CN116210702B

CN116210702B - A pesticide composition containing chlorfenapyr and its application

Info

Publication number: CN116210702B
Application number: CN202310241852.9A
Authority: CN
Inventors: 张芳; 刘金玲; 葛家成
Original assignee: Qingdao Hengning Biotechnology Co ltd
Current assignee: Qingdao Hengning Biotechnology Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2025-02-18
Anticipated expiration: 2043-03-14
Also published as: CN116210702A

Abstract

The invention belongs to the field of pesticide, and relates to a pesticide composition containing chlorfenapyr and application thereof. The pesticide composition comprises a compound of the formula (I) and chlorfenapyr, wherein the mass ratio of the compound of the formula (I) to the chlorfenapyr is 1:30-28:1. The composition has the advantages of synergism, resistance reduction, safety to crops and the like, and can be used for controlling agricultural and forestry pests and sanitary pests.

Description

Pesticide composition containing chlorfenapyr and application thereof

Technical Field

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

Background

Chlorfenapyr (chlorfenapyr) is a novel pyrrole compound, and is a high-efficiency insecticidal and acaricidal agent developed by American cyanamide company in the late-stage of 20 th century for 80 years. 122453-73-0, the action mechanism of which is that after the insect feeds or contacts chlorfenapyr, the insect is oxidized and metabolized into a compound with insecticidal activity in the insect body, then acts on mitochondria of cells in the insect body, and the compound acts through multifunctional oxidase in the insect body, so that the conversion of Adenosine Diphosphate (ADP) to Adenosine Triphosphate (ATP) is mainly inhibited, and the adenosine triphosphate stores energy necessary for the cells to maintain the vital functions of the insect, and finally the insect is killed. The composition has stomach toxicity and contact killing effect. The plant leaf has strong penetrability on leaf surface, a certain systemic effect, and has the characteristics of broad insecticidal spectrum, high control effect, long lasting effect and safety.

The compound of the formula (I) is a methoxy acrylic ester pesticide, the CAS number is 114077-75-7, and the chemical structural formula is as follows:

in the agricultural production process, the control of various harmful insects mainly depends on the application of a large amount of pesticide products, and the pesticide is used in a large amount and frequently unreasonably, so that the drug resistance of the harmful insects is continuously enhanced, the damage to crops is more serious, and the control is more difficult. Two or more medicaments with different action mechanisms can be mixed to achieve the aim of controlling different pests, improving the control effect of the medicaments and reducing the generation of drug resistance of the pests.

In addition, in the prior art, the technical solutions of the compositions comprising the compound of formula (I) and chlorfenapyr are not specifically disclosed.

Disclosure of Invention

The invention aims to provide a pesticide composition containing chlorfenapyr, which has the advantages of synergism, reduced resistance and safety to crops.

The technical scheme adopted by the invention is that the pesticide composition containing chlorfenapyr comprises an active ingredient A and an active ingredient B, wherein the active ingredient A is a compound shown as the formula (I)

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

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

Further, the mass ratio of the active ingredient A to the active ingredient B is 1:20-20:1;

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

further, the mass ratio of the active ingredient A to the active ingredient B is 1:8-6:1;

further, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 0.5% -90% based on 100% by weight of the total mass of the pesticide composition;

further, the sum of the contents of the active ingredient A and the active ingredient B in the pesticide composition is 10% -60% based on 100% by weight of the total mass of the pesticide composition;

Further, 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% and 60% based on 100% by weight of the total mass of the pesticide composition;

further, the pesticide composition also comprises an auxiliary agent, wherein the auxiliary agent comprises a carrier and an auxiliary agent;

Further, the carrier is one or more of water, solvent or filler;

Further, the carrier is deionized water;

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

further, the filler is selected from one or a mixture of more of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch or light calcium carbonate;

the auxiliary agent at least comprises a surfactant, and other functional auxiliary agents such as an antifreezing agent, a thickening agent, a stabilizing agent, a disintegrating agent, a defoaming agent, a slow release agent, a binder and the like can be added according to different use occasions and requirements;

The surfactant is one or more selected from emulsifying agent, dispersing agent, wetting agent, dispersing medium or penetrating agent;

The surfactant is a single agent or a compound preparation of a common nonionic surfactant or an anionic surfactant, and the other functional auxiliary agents are one or more selected from antifreezing agents, thickening agents, stabilizing agents, disintegrating agents and defoaming agents;

further, the emulsifier is selected from one or more of Nongru 500# (calcium alkylbenzenesulfonate), OP series phosphate (surfactant phosphate), 600# phosphate (phenylphenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether wetting agent salt, alkyl diphenyl ether disulfonate magnesium salt, triethanolamine salt, nongru 400# (benzyl dimethyl phenol polyoxyethylene ether), nongru 700# (alkylphenol formaldehyde resin polyoxyethylene ether), ningru 36# (phenethyl phenol formaldehyde resin polyoxyethylene ether), nongru 1600# (phenethyl phenol polyoxyethylene 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 polyoxyethylene ether) or AEO series (fatty alcohol polyoxyethylene ether);

Further, the dispersing agent is selected from one or more of polycarboxylate, lignosulfonate, alkylphenol ethoxylate formaldehyde condensate sulfate, calcium alkylbenzenesulfonate, naphthalene sulfonate formaldehyde condensate sodium salt, alkylphenol ethoxylate, fatty amine ethoxylate, fatty acid ethoxylate or glycerin fatty acid ester ethoxylate;

further, the wetting agent is selected from one or a mixture of more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, nekal BX, wetting penetrating agent F, chinese honeylocust fruit powder, silkworm excrement or soapberry powder;

Further, the penetrating agent is selected from one or a mixture of more of penetrating agent JFC (fatty alcohol polyoxyethylene ether), penetrating agent T (diisooctyl maleate sulfonate), azone or organic silicon;

Further, a dispersion medium such as one or more of soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil, and the like;

further, the antifreezing agent is selected from one or a mixture of more of ethylene glycol, propylene glycol, glycerol or urea;

Further, the thickener is selected from one or more of xanthan gum, disintegrating agent, bentonite, carboxymethyl cellulose or magnesium aluminum silicate;

further, the stabilizer is selected from one or a mixture of more of epoxidized soybean oil, epichlorohydrin, BHT, ethyl acetate and triphenyl phosphate;

further, the disintegrating agent is selected from one or a mixture of more of bentonite, urea, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate;

Further, the defoamer is selected from one or a mixture of more of silicone oil, silicone compounds, C10-C20 saturated fatty acid compounds or C8-C10 fatty alcohol compounds.

Further, the pesticide composition can be prepared into a pesticide acceptable preparation formulation, including solid preparations, liquid preparations, seed treatment agents and other preparations;

further, the preparation is in the form of suspending agent, water dispersible granule, aqueous emulsion, microemulsion, granule, wettable powder and dispersible oil suspending agent;

Further, the composition is prepared into a suspending agent, and the suspending agent comprises the components and the content of preferably 0.1-50% of a compound shown in the formula (I), 0.1-50% of chlorfenapyr, 2-10% of a dispersing agent, 2-10% of a wetting agent, 0.01-5% of a defoaming agent, 0-2% of a thickening agent, 0-8% of an antifreezing agent and the balance of deionized water;

Further, the composition is prepared into water dispersible granules, and the water dispersible granules comprise 0.1-50% of a compound shown in a formula (I), 0.1-50% of chlorfenapyr, 3-15% of a dispersing agent, 3-15% of a wetting agent, 1-10% of a disintegrating agent and the balance of filler;

Further, the composition is prepared into an aqueous emulsion, and the composition contains the components and the content of the components are preferably 0.1-50% of a compound shown in the formula (I), 0.1-50% of chlorfenapyr, 5-15% of an emulsifying agent, 2-10% of a solvent, 1-10% of an antifreezing agent, 0.5-3% of a stabilizing agent and the balance of deionized water;

Further, the composition is prepared into wettable powder, and the components and the content of the wettable powder are preferably 0.1-50% of a compound shown in the formula (I), 0.1-50% of chlorfenapyr, 5-20% of a wetting agent, 10-20% of a dispersing agent and 100% of a solid carrier;

further, the composition is prepared into granules, and the components and the content of the granules are preferably 0.1-50% of a compound shown in the formula (I), 0.1-50% of chlorfenapyr, 2-10% of a dispersing agent, 2-10% of a wetting agent and the balance of filler;

Further, the composition is prepared into a dispersible oil suspending agent, and the dispersible oil suspending agent comprises the components and the content of preferably 0.1% -50% of a compound shown in a formula (I), 0.1% -50% of chlorfenapyr, 1% -15% of a dispersing agent, 0.5% -20% of an emulsifying agent, 1% -10% of a wetting agent, 1% -10% of a thickening agent, 0% -10% of an antifreezing agent and the balance of a dispersing medium.

Further, the preparation formulation is any one of suspending agent and water dispersible granule.

The application of the pesticide composition containing chlorfenapyr in the aspect of controlling agricultural and forestry pests and sanitary pests;

Further, the agricultural and forestry pests and the sanitary pests are thysanoptera pests;

Further, the Thysanoptera (Thysanoptera) pests are frankliniella (Dichromothrips corbetti), dichromothrips, tabacia tabaci (FRANKLINIELLA FUSCA), alfalfa frankliniella (FRANKLINIELLA OCCIDENTALIS), oriental frankliniella (FRANKLINIELLA TRITICI), platycodon grandiflorum (Scirtothrips citri), rice Thrips (threps oryzae), palm Thrips (THRIPS PALMI) and tabaci (threps tabaci);

Further, the thysanoptera pests are frankliniella occidentalis, palmi thrips and thrips tabaci;

further, the pesticidal composition is applied to a pest to be controlled or a medium on which it grows in an effective dose.

The pesticide composition has the following advantages:

1) The composition of the invention shows synergism within a certain proportion range, and improves the control effect of the composition on pests;

2) The two active ingredients in the composition have different action mechanisms, so that the generation of drug resistance of pests is effectively delayed, and the service life of the product is prolonged;

3) The safety is high, and the method is suitable for each growth period of crops, can promote the growth of the crops, and ensures that the produced crops have higher quality.

Detailed Description

The invention will be further illustrated with reference to the following examples, in which the percentages are by weight, but the invention is not limited thereto.

The compositions of the present invention may be provided in the form of a formulation. And preparing into suspending agents, water dispersible granules and the like according to the requirements. The content of active ingredient in the composition of the invention depends on the application amount when used alone, and also on the compounding ratio and the degree of synergism. The optimum range of the active ingredient content varies depending on the type of formulation of the composition.

Formulation preparation examples:

EXAMPLE 1 32% chlorfenapyr suspension (3:5) of formula (I)

The formula comprises 12% of a compound of formula (I), 20% of chlorfenapyr, 2% of phenethyl phenol polyether phosphate, 2% of guerbet alcohol polyoxyethylene ether, 2% of sodium alkyl polyoxyethylene ether sulfonate, 1.5% of naphthalene sulfonate, 1.2% of magnesium aluminum silicate, 0.15% of xanthan gum, 0.01% of carboxyethyl cellulose, 0.05% of sodium sorbate, 5% of ethylene glycol, 0.4% of organosilicon defoamer and deionized water, wherein the balance is the balance;

the preparation method comprises the steps of sequentially placing the effective components of the compound shown in the formula (I), chlorfenapyr, a surfactant and other functional auxiliary agents in a reaction kettle according to the formula proportion, adding water, uniformly mixing, shearing at a high speed, performing wet sanding, and finally homogenizing and filtering to obtain a suspending agent product.

EXAMPLE 2 30% chlorfenapyr suspension (1:4) of formula (I)

The formula comprises 6% of compound of formula (I), 24% of chlorfenapyr, 2.5% of sodium dodecyl sulfate, 1% of naphthalene sulfonate formaldehyde condensate, 3% of styrol polyoxyethylene ether phosphate, 1% of carboxymethyl cellulose, 1.2% of magnesium aluminum silicate, 0.1% of xanthan gum, 5% of propylene glycol, 0.02% of potassium benzoate, 0.4% of organosilicon defoamer and deionized water, wherein the balance is the balance;

The preparation method is the same as in example 1.

EXAMPLE 3 26% chlorfenapyr suspension of formula (I) (3:10)

The formula comprises 6% of a compound of formula (I), 20% of chlorfenapyr, 3% of sodium lignosulfonate, 1% of naphthalene sulfonate formaldehyde condensate, 3% of alkyl polyoxyethylene ether phosphate, 1% of fatty alcohol polyoxyethylene ether, 0.5% of carboxymethyl cellulose, 1.2% of magnesium aluminum silicate, 0.15% of xanthan gum, 5% of propylene glycol, 0.02% of potassium benzoate, 0.4% of organic silicon defoamer and deionized water, wherein the balance is filled;

The preparation method is the same as in example 1.

EXAMPLE 4 40% formula (I) chlorfenapyr Water dispersible granule (1:3)

The formula comprises 10% of compound of formula (I), 30% of chlorfenapyr, 12% of sodium lignin sulfonate, 2.5% of naphthalene sulfonate formaldehyde condensate, 2% of sodium dodecyl sulfate, 4% of anhydrous sodium sulfate and the balance of kaolin;

The preparation method comprises the steps of adding the effective components into a carrier according to the proportion of an example formula, adding a surfactant and other functional additives into the carrier, mixing, adding 10-25% of water after jet milling, and then kneading, granulating, drying and screening to obtain the water dispersible granule product.

EXAMPLE 5 52% formula (I) chlorfenapyr Water dispersible granule (3:10)

The formula comprises 12% of compound of formula (I), 40% of chlorfenapyr, 8% of sodium dodecyl benzene sulfonate, 2% of sodium polycarboxylate, 3% of nekal BX, 2.5% of ammonium sulfate and the balance of starch;

The preparation method is the same as in example 4.

EXAMPLE 6 60% chlorfenapyr Water dispersible granule of formula (I) (1:2)

The formula comprises 20% of compound of formula (I), 40% of chlorfenapyr, 4% of naphthalene sulfonate formaldehyde condensate, 2% of sodium polycarboxylate, 5% of sodium dodecyl benzene sulfonate, 3% of nekal BX, 0.5% of urea and the balance of kaolin;

The preparation method is the same as in example 4.

Indoor biological Activity assay

Indoor example 1 Combined toxicity of Compounds of formula (I) and chlorfenapyr against thrips

The test method comprises a medicine film rolling tube method;

a tested insect source, namely Thrips tabaci;

The test agent is a compound original drug of the formula (I) and a chlorfenapyr original drug are provided by a group research and development center;

The preparation method comprises the steps of preparing a mother solution from an original organic solvent (acetone), and preparing 5-7 series of mass concentrations by using 0.05% -0.1% Triton X-100 (or 0.1% Tween 80) aqueous solution according to an equal ratio or an equal difference method.

The test operation steps are as follows:

The dipping tube is a glass tube with the height of 7cm and the diameter of 1.5cm, the test reagent is diluted into 5 concentrations by acetone within the concentration range determined by the pre-experiment, 250ul of reagents with each concentration are added into the glass tube by a pipette, then the glass tube is horizontally placed, and the palm is used for slowly rolling the glass tube to accelerate the volatilization of the pesticide, so that the reagents are uniformly attached on the inner wall of the glass tube. One repetition is arranged for each tube, 8 repetitions are arranged for each concentration, and an acetone immersed tube is used as a control;

leaf dipping by punching fresh cabbage leaves into 1cm diameter small discs with a punch, immersing for 10s in each concentration of the agent, and using 0.1% Tween 80 as a control. The treated leaves are placed on filter paper for airing, and are clamped into glass tubes with corresponding medicament concentration by forceps;

Transferring 25 thrips 2-year nymphs or adults into a glass tube by using a fluke device, and sealing the tube orifice by using a screen with 200 meshes.

And (3) placing the treated test insects at the temperature of 25+/-0.1 ℃ and the humidity of 60% -80% for 16h to 8h, and feeding and observing in an insect-raising room.

Investigation time is 36 hours after treatment, investigation of death condition of the test insects, and recording of total insects and dead insects.

Death criterion, namely death is counted by the fact that the tip of the writing brush dabs the insect body without reaction.

The calculation formula is as follows:

Data statistics and analysis show that the death rate of the blank control is less than 5% without correction, the death rate of the blank control is 5% -10%, the death rate of the blank control is required to be corrected, and the test is required to be carried out again when the death rate of the blank control is more than 10%.

Mixed agent theoretical toxicity index tti=ti _A×P_A+TI_B×P_B

Wherein P _A、P_B is the proportion of the active ingredient A, B in the composition.

Co-toxicity coefficient (CTC) CTC <80 is antagonism, CTC >120 is potentiation, and between 80 and 120 is additive.

And (3) analyzing by adopting an IBM SPSS STATISTICS statistical analysis system, solving the LC ₅₀ value of the virulence regression line, the 95% confidence limit and the correlation coefficient R ² of the virulence regression line, and evaluating the activity of the test agent on the biological test material.

Test results:

The results in the table 1 show that the compound of the formula (I) and the chlorfenapyr have better combined action on thrips of 2 ages, the co-toxicity coefficient of the compound of the formula (I) and the chlorfenapyr is greater than 120 when the weight ratio of the compound of the formula (I) to the chlorfenapyr is 1:30-28:1, the synergistic action is shown, the co-toxicity coefficient of the compound of the formula (I) and the chlorfenapyr is greater than 130 when the weight ratio of the compound of the formula (I) and the chlorfenapyr is 1:30-20:1, the co-toxicity coefficient of the compound of the formula (I) and the chlorfenapyr is greater than 140 when the weight ratio of the compound of the formula (I) and the chlorfenapyr is 1:20-6:1, and the synergistic action is shown to be better.

TABLE 1 results of indoor toxicity measurements of Compound of formula (I) and chlorfenapyr against thrips nymphs

The results in the table 2 show that the compound in the formula (I) and the chlorfenapyr have better combined action on adult thrips, the co-toxicity coefficient of the compound in the formula (I) and the chlorfenapyr is greater than 120 when the weight ratio of the compound in the formula (I) to the chlorfenapyr is 1:20-20:1, the synergistic action is shown, the co-toxicity coefficient of the compound in the formula (I) and the chlorfenapyr is greater than 170 when the weight ratio of the compound in the formula (I) and the chlorfenapyr is 3:10-20:1, and the synergistic action is shown, wherein the highest co-toxicity coefficient of the compound in the formula (I) and the chlorfenapyr is 225.202.

TABLE 2 indoor toxicity determination results of Compound of formula (I) and chlorfenapyr on thrips adults

Indoor toxicity results show that the compound of the formula (I) and chlorfenapyr have better prevention effect on thrips, and the weight ratio of the compound of the formula (I) to the chlorfenapyr is in the range of 1:30-28:1, so that the compound of the formula (I) and the chlorfenapyr show synergistic effect.

Safety test

Test crop and variety balsam pear Momordica CHARANTIA L (evergreen balsam pear);

the test period is the tender leaf period;

the test site is in a laboratory greenhouse of a research and development center;

the test agent comprises 30% of chlorfenapyr suspending agent (1:4) of formula (I), 60% of chlorfenapyr water dispersible granule (1:2) of formula (I), 10% of compound suspending agent of formula (I) and 240 g/L chlorfenapyr suspending agent

The specific test design comprises the following steps:

TABLE 3 safety test design

The safety measurement is that the plant growth inhibition method adopts stem and leaf spraying mode to apply the medicine for 1 time in 3-5 leaf stage (vegetative growth stage) of potted bitter gourd.

Cell area and repetition, namely random group arrangement, repeating for 4 times per treatment and 15 strains of balsam pear per treatment;

investigation of growth rate, namely respectively measuring plant height before and after the drug for 7 and 14 days;

And (3) phytotoxicity investigation, namely respectively observing and recording plant phytotoxicity conditions 7d and 14d after the phytotoxicity.

Leaf spot necrosis investigation and grading method:

Leaf no dead spot necrosis;

Slight leaf spot and leaf withering, which does not affect the normal growth of crops;

moderate leaf spot necrosis, can recover, will not cause the crop to reduce the yield;

The serious dead spot necrosis of the leaves affects the normal growth of crops, and causes a certain loss of the yield and quality of the crops;

The leaf is severely dead spot and necrotic, the crop growth is blocked, and the yield and quality loss is serious.

Deformity investigation, namely, the phytotoxicity causes the balsam pear growth point to distort and deform, which is indicated by '∈'.

And (3) data processing:

Growth rate inhibition rate:

growth rate (cm/d) =plant new growth height (cm)/time day (d);

growth rate inhibition (%) = (blank growth rate-agent treatment growth rate)/blank growth rate×100, test results:

the chlorfenapyr suspension agent with the formula (I) and the chlorfenapyr water dispersible granule with the formula (I) and the chlorfenapyr water dispersible granule with the formula (1:4) are used for 7d and 14d after being used for the test balsam pear plants, and the chlorfenapyr suspension agent with the formula (I) and the chlorfenapyr water dispersible granule with the formula (I) and the formula (1:2) have no inhibition effect.

TABLE 4 safety test results of Compounds of formula (I) and chlorfenapyr in single dose and blend on Momordica Charantia

Note that the data in the table are the average of 4 replicates, and the letters indicate significance of the differences (0.05/DMRT method)

Example of field efficacy

The compound of the formula (I) is mixed with chlorfenapyr to realize field prevention effect on thrips

Test crop and target, bitter gourd and thrips;

the test site is a greenhouse for planting balsam pears in Haiyang city of a tobacco stand in Shandong province;

test time is 2021, 6 and 20 days;

the test environment is that the cultivation conditions of all the test cells are uniform and consistent, and the same fertilizer and water management level is adopted;

Test agent:

Table 5 test design

The test method comprises applying the drug 1 time in the thrips occurrence stage.

Cell area and repetition, random block arrangement, 25 square meters per cell, 4 times per treatment.

The investigation method comprises the steps of randomly sampling five points in each district, investigating 10 balsam pear leaves in each point, hanging labels, beating thrips on the balsam pear leaves into a rice barrel paved with filter paper by using a beating method, and counting the number.

The number of insect population is investigated before the application, the survival number of each treated thrips is investigated 1 day and 7 days after the application, and the control effect is calculated respectively.

Calculation formula and data analysis:

Results of field efficacy experiments:

The test results show that 30% of the chlorfenapyr suspending agent (1:4) in the formula (I) and 60% of the chlorfenapyr water dispersible granule (1:2) in the formula (I) have good control effects on thrips, the dosage of the active ingredients is 1d and 7d after 20g ai/hm ² of the suspending agent are applied, the control effects are over 90%, and the control effects are obvious. Wherein, when the dosage of the active ingredients of the 30% chlorfenapyr suspending agent (1:4) in the formula (I) is 30g ai/hm ², the prevention effect of 7d after the medicine is 99.25%.

Table 6 field efficacy of Compounds of formula (I) and chlorfenapyr in preventing and controlling thrips

Note that the data in the table are the average of 4 replicates, the values remain two decimal places, and the letters indicate significance of the differences (0.05/DMRT method)

Through indoor toxicity measurement and field experiments, the pesticide composition compounded by the compound shown in the formula (I) and chlorfenapyr has a good control effect on thysanoptera pests.

The pesticide composition or the preparation prepared by the combination has remarkable prevention effect, and is superior to a single dose in the aspects of delaying the generation of drug resistance and prolonging the drug retention. In addition, no pesticide harm of the compound pesticide to crops is found in the test, which proves that the production cost and the use cost can be reduced and the pesticide composition is safe to crops under the condition that the insecticidal synergy of the obtained pesticide composition or preparation is improved.

While the invention has been described in detail in terms of the general description and the specific embodiments, it will be apparent to those skilled in the art that various modifications and improvements can be made thereto without departing from the spirit of the invention.

Claims

1. A pesticide composition containing chlorfenapyr, characterized in that: the pesticide composition comprises active ingredient A and active ingredient B, and 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 as 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 an adjuvant, and the adjuvant includes a carrier and an auxiliary agent.

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

6. The pesticide composition according to claim 5, characterized in that the formulation is in the form of a suspension concentrate or 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 in which they grow in an effective dose.