A sulfiflumin-containing acaricidal composition and use thereof

Abstract

The application belongs to the technical field of pesticide mite-killing, and discloses a sulfiflumin-containing mite-killing composition and application thereof. The mite-killing composition comprises active ingredient A and active ingredient B. The active ingredient A is sulfiflumin, the active ingredient B is any one of clofentezine, flucycloxuron, hexythiazox and propargite, and the mass ratio of the active ingredient A to the active ingredient B is 1:52-56:1. The mite-killing composition has a significant mite-killing effect on citrus red mites, reduces the harm of the mites to plants, and slows down the development of mite resistance.

Description

[0001] This invention application is a divisional application of application number 202311527884.1, filed on November 16, 2023, entitled "An acaricide composition containing sulfiflumin and its use therein". Technical Field

[0002] This invention belongs to the field of pesticide acaricide technology, specifically relating to an acaricide composition containing sulfiflumin and its uses. Background Technology

[0003] Citrus red spider mites are one of the major pests of citrus trees. They overwinter as eggs and adult mites in branch crevices and on the undersides of leaves, with their developmental period shortening as temperatures rise. Because citrus red spider mites reproduce rapidly, have many generations, and are highly resistant to pesticides, control is extremely difficult. Ineffective or untimely control results in numerous small white spots appearing on the upper surface of affected leaves, causing them to lose their luster and, in severe cases, turn completely pale, leading to significant leaf drop and impairing photosynthesis. Severe infestation of fruit can cause fruit drop, resulting in a grayish-white surface on the fruit, affecting its quality and yield, and causing substantial economic losses for fruit growers.

[0004] In recent years, due to farmers' improper use of pesticides, citrus red spider mites have become increasingly resistant to pesticides, and the control effect of single pesticides has become increasingly poor. Therefore, screening for new, highly effective, and low-toxicity acaricides to control citrus red spider mites remains an urgent problem to be solved in citrus production. Through experimental research, the applicant has discovered that a reasonable combination of sulfiflumin with any one of tetradifon, flufenoxuron, thiamethoxam, or propargite has a dual mechanism of action, resulting in better control efficacy and less likelihood of developing resistance compared to single pesticides. Summary of the Invention

[0005] Based on the above, the purpose of this invention is to provide a sulfiflumin-containing acaricide composition that has excellent control effect on mites. This acaricide composition or its formulation can significantly enhance efficacy, has good rapid action, long-lasting effect, is safe for a variety of plants and target organisms, and can effectively reduce the amount of pesticides used, reduce production costs, and reduce environmental pollution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sulfiflumin-containing acaricide composition, wherein the active ingredients of the acaricide composition include active ingredient A and active ingredient B, wherein active ingredient A is sulfiflumin, and active ingredient B is any one of tetradifon, flufenoxuron, thiamethoxam or propargite.

[0007] Furthermore, the mass ratio of active ingredient A to active ingredient B in the acaricidal composition is 1:52 to 56:1.

[0008] Furthermore, the active ingredient B is tetradifon, and the mass ratio of active ingredient A to active ingredient B is 1:26 to 48:1;

[0009] Furthermore, the active ingredient B is tetradifon, and the mass ratio of active ingredient A to active ingredient B is 1:13 to 32:1;

[0010] Furthermore, the active ingredient B is flufenoxuron, and the mass ratio of active ingredient A to active ingredient B is 1:25 to 40:1;

[0011] Furthermore, the active ingredient is fluoxetine, and the mass ratio of active ingredient A to active ingredient B is 1:12 to 20:1;

[0012] Furthermore, the active ingredient B is thiamethoxam, and the mass ratio of active ingredient A to active ingredient B is 1:45 to 35:1.

[0013] Furthermore, the active ingredient B is thiamethoxam, and the mass ratio of active ingredient A to active ingredient B is 1:35 to 25:1.

[0014] Furthermore, the active ingredient B is propargite, and the mass ratio of active ingredient A to active ingredient B is 1:40 to 20:1;

[0015] Furthermore, the active ingredient B is propargite, and the mass ratio of active ingredient A to active ingredient B is 1:30 to 10:1;

[0016] Furthermore, the acaricide composition contains auxiliary components in addition to the active ingredients. These auxiliary components are one or more of the following: wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoamers, solvents, preservatives, stabilizers, synergists, binders, fillers, or carriers.

[0017] Furthermore, the acaricidal composition can be prepared into a pesticide-permitted formulation, wherein the formulation is a suspension concentrate, wettable powder, water-dispersible granule, water-in-oil emulsion, emulsifiable concentrate, or microemulsion.

[0018] Furthermore, the formulation is a suspension, wettable powder, or water-dispersible granule.

[0019] The present invention also discloses the use of the acaricidal composition described above for the control of harmful mites.

[0020] Furthermore, the mites mentioned are agricultural, forestry, or storage mites.

[0021] Furthermore, the harmful mites mentioned are two-spotted spider mites, carmine spider mites, and citrus red spider mites;

[0022] Furthermore, the mites mentioned are citrus red spider mites.

[0023] Furthermore, the acaricidal composition is applied to the harmful mites and the media in which they occur.

[0024] The beneficial effects of this invention are as follows:

[0025] (1) The acaricidal composition of the present invention combines compounds with different mechanisms of action, and has a significant synergistic effect on harmful mites;

[0026] (2) Compared with single agents, the acaricide composition of the present invention reduces the amount of pesticide used, reduces production costs, and reduces pesticide pollution to the environment.

[0027] (3) The acaricide composition of the present invention slows down the development of pesticide resistance in harmful mites, is safe for crops and other non-target organisms, reduces pesticide residues in agricultural products, and is safe and efficient. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the formulation preparation examples and specific examples. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Formulation preparation example:

[0030] Preparation Example 1: 12% sulfiflumin·tetradacin suspension (1:5)

[0031] Formula composition: 2% sulfiflumin, 10% tetradifon, 1% guerbert 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;

[0032] Preparation method: According to the formula ratio, the active ingredients, surfactants and other functional additives are placed in the reaction vessel in sequence, water is added and mixed evenly, and then subjected to high-speed shearing, wet sand milling and finally homogenization filtration to obtain the suspension product.

[0033] Preparation Example 2: 20% sulfiflumin·tetradacin wettable powder (1:1)

[0034] Formula composition: 10% sulfiflumin, 10% tetradifon, 8% sodium lignosulfonate, 2% sodium dodecyl sulfate, 5% dispersant NNO, 5% silica, kaolin to make up the balance;

[0035] Preparation method: According to the formula composition, the active ingredients, dispersant, wetting agent and filler are mixed and stirred evenly in a stirring tank. The mixture is then pulverized and mixed evenly multiple times by an air jet mill to prepare the wettable powder of the composition of the present invention.

[0036] Preparation Example 3: 27% sulfiflumin·tetradacin water-dispersible granules (8:1)

[0037] Formula composition: 24% sulfiflumin, 3% tetradifon, 6% sodium lignosulfonate, 3% BX bleaching powder, 10% naphthalenesulfonic acid formaldehyde condensate, 5% white sugar, and kaolin to make up the balance.

[0038] Preparation method: According to the formula ratio, add the active ingredients to the carrier, and add surfactants and other functional additives to it. Mix, and after air jet pulverization, add 10-25% water. Then knead, granulate, dry and sieve to obtain water-dispersible granules; or spray water, granulate and dry the pulverized powder in a fluidized bed granulator, and then sieve to obtain water-dispersible granules.

[0039] Preparation Example 4: 18% sulfiflumin·fluoxetine suspension (5:1)

[0040] Formula composition: 15% sulfiflumin, 3% flufenoxam, 2% gerbert alcohol polyoxyethylene ether, 2% alkyl aryl polyoxyethylene ether polyoxypropylene ether, 3% tristyrene phenol ethoxylate phosphate, 1% sodium polycarboxylate, 1.5% magnesium aluminum silicate, 0.1% carboxyethyl cellulose, 0.5% benzisothiazolinone potassium, 5% glycerol, 0.5% silicone oil, deionized water to make up the balance;

[0041] Preparation method: Same as in preparation example 1.

[0042] Preparation Example 5: 25% sulfiflumin·fluoxetine wettable powder (1:4)

[0043] Formula composition: 5% sulfiflumin, 20% flufenoxam, 8% calcium lignosulfonate, 2% sodium dodecyl sulfate, 5% sodium polycarboxylate, 5% silica, kaolin to make up the balance;

[0044] Preparation method: Same as in preparation example 2.

[0045] Preparation Example 6: 20% sulfiflumin·fluoxetine water-dispersible granules (1:9)

[0046] Formula composition: 2% sulfiflumin, 18% flufenoxuron, 10% lignin sulfonate, 8% naphthalene sulfonate formaldehyde condensate, 2% sodium dodecyl sulfate, 5% silica, 30% starch, and kaolin as a supplement.

[0047] Preparation method: Same as in preparation example 3.

[0048] Preparation Example 7: 24% sulfiflumin·thiamethoxam wettable powder (1.5:22.5)

[0049] Formula composition: 1.5% sulfiflumin, 22.5% thiamethoxam, 8% sodium lignosulfonate, 6% dispersant NNO, 2% sodium dodecyl sulfate, kaolin to make up the balance;

[0050] Preparation method: Same as in preparation example 2.

[0051] Preparation Example 8: 12% sulfiflumin·thiamethoxam emulsifiable concentrate (1:1)

[0052] Formula composition: 6% sulfiflumin, 6% thiamethoxam, 20% propylene glycol methyl ether, 12% alkyl aryl polyoxyethylene ether polyoxypropylene ether, 3% calcium dodecylbenzene sulfonate, 10% DMF, methyl oleate to make up the balance;

[0053] Preparation method: According to the formula ratio, the measured active ingredients, solvents and co-solvents are added to the mixing tank and stirred to dissolve them. Then, the emulsifier is added, and the remaining solvent is used to make up the balance. The mixture is stirred evenly in the mixing tank and filtered to obtain the emulsifiable oil required by the present invention.

[0054] Preparation Example 9: 18% sulfiflumin·thiamethoxam aqueous emulsion (5:1)

[0055] Formula composition: 15% sulfiflumin, 3% thiamethoxam, 6% fatty alcohol polyoxyethylene ether 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;

[0056] Preparation method: Add the active ingredient, solvent, emulsifier, and cosolvent together according to the formula ratio to dissolve into a uniform oil phase; mix some water, antifreeze, and other pesticide adjuvants together to form a uniform aqueous phase; while stirring at high speed in the reaction vessel, add the oil phase to the aqueous phase and shear for about half an hour to form an oil-in-water emulsion.

[0057] Preparation Example 10: 13% sulfiflumin·thiamethoxam microemulsion (12:1)

[0058] Formula composition: 12% sulfiflumin, 1% thiamethoxam, 2% alkylphenol polyoxyethylene ether, 15% tristyrene-phenylphenol 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;

[0059] Preparation method: According to the formula composition, stir and mix the active ingredients, organic solvents, surfactants, co-surfactants and other additives to form an oil phase, then add the aqueous phase, and stir and shear slightly to form a microemulsion.

[0060] Preparation Example 11: 20% sulfiflumin·thiamethoxam suspension (3:1)

[0061] Formula composition: 15% sulfiflumin, 5% thiamethoxam, 2% block polyether, 5% styrene-phenol polyoxyethylene ether phosphate, 1% sodium lignosulfonate, 1% isotridecyl alcohol polyoxyethylene ether, 0.2% xanthan gum, 5% ethylene glycol, 0.3% sodium benzoate, 1% silicone defoamer, deionized water to make up the balance;

[0062] Preparation method: Same as in preparation example 1.

[0063] Preparation Example 12: 22% sulfiflumin·propyritin emulsifiable concentrate (7:15)

[0064] 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;

[0065] Preparation method: Same as in preparation example 8.

[0066] Preparation Example 13: 21% sulfiflumin·propyritin wettable powder (1:20)

[0067] Formula composition: 1% sulfiflumin, 20% propargite, 5% sodium lignosulfonate, 4% dispersant NNO, 2% sodium succinate sulfonate, 30% silica, kaolin to make up the balance;

[0068] Preparation method: According to the formula composition, mix propargite and fumed silica evenly, then mix the active ingredients, dispersant, wetting agent and filler, stir evenly in a mixing tank, and then pulverize and mix evenly multiple times by an air jet mill to prepare the wettable powder of the composition of the present invention.

[0069] Preparation Example 14: 13% sulfiflumin·propyritin water emulsion (1:12)

[0070] Formula composition: 1% sulfiflumin, 12% propargite, 15% acetophenone, 8% alkyl aryl polyoxyethylene ether polyoxypropylene ether, 2% styrene-phenol polyoxyethylene ether phosphate, 0.2% xanthan gum, 5% glycerol, 0.2% sodium benzoate, deionized water to make up the balance.

[0071] Preparation method: Same as in preparation example 9.

[0072] Preparation Example 15: 22% sulfiflumin·propyritin microemulsion (10:1)

[0073] Formula composition: 20% sulfiflumin, 2% propargite, 10% triphenylethylphenol polyoxyethylene ether, 5% cyclohexanone, 8% xylene, 1% sodium dodecylbenzenesulfonate, 4% ethylene glycol, 3% sorbitol polyoxyethylene ether, deionized water to make up the balance;

[0074] Preparation method: Same as in preparation example 10.

[0075] Example 1: Indoor biological experiment

[0076] Test basis: The test was conducted in accordance with NY / T 1154.12-2008 "Guidelines for Indoor Bioassay Tests of Pesticides - Insecticides - Part 12: Tetranychus Slide Immersion Method".

[0077] Experimental target: Citrus red spider mite.

[0078] Experimental preparation: Cut double-sided tape into 2cm lengths and attach them to one end of a glass slide. Select healthy mites and attach their backs to the double-sided tape (avoiding the legs, antennae, and mouthparts). Place 30 mites per slide and put them in a container lined with a damp sponge. Cover the container and incubate at 25±1℃. After 2 hours, examine under a microscope, remove any dead or injured individuals, and replenish the slide to 30 mites.

[0079] Reagent preparation: Dissolve the test reagent in a suitable solvent, and according to the purpose of mixing and the activity of the reagent, prepare 5 series of mass concentration gradients for each single agent and each group of mixed reagents.

[0080] Chemical treatment: Immerse the slide in the chemical solution and gently shake for 5 seconds. Remove the slide, absorb excess solution with filter paper, and place it in a white porcelain dish lined with a damp sponge. Cover with a transparent plastic film. Each treatment is repeated 4 times, and a blank control is set up with no chemical solution (containing all organic solvents and emulsifiers).

[0081] Feeding and observation: The containers containing the test insects were placed at a temperature of (25±1)℃ and a photoperiod of L:D=(16:8)h for feeding and observation.

[0082] Experimental investigation: Microscopic examination was performed 48 hours after treatment to check the mortality of the test insects, and the total number of insects and the number of dead insects were recorded.

[0083] Data processing was performed using DPS data processing software to calculate the virulence regression equation, correlation coefficient, and LC. 50 Values, and for each process, LC 50 The values ​​were compared for toxicity.

[0084] Calculate the mortality rate for each treatment based on the survey data. Use the following formula:

[0085]

[0086] In the formula:

[0087] P – Mortality rate, expressed as a percentage (%);

[0088] K represents the number of dead insects, in heads;

[0089] N represents the total number of insects treated, in units of heads.

[0090]

[0091] In the formula:

[0092] P1 – Corrected mortality rate, in percentage (%);

[0093] P t —The mortality rate is expressed as a percentage (%).

[0094] P0 – Mortality rate in the blank control group, expressed as a percentage (%).

[0095] If the control mortality rate is <5%, no correction is needed; if the control mortality rate is between 5% and 20%, correction should be made according to formula (2); if the control mortality rate is >20%, the experiment needs to be repeated.

[0096] The co-toxicity coefficient (CTC value) of the mixture is calculated according to formulas (3), (4), and (5):

[0097]

[0098] In the formula:

[0099] ATI – Actual Measured Toxicity Index of Mixtures;

[0100] S – LC50 of standard acaricides 50 The unit is milligrams per liter (mg / L);

[0101] M – LC of the mixture 50 The unit is milligrams per liter (mg / L).

[0102] TTI = TI A ×P A +TI B ×P B

[0103] In the formula:

[0104] TTI – Theoretical Toxicity Index of Mixtures;

[0105] TI A —A. Toxicity index of drug A;

[0106] P A —Percentage content of drug A in the mixture, expressed as percentage (%);

[0107] TI B —Toxicity index of drug B;

[0108] P B —Percentage content of agent B in the mixture, expressed as percentage (%).

[0109]

[0110] In the formula:

[0111] CTC – Cotoxicity Coefficient;

[0112] ATI – Actual Measured Toxicity Index of Mixtures;

[0113] TTI – Theoretical Toxicity Index of Mixtures.

[0114] The co-toxicity coefficient of the compound is ≥120, which shows a synergistic effect; CTC≤80 shows an antagonistic effect; and 80<CTC<120 shows an additive effect.

[0115] The results of the indoor toxicity tests are shown in the table below:

[0116] Table 1. Results of indoor bioactivity tests of sulfiflumin and tetradifon combination on citrus red spider mite.

[0117]

[0118]

[0119] The results of the indoor bioactivity test (Table 1) show that the combination of sulfiflumin and tetradifon has excellent control effect on citrus red spider mites under certain mass ratios. When the mass ratio of sulfiflumin to tetradifon is 1:26 to 48:1, the co-toxicity coefficient against citrus red spider mites is greater than 120, indicating a synergistic effect. Among them, when the mass ratio is 1:3, the LC50 against citrus red spider mites is... 50 The concentration was 3.4246 mg / L, with the highest co-toxicity coefficient of 186.911, indicating a significant synergistic effect. However, when the mass ratio of the two was 1:52 and 56:1, the co-toxicity coefficient was less than 120, showing an additive effect.

[0120] Table 2. Indoor bioactivity test of sulfiflumin and flufenoxuron combination against citrus red spider mite.

[0121]

[0122] The results of the indoor bioactivity test (Table 2) show that the combination of sulfiflumin and flufenoxuron has a good control effect on citrus red spider mites at certain mass ratios. The mass ratio of sulfiflumin to flufenoxuron in the combination of 1:25 to 40:1 shows a synergistic effect on citrus red spider mites. Specifically, a mass ratio of 1:8 shows a high LC50 against citrus red spider mites. 50 The concentration was 2.9623 mg / L, with a maximum co-toxicity coefficient of 197.792, indicating a significant synergistic effect. However, when the mass ratio of the two was 1:50 to 1:32 or 50:1, the co-toxicity coefficient was less than 120, showing an additive effect.

[0123] Table 3. Indoor bioactivity test of sulfiflumin and thiamethoxam combination on citrus red spider mite.

[0124]

[0125]

[0126] The results of the indoor bioactivity test (Table 3) show that the combination of sulfiflumin and thiamethoxam has a good control effect on citrus red spider mites at certain mass ratios. The mass ratio of sulfiflumin to thiamethoxam in the combination of sulfiflumin and thiamethoxam is 1:45–35:1, exhibiting a synergistic effect against citrus red spider mites. Specifically, a mass ratio of 1:5 shows a high LC50 against citrus red spider mites. 50 The concentration was 4.4257 mg / L, with a maximum co-toxicity coefficient of 188.375, indicating a significant synergistic effect. However, when the mass ratio of the two was 45:1, the co-toxicity coefficient was less than 120, showing an additive effect.

[0127] Table 4. Indoor bioactivity test of sulfiflumin and propargite combination against citrus red spider mite.

[0128]

[0129] The results of the indoor bioactivity test (Table 4) show that the combination of sulfiflumin and propargite has a good control effect on citrus red spider mites at certain mass ratios. The mass ratio of sulfiflumin to propargite in the combination of 1:40 to 20:1 shows a synergistic effect on citrus red spider mites. Specifically, a mass ratio of 1:15 shows a high LC50 against citrus red spider mites. 50 The concentration was 14.9513 mg / L, with a maximum co-toxicity coefficient of 213.314, indicating a significant synergistic effect. However, when the mass ratio of the two was 30:1 to 40:1, the co-toxicity coefficient was less than 120, showing an additive effect.

[0130] Example 2: Field efficacy trial

[0131] Experimental site: The experimental site is located in the Lijiazhai Citrus Orchard, Yongfu Town, Yongfu County, Guangxi. The soil texture is acidic sandy soil with medium to high fertility. The terrain is flat and irrigation and drainage are convenient.

[0132] Experimental crop: Citrus (Nanfeng mandarin orange), 5 years old, growing well.

[0133] Experimental Design: Following the guidelines for pesticide field efficacy trials, 10 treatments were set up, including 9 pesticide treatments and a blank control. Each treatment was replicated 4 times, resulting in 40 plots. The plots were arranged in a randomized block design, with 2 citrus trees per plot. During the peak infestation period of citrus red spider mites, the tree canopy was sprayed using a WS-16 backpack manual sprayer with a single hollow cone nozzle and an operating pressure of 0.2–0.4 MPa. Spraying was performed according to the designed dosage ratio to ensure full coverage of both sides of the leaves.

[0134] Investigation methods: Investigate the initial insect population before application of pesticides, and conduct investigations 3, 15, and 30 days after application. Two trees are investigated in each plot. For each tree, five leaves are collected from five directions: east, south, west, north, and center. Five leaves are collected from each direction to check the number of live mites on both sides of the leaves and calculate the control effect.

[0135] Methods for calculating drug efficacy:

[0136]

[0137] Results and analysis of field efficacy trials:

[0138] Table 5 Results of field efficacy trials

[0139]

[0140] Impact on crop safety: Observations showed that all tested pesticides were safe for citrus, and no phytotoxicity was observed after application. Citrus growth was normal.

[0141] Impact on other pests and diseases: No other pests or diseases were observed during the experiment, and no significant adverse effects of the tested pesticides on natural enemies or other organisms were observed.

[0142] As shown in Table 5, 3 days after application, the control efficacy of the nine acaricides against citrus red spider mites ranged from 55.11% to 91.30%. Among them, the control efficacies of 20% sulfiflumin·tetramethrin wettable powder (1:1), 18% sulfiflumin·flufenoxam suspension (5:1), 12% sulfiflumin·thiamethoxam emulsifiable concentrate (1:1), and 13% sulfiflumin·propyritin emulsifiable concentrate (1:12) were 88.17%, 91.30%, 86.66%, and 85.17%, respectively, which were significantly higher than those of 20% tetramethrin suspension, 36% flufenoxam suspension, 5% thiamethoxam emulsifiable concentrate, 30% propyritin wettable powder, and 20% sulfiflumin suspension. Fifteen days after application, the control efficacy of all nine acaricides increased compared to three days after application. The control efficacy of 20% sulfiflumin·tetramethrin wettable powder (1:1), 18% sulfiflumin·flufenoxam suspension (5:1), 12% sulfiflumin·thiamethoxam emulsifiable concentrate (1:1), and 13% sulfiflumin·propyntide emulsifiable concentrate (1:12) all exceeded 92%. Fifteen days after application, the control efficacy of 20% sulfiflumin·tetramethrin wettable powder (1:1), 18% sulfiflumin·flufenoxam suspension (5:1), and 12% sulfiflumin·thiamethoxam emulsifiable concentrate (1:1) all exceeded 92%.

[0143] In summary, all the acaricide compositions exhibited good rapid and sustained effects, and good safety profiles, making them suitable for use in production for the control of red spider mites on citrus trees.

[0144] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such 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 sulfiflumin-containing acaricide composition, characterized in that, The active ingredients of the acaricide composition include active ingredient A and active ingredient B, wherein active ingredient A is sulfiflumin and active ingredient B is thiamethoxam, and the mass ratio of active ingredient A to active ingredient B is 1:45 to 35:

1.

2. The acaricide composition according to claim 1, characterized in that, The mass ratio of active ingredient A to active ingredient B is 1:35 to 25:

1.

3. The acaricide composition according to claim 1, characterized in that, The mass ratio of active ingredient A to active ingredient B is 1:45, 1:35, 1:25, 1:15, 1:5, 1:1, 5:1, 15:1, 25:1, or 35:

1.

4. The acaricide composition according to claim 1, characterized in that, In addition to the active ingredients, the acaricide composition also contains auxiliary ingredients, which are one or more of the following: wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoamers, solvents, preservatives, stabilizers, synergists, binders, fillers, or carriers.

5. The acaricide composition according to claim 1, characterized in that, The acaricide composition is prepared into a pesticide-permitted formulation, wherein the formulation is a suspension concentrate, wettable powder, water-dispersible granule, water-in-oil emulsion, emulsifiable concentrate, or microemulsion.

6. The acaricide composition according to claim 5, characterized in that, The formulation is a suspension, wettable powder, or water-dispersible granule.

7. The use of the acaricidal composition according to any one of claims 1-6 for the control of harmful mites, characterized in that, The pest mentioned is the citrus red spider mite.

8. The use according to claim 7, characterized in that, The acaricide composition is applied to the mites and the media in which they occur.

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