided by the R&D center of the group;

[0079] Preparation of medicine: The original drug is prepared into a mother solution with an organic solvent (acetone), and then 5 to 7 series of mass concentrations are prepared in equal proportion or equal difference method with a 0.05% to 0.1% Triton X-100 (or 0.1% Tween 80) aqueous solution.

[0080] Test operation steps:

[0081] Dip tube: A glass tube with a height of 7 cm and a diameter of 1.5 cm. Within the concentration range determined in the pre-experiment, dilute the test agent into 5 concentrations with acetone. Use a pipette to add 250ul of each concentration of the agent into the glass tube. Then place the glass tube flat and slowly roll the glass tube with your palm to accelerate the volatilization of the insecticide so that the agent is evenly attached to the inner wall of the glass tube. Each tube is a replicate, and 8 replicates are set for each concentration. The acetone dip tube is used as a control;

[0082] Leaf dipping: Use a cork puncher to punch fresh cabbage leaves into small discs with a diameter of 1 cm, and dip them in each concentration of the drug for 10 seconds. Leaves dipped in 0.1% Tween 80 were used as a control. The treated leaves were placed on filter paper to dry, and then clamped into a glass tube with the corresponding drug concentration using tweezers;

[0083] Use an insect sucker to transfer 25 second-instar nymphs or adults of Thrips into a glass tube and seal the tube opening with a 200-mesh gauze.

[0084] The treated test insects were raised and observed in an insectary room at a temperature of 25±0.1°C, a humidity of 60% to 80%, and a light-dark ratio of 16h:8h.

[0085] Investigation time: Investigate the mortality of test insects 36 hours after treatment and record the total number of insects and the number of dead insects.

[0086] Death judgment criteria: If the insect body does not respond when lightly touched with the tip of a brush, it is considered dead.

[0087] The calculation formula is as follows:

[0088]

[0089]

[0090] Data statistics and analysis: If the blank control mortality rate is less than 5%, no correction is required; if the blank control mortality rate is 5% to 10%, correction mortality rate is required; if the blank control mortality rate is more than 10%, the test needs to be repeated.

[0091] Theoretical toxicity index of mixture TTI = TI A ×P A +TIB ×P B

[0092]

[0093] Where: P A , P B are the proportions of active ingredients A and B in the composition, respectively.

[0094] Co-toxicity coefficient (CTC): CTC < 80 indicates antagonism, CTC > 120 indicates synergism, and between 80 and 120 indicates additive effect.

[0095] IBM SPSS Statistics 20 statistical analysis system was used to calculate the LC of the toxicity regression line. 50 Values ​​and their 95% confidence limits and correlation coefficients R 2 , evaluate the activity of the test agent on biological test materials.

[0096] Test results:

[0097] The results in Table 1 show that the mixture of the compound of formula (I) and cypermethrin has a good combined effect on the second-instar nymphs of thrips. When the weight ratio of the compound of formula (I) to cypermethrin is 1:30-28:1, the co-toxicity coefficient is greater than 120, showing a synergistic effect; when the weight ratio of the compound of formula (I) to cypermethrin is 1:30-20:1, the co-toxicity coefficient is greater than 130; when the weight ratio of the compound of formula (I) to cypermethrin is 1:20-6:1, the co-toxicity coefficient is greater than 140, showing a good synergistic effect; when the weight ratio of the compound of formula (I) to cypermethrin is 1:4, the highest co-toxicity coefficient is 204.954.

[0098] Table 1 Results of indoor toxicity test of compound of formula (I) and chlorfenapyr against thrips nymphs

[0099]

[0100]

[0101] The results in Table 2 show that the mixture of the compound of formula (I) and cypermethrin has a good combined effect on adult thrips. When the weight ratio of the compound of formula (I) to cypermethrin is 1:20-20:1, the co-toxicity coefficient is greater than 120, showing a synergistic effect; when the weight ratio of the compound of formula (I) to cypermethrin is 3:10-20:1, the co-toxicity coefficient is greater than 170, showing a good synergistic effect; among them, when the weight ratio of the compound of formula (I) to cypermethrin is 3:5, the co-toxicity coefficient is the highest, which is 225.202.

[0102] Table 2 Results of indoor toxicity test of compound of formula (I) and chlorfenapyr against adult thrips

[0103]

[0104] Indoor toxicity results showed that the mixture of the compound of formula (I) and cypermethrin had a good control effect on thrips, and the weight ratio of the compound of formula (I) to cypermethrin was in the range of 1:30 to 28:1, showing a synergistic effect.

[0105] Safety Test

[0106] Experimental crops and varieties: Momordica charantia L (evergreen bitter melon);

[0107] Experimental period: young leaf stage;

[0108] Test location: In the greenhouse of the R&D center laboratory;

[0109] Test agents: 30% formula (I)·chlorfenapyr suspension (1:4), 60% formula (I)·chlorfenapyr water dispersible granules (1:2), 10% formula (I) compound suspension, 240 g / L chlorfenapyr suspension

[0110] Specific experimental design:

[0111] Table 3 Safety test design

[0112]

[0113] Safety determination: Plant growth inhibition method, using stem and leaf spray to apply the drug, apply the drug once when the potted bitter gourd is in the 3-5 leaf stage (vegetative growth period).

[0114] Plot area and replication: randomized block arrangement, 4 replications per treatment, 15 bitter melon plants per treatment;

[0115] Growth rate investigation: plant height was measured before, 7 and 14 days after drug administration;

[0116] Investigation of drug damage: Observe and record the drug damage of plants 7d and 14d after application of drugs.

[0117] Leaf spot necrosis survey and grading method:

[0118] -: There is no dead spot or necrosis on the leaves;

[0119] +: The leaves have mild necrosis and spots, which does not affect the normal growth of crops;

[0120] ++: Moderate leaf spot necrosis, which can be recovered and will not cause crop yield reduction;

[0121] +++: Severe leaf necrosis affects the normal growth of crops and causes a certain degree of loss in crop yield and quality;

[0122] ++++: The leaves suffer from severe necrosis and spotting, which stunts crop growth and causes serious losses in yield and quality.

[0123] Deformity survey: The growth point of bitter melon is twisted and deformed due to drug damage, which is indicated by “★”.

[0124] Data processing:

[0125] Growth rate inhibition rate:

[0126] Growth rate (cm / d) = plant new height (cm) / time day (d);

[0127] Growth rate inhibition rate (%) = (blank control growth rate - drug treatment growth rate) / blank control growth rate × 100; Test results:

[0128] 30% formula (I)·chlorfenapyr suspension (1:4) and 60% formula (I)·chlorfenapyr water dispersible granules (1:2) had no inhibitory effect on the test bitter melon plants 7d and 14d after application.

[0129] Table 4 Safety test results of the compound of formula (I) and chlorfenapyr alone and in combination with bitter melon

[0130]

[0131] Note: The data in the table are the average of 4 repetitions, and letters indicate significant differences (0.05 / DMRT method)

[0132] Field efficacy examples

[0133] Field control effect of the compound of formula (I) mixed with chlorfenapyr on thrips

[0134] Test crops and targets: Bitter melon, Thrips;

[0135] Experimental location: Balsam pear planting greenhouse in Haiyang City, Yantai City, Shandong Province;

[0136] Test date: June 20, 2021;

[0137] Experimental environment: All experimental plots have uniform cultivation conditions and the same fertilizer and water management levels;

[0138] Test drug:

[0139] Table 5 Experimental design

[0140]

[0141]

[0142] Test method: Apply the pesticide once during the peak period of thrips infestation.

[0143] Plot area and replication: randomized block arrangement, each plot is 25 square meters, and each treatment is replicated 4 times.

[0144] Survey method: Randomly sample five points in each plot, survey 10 bitter melon leaves at each point, hang labels, and use the patting method to pat the thrips on the bitter melon leaves into a rice bucket covered with filter paper, and count the number.

[0145] The insect population base was investigated before application, and the number of thrips surviving on leaves of each treatment was investigated 1 day and 7 days after application, and the control effects were calculated respectively.

[0146] Calculation formula and data analysis:

[0147]

[0148]

[0149] Field efficacy test results:

[0150] The test results show that 30% formula (I) · chlorfenapyr suspension (1:4) and 60% formula (I) · chlorfenapyr water dispersible granules (1:2) have good control effects on thrips, and the dosage of active ingredient is 20 and 30 g ai / hm 2 1d and 7d after application, the control efficiency was above 90%, and the control effect was significant. Among them, the dosage of 30% formula (Ⅰ)·chlorfenapyr suspension (1:4) active ingredient was 30 gai / hm 2 The protective efficacy was 99.25% 7 days after application.

[0151] Table 6 Field efficacy of compound of formula (I) mixed with chlorfenapyr for controlling thrips

[0152]

[0153]

[0154] Note: The data in the table are the average of 4 replicates, the values ​​are rounded to two decimal places, and letters indicate significant differences (0.05 / DMRT method)

[0155] Through indoor toxicity determination and field test, the pesticide composition prepared by compounding the compound of formula (I) and chlorfenapyr of the present invention exhibits good control effect on Thysanoptera pests.

[0156] The pesticide composition or the preparation obtained by compounding the present invention has significant prevention effect, and is superior to a single agent in delaying the generation of drug resistance and prolonging drug retention. In addition, no compound agent was found to cause pesticide damage to crops in the test, indicating that the obtained pesticide composition or preparation can reduce production costs and use costs and is safe for crops when the insecticide synergistic synergy is improved.

[0157] Although the present invention has been described in detail above with general descriptions and specific implementation schemes, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. A pesticide composition containing chlorfenapyr, characterized in that: The pesticide composition comprises active ingredient A and active ingredient B, wherein the active ingredient A is a compound of formula (I) (I), the active ingredient B is chlorfenapyr, and the mass ratio of the active ingredient A to the active ingredient B is 1:20 to 20:

1.

2. The pesticide composition according to claim 1, characterized in that: The mass ratio between the active ingredient A and the active ingredient B is 1:8-6:

1.

3. The pesticide composition according to claim 1, characterized in that: Based on the total mass of the pesticide composition being 100wt%, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 0.5% to 90%.

4. The pesticide composition according to claim 1, characterized in that: The pesticide composition also includes adjuvants, which include carriers and adjuvants.

5. The pesticide composition according to claim 1, characterized in that: The pesticide composition can be formulated into a pesticide acceptable formulation, which is any one of a suspension, a water-dispersible granule, an aqueous emulsion, a microemulsion, a granule, a wettable powder, and a dispersible oil suspension.

6. The pesticide composition according to claim 5, characterized in that: The preparation dosage form is any one of a suspension and a water-dispersible granule.

7. Use of the pesticide composition according to any one of claims 1 to 6 in preventing and controlling agricultural and forestry pests and sanitary pests.

8. The use according to claim 7, characterized in that: The agricultural and forestry pests and sanitary pests are Thysanoptera pests.

9. The use according to claim 8, characterized in that: The thysanoptera pests are flower thrips, palm thrips and tobacco thrips.

10. The use according to claim 9, characterized in that: The pesticide composition is applied to the pests to be controlled or the medium where they grow in an effective dose.

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