Acaricidal composition containing pyridaben and application thereof

By preparing a pesticide formulation using a combination of pyridabenz and diphenyl sulfide compounds, the problem of pesticide resistance of truncate spider mites is solved, efficient prevention and control of harmful mites and cost reduction are achieved, and the service life of the agent is extended.

CN120584853AActive Publication Date: 2025-09-05QINGDAO HAILIER BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202410705197.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-03
Publication Date
2025-09-05
Estimated Expiration
2044-06-03

AI Technical Summary

Technical Problem

The truncate spider mite has developed resistance to insecticides and acaricides such as pyridabenz, resulting in a decrease in the control effect. It is necessary to use pyridabenz and diphenyl sulfide compounds in combination to expand the acaricide spectrum, improve the control effect, and extend the service life of the agent.

Method used

Pyridaben and diphenyl sulfide compounds are combined within a certain proportion to form a mite-killing composition, and agriculturally permitted auxiliary ingredients are added to prepare pesticide preparations in different dosage forms for the prevention and control of herbivorous mites.

Benefits of technology

It enhances the control effect on harmful mites, delays drug resistance, reduces usage costs, prolongs the duration of effectiveness, and is safe for crops and non-target organisms.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of pesticides, and relates to a pyridaben-containing acaricidal composition and application thereof, the acaricidal composition comprises an active component A and an active component B, the active component A is pyridaben, and the active component B is a biphenyl sulfide compound. The acaricidal composition can prevent and treat various pest mites, has a synergistic effect in a certain proportion range, and can enlarge the acaricidal spectrum, reduce the use cost, reduce the dosage, prolong the lasting period and delay the development of drug resistance.
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Description

Technical Field

[0001] The invention belongs to the field of pesticides, and particularly relates to a pyridaben-containing acaricidal composition and application thereof. Background Art

[0002] The truncatus spider mite (Tetranychus truncatus (Ehara)) is a pest of the subclass Acari, order Acarina, family Tetranychidae. It primarily infests cotton and corn in most areas of Northwest China, while it is a significant pest of vegetables, flowers, and jujubes in Northeast China, Shandong, and Southwest China. Currently, chemical control remains the primary method of controlling truncatus. It has reportedly developed resistance to many commonly used single-dose insecticides and acaricides. Appropriate compounding or blending of chemical agents has the potential to broaden the insecticide spectrum, enhance control effectiveness, extend the optimal application period, reduce dosage, minimize pesticide damage, reduce residues, and delay the development of pesticide resistance in mites.

[0003] Dabendazole is a mitochondrial electron transport inhibitor (METI), which mainly inhibits electron transfer at coenzyme Q0. This agent has a novel structure and unique mechanism of action, and is highly effective and broad-spectrum in killing spider mites. It is currently widely used in fields, but long-term, large-scale, and single use can easily lead to the development of drug resistance in truncate spider mites.

[0004] Therefore, in order to reduce the resistance of pests such as mites to pyridabenzaline as much as possible and to improve the control effect of pests such as mites, it is necessary to compound the pyridabenzaline acaricide to extend the service life of the agent. Summary of the Invention

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a mite-killing composition containing pyridabenzyl, which can effectively control a variety of plant-feeding pest mites, show a synergistic effect within a certain proportion range, expand the mite-killing spectrum, reduce the cost of use, reduce the amount of medicine used, prolong the lasting effect and delay the development of drug resistance.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: a pesticide composition containing pyridabenzyl, which comprises an active ingredient A and an active ingredient B, wherein the active ingredient A is pyridabenzyl and the active ingredient B is a diphenyl sulfide compound as shown in formula (I):

[0007]

[0008] Furthermore, in the active ingredient B of formula (I), R1 is selected from CF3, F, and Br; the specific structure is as follows:

[0009]

[0010] Furthermore, the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 30:1;

[0011] Furthermore, the mass ratio of the pyridabenzyl to the compound (I-1) is 1:30 to 25:1; the mass ratio of the pyridabenzyl to the compound (I-2) is 1:35 to 30:1; the mass ratio of the pyridabenzyl to the compound (I-3) is 1:25 to 30:1;

[0012] Furthermore, the mass ratio of the active ingredient A, pyridabenzan, to the active ingredient B, phenyl sulfide compound, is shown in the following table:

[0013]

[0014]

[0015] Furthermore, based on the total weight of the pesticide composition being 100 wt%, the sum of the content of the active ingredient A and the active ingredient B in the pesticide composition is 1 to 95 wt%;

[0016] Furthermore, the sum of the content of the active ingredient A and the active ingredient B in the pesticide composition is 5 to 80 wt%;

[0017] Furthermore, the pesticide composition further comprises, in addition to the active ingredient, auxiliary ingredients acceptable to agricultural production, wherein the auxiliary ingredients are selected from one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoaming agents, solvents, preservatives, stabilizers, synergists or carriers;

[0018] The wetting agent is selected from one or more of alkylbenzene sulfonate, alkylnaphthalene sulfonate, lignin sulfonate, sodium lauryl sulfate, sodium dioctyl sulfosuccinate, alpha olefin sulfonate, alkylphenol polyoxyethylene ether, castor oil polyoxyethylene ether, alkylphenol ethoxylate, fatty alcohol ethoxylate, fatty alcohol polyoxyethylene ether sodium sulfate, silkworm feces, soapberry powder, soapberry powder, SOPA, detergent, emulsifier 2000 series and wetting penetrant F; and / or

[0019] The dispersant is selected from one or more of lignin sulfonate, alkylnaphthalene sulfonate formaldehyde condensate, naphthalene sulfonate, tristyrylphenol ethoxylate phosphate, fatty alcohol ethoxylate, alkylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether methyl ether condensate sulfate, fatty amine polyoxyethylene ether, glycerol fatty acid ester polyoxyethylene ether, polycarboxylates, polyacrylic acids, phosphates, EO-PO block copolymers and EO-PO graft copolymers; and / or

[0020] The emulsifier is selected from one or more of calcium dodecylbenzenesulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, phenylethylphenol polyoxyethylene polyoxypropylene ether, fatty alcohol ethylene oxide-propylene oxide copolymer, styrylphenol polyoxyethylene ether, castor oil polyoxyethylene ether and alkylphenol ether phosphate; and / or

[0021] The thickener is selected from one or more of xanthan gum, organobentonite, gum arabic, sodium alginate, magnesium aluminum silicate, carboxymethyl cellulose and white carbon black; and / or

[0022] Disintegrants: The disintegrants are selected from one or more of sodium sulfate, ammonium sulfate, aluminum chloride, sodium chloride, ammonium chloride, bentonite, glucose, sucrose, starch, cellulose, urea, sodium carbonate, sodium bicarbonate, citric acid and tartaric acid; and / or

[0023] The antifreeze agent is selected from one or more of alcohols, alcohol ethers, chlorinated hydrocarbons and inorganic salts; and / or

[0024] Defoaming agent selected from C 10 -C 20 Saturated fatty acid compounds, silicone oil, silicone compounds, C8-C 10 One or more of fatty alcohols; and / or

[0025] The solvent is selected from one or more of benzene, toluene, xylene, durene, methanol, ethanol, isopropanol, n-butanol, dimethyl sulfoxide, dimethylformamide, cyclohexanone, alkylene carbonate, diesel, solvent oil, vegetable oil, vegetable oil derivatives and water; and / or

[0026] The preservative is selected from one or more of propionic acid, sodium propionic acid, sorbic acid, sodium sorbic acid, potassium sorbic acid, benzoic acid, sodium benzoic acid, sodium p-hydroxybenzoic acid, methyl p-hydroxybenzoate, kasone and 1,2-benzisothiazolin-3-one; and / or

[0027] The stabilizer is selected from one or more of disodium hydrogen phosphate, oxalic acid, succinic acid, adipic acid, borax, 2,6-di-tert-butyl-p-cresol, triethanolamine oleate, epoxidized vegetable oil, kaolin, bentonite, attapulgite, white carbon black, talc, montmorillonite and starch; and / or

[0028] Synergists are selected from synergist, piperonyl butoxide; and / or

[0029] The carrier is selected from one or more of ammonium salts, ground natural minerals, ground artificial minerals, silicates, resins, waxes, solid fertilizers, water, organic solvents, mineral oils, vegetable oils and vegetable oil derivatives;

[0030] Furthermore, the pesticide composition can be prepared into an agriculturally acceptable formulation, wherein the formulation is selected from a solid formulation and / or a liquid formulation;

[0031] The solid preparations include powders, granules, pellets, tablets, strips, wettable powders, oil-dispersible powders, emulsion powders, water-dispersible granules, emulsion granules, water-dispersible tablets, soluble powders, soluble tablets or soluble granules;

[0032] The liquid preparations include soluble solutions, soluble gels, oils, film-spreading oils, emulsifiable concentrates, latexes, dispersible solutions, ointments, aqueous emulsions, oil emulsions, microemulsions, lipid suspensions, microcapsule suspensions, oil suspensions, dispersible oil suspensions, suspoemulsions, microcapsule suspension-suspension concentrates, microcapsule suspension-water emulsions, or microcapsule suspension-suspoemulsions;

[0033] Furthermore, the solid preparation is selected from wettable powder, water dispersible granules, soluble granules; the liquid preparation is selected from emulsifiable concentrate, water emulsion, suspension concentrate;

[0034] Furthermore, the phytophagous pest mites are Tetranychus, Acaridae and / or Eupodidae pest mites;

[0035] Furthermore, the acaricidal composition and / or its preparation is applied in an effective dose to the harmful mites to be controlled or the medium where they grow.

[0036] Beneficial effects of the present invention:

[0037] (1) The acaricidal composition of the present invention has a significant synergistic effect at a certain ratio;

[0038] (2) It is safe and highly effective, can delay the development of pesticide resistance in pest mites, and reduce the amount of pesticides used;

[0039] (3) It has a long lasting effect and can effectively control the damage of crops to mites throughout the entire growth period. It is safe for crops, non-target organisms, beneficial organisms and natural enemies. DETAILED DESCRIPTION

[0040] In order to make the technical solutions, objectives and advantages of the present invention more clearly understood, the present invention is described with reference to the following specific embodiments. However, the present invention can be implemented in various forms and should not be limited to the embodiments described herein.

[0041] Preparation example:

[0042] Preparation Example 1: 42% pyridabenz-formula (I-1) suspension (30:12)

[0043] Preparation formula: 30% pyridabenz, 12% compound of formula (I-1), 2% polyether, 3% fatty amine polyoxyethylene ether, 1.5% polycarboxylate, 3% sodium lauryl sulfate, 0.8% sodium p-hydroxybenzoate, 0.02% xanthan gum, 1% magnesium aluminum silicate, 2.5% propylene glycol, 2% glycerin, 0.02% silicone, and deionized water to make up the balance;

[0044] Preparation method: According to the formula ratio of the embodiment, the active ingredients, surfactants and other functional additives are placed in a reactor in sequence, oil is added and mixed evenly, and the suspension product is obtained by high-speed shearing, wet sand grinding, and finally homogenization filtration.

[0045] Preparation Example 2: 33% pyridabenin·Formula (I-2) compound suspension (12:21)

[0046] Preparation formula: 12% pyridabenz, 21% compound of formula (I-2), 3.5% castor oil polyoxyethylene ether, 1.5% polycarboxylate, 4% sodium lignin sulfonate, 0.5% sodium sorbate, 0.1% xanthan gum, 1% magnesium aluminum silicate, 5% propylene glycol, 0.4% dimethyl silicone oil, and deionized water to make up the balance;

[0047] Preparation method: Same as Preparation Example 1.

[0048] Preparation Example 3: 40% pyridabenin·Formula (I-3) compound suspension (20:20)

[0049] Preparation formula: 20% pyridabenz, 20% compound of formula (I-3), 3% sodium lignin sulfonate, 3% sodium fatty alcohol polyoxyethylene ether sulfate, 1% naphthalene sulfonate, 0.01% benzisothiazolinone, 0.01% benzoic acid, 0.1% xanthan gum, 5% ethylene glycol, 0.5% magnesium aluminum silicate, 0.01% organosilicon defoamer, and deionized water to make up the balance;

[0050] Preparation method: Same as Preparation Example 1.

[0051] Preparation Example 4: 15% pyridabenin·Formula (I-1) compound emulsifiable concentrate (7:8)

[0052] Preparation formula: 7% pyridabenz, 8% compound of formula (I-1), 15% propylene carbonate, 5% sodium lauryl sulfate, 15% fatty alcohol polyoxyethylene ether, and methyl oleate to make up the balance;

[0053] Preparation method: Add the active ingredients into a carrier according to the formula ratio of the embodiment, add a surfactant and other functional additives thereto, stir and mix them evenly in a stirring mixing kettle to obtain an emulsifiable concentrate product.

[0054] Preparation Example 5: 15% pyridabenin·Formula (I-2) compound emulsifiable concentrate (7:8)

[0055] Preparation formula: 7% pyridabenzyl, 8% compound of formula (I-2), 15% propylene carbonate, 5% calcium dodecylbenzenesulfonate, 20% fatty alcohol polyoxyethylene ether, and methyl oleate to make up the balance;

[0056] Preparation method: Same as Preparation Example 6.

[0057] Preparation Example 6: 15% pyridabenin·Formula (I-3) compound emulsifiable concentrate (7.5:7.5)

[0058] Preparation formula: 7.5% pyridabenzyl, 7.5% compound of formula (I-3), 20% propylene carbonate, 4.5% sodium dodecylbenzenesulfonate, 15% fatty alcohol polyoxyethylene ether, and methyl oleate to make up the balance;

[0059] Preparation method: Same as Preparation Example 6.

[0060] Preparation Example 7: 40% pyridabenin·Formula (I-2) compound wettable powder (10:30)

[0061] Preparation formula: 10% pyridaben, 30% compound of formula (I-2), 10% sodium lignosulfonate, 7.5% phenethylphenol polyether phosphate, 5% polycarboxylate, 7% starch, 5% white carbon black, and kaolin to make up the balance;

[0062] Preparation method: According to the formula ratio of the embodiment, the active ingredients are added to the carrier, and the surfactant and other functional additives are added thereto, mixed, and then air flow pulverized and mixed again to obtain the wettable powder product.

[0063] Preparation Example 8: 50% pyridabenin·Formula (I-3) compound wettable powder (20:30)

[0064] Preparation formula: 20% pyridabenzyl, 30% compound of formula (I-3), 10% sodium dodecylbenzenesulfonate, 7.5% phenethylphenol polyether phosphate, 5% polycarboxylate, 7% starch, 7% sucrose, and bentonite to make up the balance;

[0065] Preparation method: same as Preparation Example 4.

[0066] Preparation Example 9: 25% pyridabenin·Formula (I-2) compound aqueous emulsion (10:15)

[0067] Preparation formula: 10% pyridabenzyl, 15% compound of formula (I-2), 8% xylene, 12% cyclohexanone, 4% calcium dodecylbenzenesulfonate, 8% ethylene oxide-propylene oxide copolymer, 5% ethylene glycol, 0.5% glycerol, 0.05% silicone defoamer, 0.1% xanthan gum, 0.01% benzoic acid, and deionized water to make up the balance;

[0068] Preparation method: According to the formula ratio of the embodiment, the active ingredients are dissolved in the solvent and an emulsifier is added to dissolve it into a uniform oil phase. Deionized water and antifreeze are mixed together to form a uniform water phase; under high-speed shear, the water phase is added to the oil phase to form a well-dispersed water emulsion product.

[0069] Indoor toxicity

[0070] Examples Reference Pesticide Indoor Bioassay Test Guidelines Part 13: Leaf Disk Spray Method NT / T 1154.13-2008; Part 7: Determination of Combined Effects of Mixtures NT / T 1154.7-2006

[0071] Test target: Tetranychus truncates Ehara

[0072] Select female adult mites raised indoors with consistent physiological status. The temperature is (25±1)°C, the relative humidity is 65%±5%, and the photoperiod is 16 / 8h (L / D).

[0073] Select cotton leaves of uniform growth, use a hole puncher to make leaf discs with a diameter of 2 cm, place agar in a culture dish to keep it moist, place filter paper on it, and place leaf discs on the filter paper, with 3 leaf discs per dish, and inoculate adult mites raised indoors onto the leaf discs, with 10 to 15 mites on each leaf disc.

[0074] Preparation: Dissolve the original drug in acetone and dilute with a 0.1% Tween-80 solution. Prepare separate single-dose stock solutions. Design five groups of mixes based on the mixing objectives and drug activity. Prepare five series of mass concentrations for each single dose and each mix using the same ratio.

[0075] Chemical treatment: Place the petri dish on the bottom plate of a Potter spray tower and spray with a volume of 1 ml. Allow the solution to settle for 1 minute before removing it from the dish and transferring it to rearing conditions. Each treatment should be replicated at least four times, with at least 120 insects tested at each dose. A blank control containing no chemical (including all organic solvents and emulsifiers) should be used.

[0076] Data Statistics and Analysis: 48 hours after treatment, examine the test insects for mortality and record the total number of mites and the number of dead mites. Based on the survey data, calculate the adjusted mortality rate for each treatment.

[0077] Calculate using the following formula, with the results rounded to two decimal places:

[0078]

[0079] Where:

[0080] P——mortality rate, in percentage (%);

[0081] K——indicates the number of dead insects, the unit is head;

[0082] N——represents the total number of insects processed, in heads.

[0083]

[0084] Where:

[0085] P1——adjusted mortality rate, in percentage (%);

[0086] P t ——Treatment mortality rate, expressed in percentage (%);

[0087] P0 - blank control mortality rate, in percentage (%).

[0088] If the control mortality rate is less than 5%, no correction is required; if the control mortality rate is between 5% and 20%, correction should be made; if the control mortality rate is greater than 20%, the test needs to be repeated.

[0089] The data were processed using the probability value analysis method. The LC of the toxicity regression line can be obtained by using the IBM SPSS Statistics 20 statistical analysis system. 50 The activity of the test agent on the biological test material was evaluated by using the b value and its 95% confidence limit.

[0090] The co-toxicity coefficient (CTC value) of the mixture is calculated as follows:

[0091]

[0092] Where:

[0093] ATI - measured toxicity index of mixture;

[0094] S——LC of standard acaricide 50 , the unit is milligrams per liter (mg / L);

[0095] M——LC of the mixture 50 , the unit is milligrams per liter (mg / L).

[0096] TTI=TI A *P A +TI B *P B

[0097] Where:

[0098] TTI – Theoretical Toxicity Index of Mixtures;

[0099] TI A ——Agent toxicity index;

[0100] P A ——The percentage of agent A in the mixture, in percentage (%);

[0101] TI B ——Toxicity index of agent B;

[0102] P B——The percentage of agent B in the mixture, in percentage (%).

[0103]

[0104] Where:

[0105] CTC – Co-toxicity coefficient;

[0106] ATI - measured toxicity index of mixture;

[0107] TTI - Theoretical Toxicity Index of Mixture.

[0108] A co-toxicity coefficient (CTC) of 120 or higher indicates a synergistic effect; a co-toxicity coefficient (CTC) of 80 or lower indicates an antagonistic effect; and a co-toxicity coefficient (CTC) of 80 or lower indicates an additive effect.

[0109] Test results: The test results show that pyridabenz has a high toxicity to Tetranychus truncatus (female adult mites), LC 50 The LC values ​​of diphenyl sulfide compounds Ⅰ-1, Ⅰ-2 and Ⅰ-3 for Tetranychus truncatus (female adult) are 12.645 mg / L. 50 The concentrations of pyridabenz and compound I-1 were 10.305 mg / L, 30.215 mg / L, and 41.091 mg / L, respectively. Pyridabenz and compound I-1 showed a synergistic effect in the range of 1:30 to 25:1; pyridabenz and compound I-2 showed a synergistic effect in the range of 1:25 to 30:1; and pyridabenz and compound I-3 showed a synergistic effect in the range of 1:25 to 30:1.

[0110] Table 1 Combined toxicity test of different ratios of pyridabenzyl and compound Ⅰ-1 against Tetranychus truncatus (female adult mites)

[0111]

[0112]

[0113] Table 2 Combined toxicity test of different ratios of pyridabenzyl and compound Ⅰ-2 against Tetranychus truncatus (female adult mites)

[0114]

[0115] Table 3 Combined toxicity test of different ratios of pyridabenzyl and compound I-3 against Tetranychus truncatus (female adult mites)

[0116]

[0117]

[0118] Example 2 Field Trial Control of Corn Tetranychus truncatus

[0119] Test crops: corn, variety: Denghai No. 9;

[0120] Test subjects: Tetranychus truncatus;

[0121] Experimental location: Haifeng Village, Haiyang District, Yantai City, where the corn fields are flat and the soil fertility is medium.

[0122] Test time: June 2021. The test was carried out during the peak period of corn truncate spider mite occurrence, and only one application of pesticide was performed during the entire test process.

[0123] Experimental treatment: Each plot was randomly arranged in blocks, with 20m 2 , repeat 4 times.

[0124] Test drugs and dosage

[0125] Table 4 Experimental treatment and dosage

[0126] Experimental treatment Experimental drugs Dilution multiple 1 15% pyridabenin·Formula (I-1) compound emulsifiable concentrate (7:8) 3000 2 15% pyridabenin·Formula (I-2) compound emulsifiable concentrate (7:8) 3000 3 15% pyridabenin·Formula (I-3) compound emulsifiable concentrate (7.5:7.5) 3000 4 10% pyridabenzan EC 2500 5 20% fenpyroximate suspension 2500

[0127] The weather was good on the day and during the test.

[0128] Survey Method: Active mite counts were collected before spraying and 1, 7, and 15 days after spraying. Twenty corn plants were randomly surveyed per treatment. The number of active mites was recorded on the top, middle, and bottom leaves of each plant, and the population reduction rate was calculated.

[0129] Calculation method of drug efficacy: The drug efficacy is calculated according to the following formula:

[0130]

[0131] During the experiment, corn in each treatment plot grew well and no pesticide damage was observed in any treatment.

[0132] Test results:

[0133] Table 5 Field control test of Tetranychus truncatus with pesticides

[0134]

[0135]

[0136] Note: The control efficacy (%) in the above table is the average of each replicate. Lowercase letters represent significant differences at the 5% level, and uppercase letters represent significant differences at the 1% level.

[0137] Table 6 Field pesticide control test of Tetranychus truncatus

[0138]

[0139] Note: Same as above table.

[0140] Table 6 Field pesticide control test of Tetranychus truncatus

[0141]

[0142] Note: Same as above table.

[0143] According to the field investigation, no adverse reaction of leaves to the pesticide was found in any treatment, indicating that all treatments were safe for corn growth at the concentrations used in the experiment.

[0144] Indoor toxicity assays and field tests on corn have shown that the acaricidal composition of the present invention demonstrates excellent control efficacy against phytophagous mites. The acaricidal composition or formulation obtained by compounding the present invention exhibits significant control efficacy, outperforming single agents in delaying the development of resistance and prolonging drug retention. Furthermore, no phytotoxicity was observed with the compounded formulation in the tests, demonstrating that the enhanced synergistic acaricidal efficacy of the acaricidal composition or formulation can reduce production and usage costs, while maintaining crop safety.

[0145] Although the present invention has been described in detail above using general descriptions and specific implementation plans, it is obvious to those skilled in the art that some modifications or improvements can be made thereto based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A mite-killing composition containing pyridabenz, characterized in that: The pesticide composition comprises an active ingredient A and an active ingredient B, wherein the active ingredient A is pyridabenzyl and the active ingredient B is a diphenyl sulfide compound as shown in formula (I):

2. The acaricidal composition according to claim 1, characterized in that In the active ingredient B formula (I), R1 is selected from CF3, F, and Br; the specific structure is as follows:

3. The acaricidal composition according to claim 1, characterized in that The mass ratio of the active ingredient A to the active ingredient B is 1:40 to 30:

1.

4. The acaricidal composition according to claim 1, characterized in that The mass ratio of the pyridabenz to the compound (I-1) is 1:30 to 25:1; the mass ratio of the pyridabenz to the compound (I-2) is 1:35 to 30:1; and the mass ratio of the pyridabenz to the compound (I-3) is 1:25 to 30:

1.

5. The acaricidal composition according to claim 1, characterized in that Based on the total weight of the pesticide composition being 100 wt%, the sum of the content of the active ingredient A and the active ingredient B in the pesticide composition is 1 to 95 wt%; Preferably, the total content of the active ingredient A and the active ingredient B in the pesticide composition is 5 to 80 wt%.

6. The acaricidal composition according to claim 1, characterized in that In addition to the active ingredients, the pesticide composition also includes auxiliary ingredients acceptable to agricultural biology, and the auxiliary ingredients are selected from one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoaming agents, solvents, preservatives, stabilizers, synergists or carriers.

7. The acaricidal composition according to claim 6, characterized in that The pesticide composition can be prepared into an agriculturally acceptable formulation, wherein the formulation is selected from a solid formulation and / or a liquid formulation; The solid preparations include powders, granules, pellets, tablets, strips, wettable powders, oil-dispersible powders, emulsion powders, water-dispersible granules, emulsion granules, water-dispersible tablets, soluble powders, soluble tablets or soluble granules; The liquid preparations include soluble solutions, soluble gels, oils, film-spreading oils, emulsifiable concentrates, latexes, dispersible solutions, ointments, aqueous emulsions, oil emulsions, microemulsions, lipid suspensions, microcapsule suspensions, oil suspensions, dispersible oil suspensions, suspoemulsions, microcapsule suspension-suspension concentrates, microcapsule suspension-water emulsions or microcapsule suspension-suspoemulsions.

8. The acaricidal composition according to claim 7, characterized in that The solid preparation is selected from wettable powder, water-dispersible granules, and soluble granules; the liquid preparation is selected from emulsifiable concentrate, aqueous emulsion, and suspension.

9. Use of the acaricidal composition according to any one of claims 1 to 8 for controlling phytophagous pest mites, wherein the phytophagous pest mites are members of the Tetranychidae, Mylidae and / or Eupodidae families.

10. The use according to claim 9, characterized in that The acaricidal composition and / or its preparation is applied at an effective dose to the harmful mites to be controlled or the medium where they grow.

Citation Information

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