A miticidal composition containing sulfiflumin and its use

Abstract

The present invention belongs to the technical field of pesticidal acaricides, and discloses a miticidal composition containing sulfiflumin and its use. The miticidal composition comprises active ingredient A and active ingredient B. Active ingredient A is sulfiflumin, and active ingredient B is any one of clofentezine, flufenzine, hexythiazox, and propargite. The mass ratio of active ingredient A to active ingredient B is 1:52 to 56:1. The miticidal composition of the present invention has a significant control effect on Panonychus citri, reduces the harm of pest mites to plants, and slows down the development of pest mite resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of pesticidal acaricides, and particularly relates to a miticidal composition containing sulfiflumin and its use. Background Art

[0002] Panonychus citri is one of the main pests of citrus fruit trees. It overwinters as eggs and adult mites in branch cracks and on the back of leaf surfaces, and its developmental duration shortens with the increase of temperature. Because Panonychus citri has a fast reproduction rate, many generations, and strong drug resistance, it brings great difficulties to the prevention and control work. If the prevention and control effect is not ideal or not timely, many white dots will appear on the front of the damaged leaves, losing luster. In severe cases, the leaves will turn completely pale, resulting in a large amount of defoliation, affecting photosynthesis. When the fruits are severely damaged, fruit drop will occur, and the surface of the fruits will turn grayish-white, affecting their quality and yield, causing great economic impact on fruit farmers.

[0003] In recent years, due to the non-standard use of pesticides by farmers, the resistance of Panonychus citri to pesticides has become stronger and stronger, and the control effect of a single agent has become worse and worse. Therefore, screening new acaricides with high efficiency and low toxicity for controlling Panonychus citri is still an urgent problem to be solved in current citrus production. The applicant has found through experimental research that the reasonable compounding of sulfiflumin with any one of clofentezine, flufenzine, hexythiazox or propargite has a dual action mechanism, and has a better control effect compared with a single agent and is not likely to produce drug resistance. Summary of the Invention

[0004] Based on the above, the object of the present invention is to provide a miticidal composition containing sulfiflumin with excellent control effect on harmful mites. The miticidal composition or its preparation can significantly enhance the drug effect, has good quick-acting property, long-lasting effect, is safe for a variety of plants and target organisms, can effectively reduce the usage amount of pesticides, reduce production costs, and reduce environmental pollution.

[0005] To achieve the above object, the present invention adopts the following technical solution: a miticidal composition containing sulfiflumin, the active ingredients of the miticidal composition include active ingredient A and active ingredient B, the active ingredient A is sulfiflumin, and the active ingredient B is any one of clofentezine, flufenzine, hexythiazox or propargite;

[0006] Further, the mass ratio of active ingredient A to active ingredient B in the miticidal composition is 1:52 to 56:1.

[0007] Further, the active ingredient B is clofentezine, and the mass ratio of active ingredient A to active ingredient B is 1:26 to 48:1;

[0008] Further, the active ingredient B is clofentezine, and the mass ratio of the active ingredient A to the active ingredient B is 1:13 to 32:1;

[0009] Further, the active ingredient B is flufenzine, and the mass ratio of the active ingredient A to the active ingredient B is 1:25 to 40:1;

[0010] Further, the active ingredient is flufenzine, and the mass ratio of the active ingredient A to the active ingredient B is 1:12 to 20:1;

[0011] Further, the active ingredient B is hexythiazox, and the mass ratio of the active ingredient A to the active ingredient B is 1:45 to 35:1;

[0012] Further, the active ingredient B is hexythiazox, and the mass ratio of the active ingredient A to the active ingredient B is 1:35 to 25:1;

[0013] Further, the active ingredient B is propargite, and the mass ratio of the active ingredient A to the active ingredient B is 1:40 to 20:1;

[0014] Further, the active ingredient B is propargite, and the mass ratio of the active ingredient A to the active ingredient B is 1:30 to 10:1;

[0015] Further, in addition to the active ingredients, the acaricidal composition further comprises auxiliary ingredients, and the auxiliary ingredients are one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreezing agents, defoaming agents, solvents, preservatives, stabilizers, synergists, binders, fillers or carriers.

[0016] Further, the acaricidal composition can be prepared into a preparation dosage form permitted in pesticides, and the preparation dosage form is a suspension agent, wettable powder, water dispersible granule, emulsion in water, emulsifiable concentrate, emulsifiable concentrate or microemulsion.

[0017] Further, the preparation dosage form is a suspension agent, wettable powder, water dispersible granule.

[0018] The present invention also discloses the use of the acaricidal composition as described above for controlling harmful mites.

[0019] Further, the harmful mites are agricultural, forestry or storage harmful mites.

[0020] Further, the harmful mites are Tetranychus urticae, Tetranychus cinnabarinus, Panonychus citri;

[0021] Further, the harmful mites are Panonychus citri.

[0022] Further, apply the acaricidal composition to mites and the medium where mites occur.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) The acaricidal composition of the present invention combines compounds with different action mechanisms and has a significant synergistic effect on mites.

[0025] (2) Compared with single agents, the acaricidal composition of the present invention reduces the dosage of pesticides, reduces production costs, and at the same time reduces the environmental pollution of pesticides.

[0026] (3) The acaricidal composition of the present invention slows down the generation of mite resistance, is safe for crops and other non-target organisms, reduces the pesticide residues in agricultural products, and is safe and efficient. Specific Embodiments

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the preparation examples and specific examples of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0028] Preparation Examples of Preparations:

[0029] Preparation Example 1: 12% sulfiflumin·clofentezine suspension concentrate (1:5)

[0030] Formulation composition: 2% sulfiflumin, 10% clofentezine, 1% Guerbet alcohol polyoxyethylene ether, 3% alkylphenol polyoxyethylene ether phosphate, 1% sodium polycarboxylate, 0.25% xanthan gum, 5% glycerol, 1% sodium sorbate, 0.5% silicone oil, deionized water to make up the balance;

[0031] Preparation method: According to the formula ratio, place the active ingredient, surfactant and other functional auxiliaries in the reaction kettle in turn, add water and mix evenly, and obtain the suspension concentrate product through high-speed shearing, wet grinding and finally homogenization and filtration.

[0032] Preparation Example 2: 20% sulfiflumin·clofentezine wettable powder (1:1)

[0033] Formulation composition: 10% sulfiflumin, 10% clofentezine, 8% sodium lignosulfonate, _2% sodium dodecyl sulfate, 5% dispersant NNO, 5% silica white, kaolin to make up the balance;

[0034] Preparation method: According to the formulation composition, mix the active ingredient, dispersant, wetting agent and filler, stir evenly in the stirring kettle, and perform multiple pulverizations and mix evenly by an air flow pulverizer to prepare the wettable powder of the composition of the present invention.

[0035] Preparation Example 3: 27% Sulfiflumin·Tetradifon Water Dispersible Granules (8:1)

[0036] Formulation composition: 24% Sulfiflumin, 3% Tetradifon, 6% Sodium Lignosulfonate, 3% Nekal BX, 10% Naphthalene Sulfonic Acid Formaldehyde Condensate, 5% White Sugar, Kaolin to make up the balance.

[0037] Preparation method: According to the formula ratio, add the active ingredients to the carrier, and add surfactants and other functional auxiliaries thereto, mix, add 10 - 25% of water after airflow comminution, and then obtain the water dispersible granule product through kneading, granulation, drying, and screening; or spray water, granulate, and dry the pulverized powder in a fluidized bed granulator, and then screen to obtain the water dispersible granule product.

[0038] Preparation Example 4: 18% Sulfiflumin·Flufenzine Suspension Concentrate (5:1)

[0039] Formulation composition: 15% Sulfiflumin, 3% Flufenzine, 2% Guerbet Alcohol Polyoxyethylene Ether, 2% Alkyl Aryl Polyoxyethylene Ether Polypropylene Oxide Ether, 3% Triphenylethylene Phenyl Ether Ethoxylate Phosphate, 1% Sodium Polycarboxylate, 1.5% Magnesium Aluminum Silicate, 0.1% Carboxyethyl Cellulose, 0.5% Potassium Benzisothiazolinone, 5% Glycerol, 0.5% Silicon Oil, Deionized Water to make up the balance;

[0040] Preparation method: The same as Preparation Example 1.

[0041] Preparation Example 5: 25% Sulfiflumin·Flufenzine Wettable Powder (1:4)

[0042] Formulation composition: 5% Sulfiflumin, 20% Flufenzine, 8% Calcium Lignosulfonate, 2% Sodium Dodecyl Sulfate, 5% Sodium Polycarboxylate Salt, 5% White Carbon Black, Kaolin to make up the balance;

[0043] Preparation method: The same as Preparation Example 2.

[0044] Preparation Example 6: 20% Sulfiflumin·Flufenzine Water Dispersible Granules (1:9)

[0045] Formulation composition: 2% Sulfiflumin, 18% Flufenzine, 10% Lignosulfonate, 8% Naphthalene Sulfonate Formaldehyde Condensate, 2% Sodium Dodecyl Sulfate, 5% White Carbon Black, 30% Starch, Kaolin to make up the balance.

[0046] Preparation method: The same as Preparation Example 3.

[0047] Preparation Example 7: 24% Sulfiflumin·Hexythiazox Wettable Powder (1.5:22.5)

[0048] Formulation composition: 1.5% Sulfiflumin, 22.5% Hexythiazox, 8% Sodium lignosulfonate, 6% Dispersant NNO, 2% Sodium dodecyl sulfate, Kaolin to make up the balance;

[0049] Preparation method: The same as Preparation Example 2.

[0050] Preparation Example 8: 12% Sulfiflumin·Hexythiazox EC (1:1)

[0051] Formulation composition: 6% Sulfiflumin, 6% Hexythiazox, 20% Propylene glycol methyl ether, 12% Alkylaryl polyoxyethylene polyoxypropylene ether, 3% Calcium dodecylbenzenesulfonate, 10% DMF, Methyl oleate to make up the balance;

[0052] Preparation method: According to the formulation ratio, the metered active ingredients, solvents, and cosolvents are added to a blending kettle and stirred to dissolve them. Then, emulsifiers are added, and the balance is made up with the remaining solvent. After stirring evenly in a stirring kettle and filtering, the EC required by the present invention is obtained.

[0053] Preparation Example 9: 18% Sulfiflumin·Hexythiazox EW (5:1)

[0054] Formulation composition: 15% Sulfiflumin, 3% Hexythiazox, 6% Fatty alcohol polyoxyethylene polyoxypropylene ether, 2% Fatty alcohol polyoxyethylene ether sulfate, 12% Cyclohexanone, 0.25% Xanthan gum, 5% Glycerol, 1% Sodium sorbate, Deionized water to make up the balance;

[0055] Preparation method: According to the formulation ratio, the active ingredients are added together with solvents, emulsifiers, and cosolvents to dissolve them into a uniform oil phase; part of the water, antifreeze, and other pesticide adjuvants are mixed together to form a uniform water phase; while stirring at high speed in a reaction kettle, the oil phase is added to the water phase and sheared for about half an hour to form an oil-in-water type EW.

[0056] Preparation Example 10: 13% Sulfiflumin·Hexythiazox ME (12:1)

[0057] Formulation composition: 12% Sulfiflumin, 1% Hexythiazox, 2% Alkylphenol polyoxyethylene ether, 15% Triphenylvinylphenol polyoxyethylene ether, 2% Fatty alcohol polyoxyethylene ether phosphate salt, 10% Cyclohexanone, 0.5% Penetrant JFC, 5% Ethylene glycol, Deionized water to make up the balance;

[0058] Preparation method: According to the formulation composition, the active ingredient, organic solvent, surfactant, co-surfactant and other auxiliaries are stirred and mixed evenly to form an oil phase, and then the aqueous phase is added. After slightly stirring and shearing, it becomes a microemulsion.

[0059] Preparation Example 11: 20% sulfiflumin·hexythiazox suspension concentrate (3:1)

[0060] Formulation composition: 15% sulfiflumin, 5% hexythiazox, 2% block polyether, 5% styrylphenol polyoxyethylene ether phosphate, 1% sodium lignosulfonate, 1% isomeric tridecanol polyoxyethylene ether, 0.2% xanthan gum, 5% ethylene glycol, 0.3% sodium benzoate, 1% silicone defoamer, deionized water to make up the balance;

[0061] Preparation method: The same as Preparation Example 1.

[0062] Preparation Example 12: 22% sulfiflumin·propargite emulsifiable concentrate (7:15)

[0063] Formulation composition: 7% sulfiflumin, 15% propargite, 18% N-methylpyrrolidone, 12% alkylaryl polyoxyethylene ether polyoxypropylene ether, 3% calcium dodecylbenzenesulfonate, 8% DMF, methyl oleate to make up the balance;

[0064] Preparation method: The same as Preparation Example 8.

[0065] Preparation Example 13: 21% sulfiflumin·propargite wettable powder (1:20)

[0066] Formulation composition: 1% sulfiflumin, 20% propargite, 5% sodium lignosulfonate, 4% dispersant NNO, 2% sodium succinate sulfonate, 30% silica, kaolin to make up the balance;

[0067] Preparation method: According to the formulation composition, propargite and silica are mixed evenly, and then the active ingredient, dispersant, wetting agent and filler are mixed. They are evenly stirred in a stirring kettle and pulverized and mixed evenly by an air flow pulverizer for multiple times to obtain the wettable powder of the composition of the present invention.

[0068] Preparation Example 14: 13% sulfiflumin·propargite emulsion in water (1:12)

[0069] Formulation composition: 1% sulfiflumin, 12% propargite, 15% acetophenone, 8% alkylaryl polyoxyethylene ether polyoxypropylene ether, 2% styrylphenol polyoxyethylene ether phosphate, 0.2% xanthan gum, 5% glycerol, 0.2% sodium benzoate, deionized water to make up the balance.

[0070] Preparation method: The same as Preparation Example 9.

[0071] Preparation Example 15: 22% Sulfiflurin·Propargite Microemulsion (10:1)

[0072] Formulation composition: 20% Sulfiflurin, 2% Propargite, 10% Triphenylethylphenol Polyoxyethylene Ether, 5% Cyclohexanone, 8% Xylene, 1% Sodium Dodecylbenzenesulfonate, 4% Ethylene Glycol, 3% Sorbitan Polyoxyethylene Ether, Deionized water to make up the balance;

[0073] Preparation method: The same as Preparation Example 10.

[0074] Example 1: Indoor Biological Test

[0075] Test basis: The test refers to NY / T 1154.12 - 2008 "Pesticide Indoor Bioassay Test Guidelines Insecticides Part 12: Slide Immersion Method for Tetranychus".

[0076] Test target: Panonychus citri.

[0077] Test preparation: Cut the double-sided tape into 2 cm long and stick it to one end of the slide. Select healthy mites and stick their backs to the double-sided tape (do not stick the mite legs, antennae and mouthparts). 30 mites per slide, put them into a container padded with a wet sponge, cover the lid and place them at (25 ± 1)°C. After 2 h, examine under a microscope, remove the dead and injured individuals, and make up to 30 mites per slide.

[0078] [[ID=2...]]Drug preparation: Dissolve the test drugs with a suitable solvent, and prepare 5 series of mass concentration gradients for each single agent and the mixture of each group ratio according to the mixing purpose and drug activity design.

[0079] Drug treatment: Immerse the slide in the liquid medicine and gently shake for 5 s, then take it out, absorb the excess liquid medicine with filter paper, place it in a white porcelain dish padded with a wet sponge, and cover it with a plastic film with good light transmittance. Each treatment has 4 replicates, and a treatment without drugs (including all organic solvents and emulsifiers) is set as a blank control.

[0080] Rearing and observation: Place the container with test insects at a temperature of (25 ± 1)°C and a photoperiod of L:D = (16:8) h for rearing and observation.

[0081] Test investigation: Examine under a microscope 48 h after treatment, check the death of test insects, and record the total number of insects and the number of dead insects respectively.

[0082] Use DPS data processing software for data processing, calculate the virulence regression equation, correlation coefficient, LC 50 value, and compare the virulence of the LC 50 values of each treatment.

[0083] Calculate the mortality rate for each treatment based on the survey data. Calculate according to the following formula:

[0084]

[0085] In the formula:

[0086] P —— Mortality rate, unit is percentage (%).

[0087] K —— Represents the number of dead insects, unit is head.

[0088] N —— Represents the total number of insects in the treatment, unit is head.

[0089]

[0090] In the formula:

[0091] P1 —— Corrected mortality rate, unit is percentage (%).

[0092] P t —— Mortality rate of the treatment, unit is percentage (%).

[0093] P0 —— Mortality rate of the blank control, unit is percentage (%).

[0094] If the control mortality rate < 5%, no correction is required; if the control mortality rate is between 5% and 20%, correction should be made according to formula (2); if the control mortality rate > 20%, the experiment needs to be redone.

[0095] The co-toxicity coefficient (CTC value) of the mixture is calculated according to formulas (3), (4), and (5):

[0096]

[0097] In the formula:

[0098] ATI —— Measured toxicity index of the mixture;

[0099] S —— LC of the standard acaricide 50 , unit is milligrams per liter (mg / L);

[0100] M —— LC of the mixture 50 , unit is milligrams per liter (mg / L).

[0101] TTI = TI A ×P A +TI B ×P B

[0102] In the formula:

[0103] TTI —— Theoretical toxicity index of the mixture;

[0104] TI A ——Toxicity index of agent A;

[0105] P A ——Percentage content of agent A in the mixture, in percentage (%);

[0106] TI B ——Toxicity index of agent B;

[0107] P B ——Percentage content of agent B in the mixture, in percentage (%).

[0108]

[0109] Where:

[0110] CTC——Coefficient of co-toxicity;

[0111] ATI——Measured toxicity index of the mixture;

[0112] TTI——Theoretical toxicity index of the mixture.

[0113] When the coefficient of co-toxicity CTC of the compounding is ≥ 120, it shows a synergistic effect; when CTC ≤ 80, it shows an antagonistic effect; when 80 < CTC < 120, it shows an additive effect.

[0114] The results of the indoor toxicity test are shown in the following table:

[0115] Table 1 Results of the indoor bioactivity test of the compound of sulfiflumin and clofentezine against Panonychus citri

[0116]

[0117]

[0118] It can be seen from the results of the indoor bioactivity test (Table 1) that compounding sulfiflumin and clofentezine has excellent control effects against Panonychus citri at a certain mass ratio. When the mass ratio of sulfiflumin to clofentezine is 1:26 to 48:1, the coefficient of co-toxicity against Panonychus citri is greater than 120, showing a synergistic effect. Among them, when the mass ratio of the two is 1:3, the LC 50 is 3.4246 mg / L, the coefficient of co-toxicity is the largest, 186.911, and the synergistic effect is significant; while when the mass ratio of the two is 1:52 and 56:1, the coefficient of co-toxicity is less than 120, showing an additive effect.

[0119] Table 2 Indoor bioactivity test of the compound of sulfiflumin and flufenzine against Panonychus citri

[0120]

[0121] It can be seen from the results of the indoor bioactivity test (Table 2) that the compounding of sulfiflumin and flufenzine has good control effects on Panonychus citri at a certain mass ratio. The compounding mass ratio of sulfiflumin and flufenzine from 1:25 to 40:1 shows a synergistic effect on Panonychus citri. Among them, when the mass ratio of the two is 1:8, the LC 50 for Panonychus citri is 2.9623 mg / L, and the co-toxicity coefficient is up to 197.792, with a significant synergistic effect; while when the mass ratio of the two is 1:50 to 1:32 and 50:1, the co-toxicity coefficient is less than 120, showing an additive effect.

[0122] Table 3 Indoor bioactivity test of the compounding of sulfiflumin and hexythiazox against Panonychus citri

[0123]

[0124]

[0125] It can be seen from the results of the indoor bioactivity test (Table 3) that the compounding of sulfiflumin and hexythiazox has good control effects on Panonychus citri at a certain mass ratio. The compounding mass ratio of sulfiflumin and hexythiazox from 1:45 to 35:1 shows a synergistic effect on Panonychus citri. Among them, when the mass ratio of the two is 1:5, the LC 50 for Panonychus citri is 4.4257 mg / L, and the co-toxicity coefficient is up to 188.375, with a significant synergistic effect; while when the mass ratio of the two is 45:1, the co-toxicity coefficient is less than 120, showing an additive effect.

[0126] Table 4 Indoor bioactivity test of the compounding of sulfiflumin and propargite against Panonychus citri

[0127]

[0128] It can be seen from the results of the indoor bioactivity test (Table 4) that the compounding of sulfiflumin and propargite has good control effects on Panonychus citri at a certain mass ratio. The compounding mass ratio of sulfiflumin and propargite from 1:40 to 20:1 shows a synergistic effect on Panonychus citri. Among them, when the mass ratio of the two is 1:15, the LC 50 for Panonychus citri is 14.9513 mg / L, and the co-toxicity coefficient is up to 213.314, with a significant synergistic effect; while when the mass ratio of the two is 30:1 to 40:1, the co-toxicity coefficient is less than 120, showing an additive effect.

[0129] Example 2: Field efficacy test

[0130] Test site: The test site is located in the Lijiazhai citrus orchard in Yongfu Town, Yongfu County, Guangxi. The soil texture of the test site is acidic moist sandy soil. The fertility of the test site is above average, the terrain is flat, and drainage and irrigation are convenient.

[0131] Experimental crops: citrus (Nanfeng mandarin oranges), 5 years old, growing well.

[0132] Experimental Design: Following the guidelines for pesticide field efficacy trials, 9 treatments and a blank control were set up, totaling 10 treatments. Each treatment had four replicates, resulting in 40 plots. Plots were arranged in randomized blocks, with two citrus trees per plot. During the peak season of citrus spider mite infestation, canopy spraying was performed using a WS-16 knapsack manual sprayer with a single hollow cone nozzle and an operating pressure of 0.2-0.4 MPa. Spray was applied at the designed multiple to ensure thorough coverage of both the front and back of the leaves.

[0133] Survey method: Investigate the insect population base before spraying, and survey once every 3, 15, and 30 days after spraying. In each plot, survey two trees, and survey each tree in five directions: east, south, west, north, and center. In each direction, survey five leaves at a fixed point, check the number of live mites on the front and back of the leaves, and calculate the control effect.

[0134] Calculation method of drug efficacy:

[0135]

[0136]

[0137] Field efficacy test results and analysis:

[0138] Table 5 Field efficacy test results

[0139]

[0140] Impact on crop safety: After observation, all test drugs were safe for citrus, no phytotoxicity was observed after application, and citrus grew normally.

[0141] Impact on other pests and diseases: No other pests were observed during the trial period, and no obvious adverse effects of the test agents on natural enemies and other organisms were observed.

[0142] As can be seen from Table 5, 3 days after treatment, the control effects of 9 acaricides against Panonychus citri were 55.11% - 91.30%. Among them, the control effects of 20% sulfiflumin·clofentezine wettable powder (1:1), 18% sulfiflumin·flufenzine suspension concentrate (5:1), 12% sulfiflumin·hexythiazox emulsifiable concentrate (1:1), and 13% sulfiflumin·propargite emulsion in water (1:12) were 88.17%, 91.30%, 86.66%, and 85.17% respectively, which were significantly higher than those of 20% clofentezine suspension concentrate, 36% flufenzine suspension concentrate, 5% hexythiazox emulsifiable concentrate, 30% propargite wettable powder, and 20% sulfiflumin suspension concentrate. 15 days after treatment, the control effects of the 9 acaricides all increased compared with those 3 days after treatment. The control effects of 20% sulfiflumin·clofentezine wettable powder (1:1), 18% sulfiflumin·flufenzine suspension concentrate (5:1), 12% sulfiflumin·hexythiazox emulsifiable concentrate (1:1), and 13% sulfiflumin·propargite emulsion in water (1:12) were all above 92%. 15 days after treatment, the control effects of 20% sulfiflumin·clofentezine wettable powder (1:1), 18% sulfiflumin·flufenzine suspension concentrate (5:1), and 12% sulfiflumin·hexythiazox emulsifiable concentrate (1:1) were all above 92%.

[0143] In summary, the acaricidal compositions of each treatment all showed good fast-acting and long-lasting effects, and had good safety, so they could be used in the production for the control of Panonychus citri.

[0144] Although the present invention has been described in detail with general descriptions and specific embodiments above, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of the present invention claimed.

Claims

1. A miticidal composition containing sulfiflumin, characterized in that, The active ingredients of the acaricidal composition comprise active ingredient A and active ingredient B. The active ingredient A is sulfiflumin, and the active ingredient B is clofentezine. The mass ratio of the active ingredient A to the active ingredient B is 1:26 to 48:

1.

2. The acaricidal composition according to claim 1, wherein The mass ratio of the active ingredient A to the active ingredient B is 1:13 to 32:

1.

3. The acaricidal composition according to claim 1, wherein In addition to the active ingredients, the acaricidal composition further comprises auxiliary ingredients, which are one or more of wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreezing agents, defoaming agents, solvents, preservatives, stabilizers, synergists, binders, fillers or carriers.

4. The acaricidal composition according to claim 1, characterized in that, The acaricidal composition can be prepared into a preparation dosage form permitted in pesticides, and the preparation dosage form is a suspension concentrate, wettable powder, water dispersible granule, emulsion in water, emulsifiable concentrate or microemulsion.

5. The acaricidal composition according to claim 4, wherein The preparation dosage form is a suspension concentrate, wettable powder, water dispersible granule.

6. Use of the acaricidal composition according to any one of claims 1-5 for controlling Panonychus citri.

7. The use according to claim 6, characterized in that, Apply the acaricidal composition to Panonychus citri and the medium where Panonychus citri occurs.

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