A miticidal pesticide composition

Abstract

The present invention relates to a new acaricidal pesticide composition having excellent control activity against agricultural and horticultural pests. The present invention also relates to a method for controlling agricultural and horticultural pests and use of the new pesticide composition. An acaricidal pesticide composition containing an active ingredient (A) of a compound of formula (I) and an active ingredient (B) of at least one tetronic acid insecticide selected from the group consisting of spirodiclofen, spiromesifen, spirotetramat, spirodiclofen, the weight ratio of the active ingredients (A) and (B) being 10:1-1:100. Use of the acaricidal pesticide composition for controlling leaf mites. Spraying the acaricidal pesticide composition onto crops parasitized by leaf mites to repel leaf mites.

Description

Technical Field

[0001] This invention relates to a novel acaricide composition exhibiting excellent control activity against agricultural and horticultural pests. The invention also relates to methods for controlling agricultural and horticultural pests and the use of this novel pesticide composition. Background Technology

[0002] The acaricide composition of the present invention contains an active ingredient (A), which is an alkylphenyl sulfide derivative represented by the following formula [I]. It is described in patent document WO2013157229A1, and it is recorded that it has excellent effects on various pests, especially on spider mites such as two-spotted spider mite, Kanzawa spider mite, and citrus spider mite.

[0003]

[0004] The most typical problem in pest control is the need to reduce the dosage rate of active ingredients to minimize or avoid adverse environmental or toxicological effects while still providing effective pest control.

[0005] Another challenge in pest control is that repeated and unique use of a single insecticidal active ingredient often leads to the rapid selection of pests that develop natural or adaptive resistance to the active ingredient. Summary of the Invention

[0006] The purpose of this invention is to provide an acaricide composition that addresses the above-mentioned shortcomings and solves at least one problem such as improving biological properties, providing synergistic properties, reducing dosage rate, broadening the activity spectrum, combining knockdown activity and long-lasting effect, and managing resistance to delay resistance.

[0007] The inventors conducted research to solve these problems and found that by using a pesticide composition containing a compound of formula (I) as active ingredient (A) and a quaternary keto acid compound containing active ingredient (B), a synergistic control effect can be provided, thus completing the present invention.

[0008] This invention provides an acaricide composition comprising:

[0009] (A) Compound of formula (I),

[0010] (B) At least one quaternary keto acid insecticide selected from Spirodiclofen, Spiromesifen, Spirotetramat, and Spirobudiclofen.

[0011] The acaricide composition of the present invention contains a compound of formula (I) and spirodiclofen.

[0012] The acaricide composition of the present invention contains a compound of formula (I) and spiromesifen.

[0013] The acaricide composition of the present invention contains a compound of formula (I) and spirotetramat.

[0014] The acaricide composition of the present invention contains a compound of formula (I) and spirobudiclofen.

[0015] When active ingredient (A) and active ingredient (B) are present in the acaricide composition of the present invention in a specific weight ratio, the synergistic effect is particularly significant. The weight ratio of active ingredient (A) to active ingredient (B) is 10:1-1:100, more preferably 5:1-1:50, more preferably 1:1-1:40, more preferably 1:1-1:20, more preferably 1:1-1:15, and more preferably 1:1-1:10.

[0016] The acaricide composition is used for the control of spider mites.

[0017] The acaricide composition described herein is used to control citrus pterocaryon (Panonychus citri), apple pterocaryon (Panonychus ulmi), two-spotted spider mite (Tetranychus urticae), hawthorn spider mite (Tetranychus viennensis), cinnabarinus spider mite (Tetranychus cinnabarinus), and kanzawai spider mite (Tetranychus kanzawai).

[0018] The acaricide composition is used to control spider mites on fruit trees, tea trees, and vegetables.

[0019] A method for repelling spider mites involves spraying the acaricide composition onto crops infested by spider mites to repel them.

[0020] By being used within the aforementioned scope, the pesticide composition of the present invention fully exerts the pharmacological activity of its active ingredients, delivering enhanced acaricidal effects by spraying it onto target crops without causing phytotoxicity; in particular, it exhibits enhanced acaricidal activity against mites that have reduced sensitivity to existing acaricides. Effective mite control is achieved using the acaricidal pesticide composition of the present invention, reducing the environmental burden by decreasing the amount of pesticide sprayed.

[0021] The acaricide composition of the present invention shows excellent efficacy against various harmful organisms, especially spider mites. Examples include the citrus spider mite (Panonychus citri), the apple spider mite (Panonychus ulmi), the two-spotted spider mite (Tetranychus urticae), the hawthorn spider mite (Tetranychus viennensis), the cinnabar spider mite (Tetranychus cinnabarinus), the kanzawai spider mite (Tetranychus kanzawai), the geniculatus geniculate spider mite (Eotetranychus geniculatus), the plum spider mite (Eotetranychus pruni), the Asian spider mite (Eotetranychus sexmanaculatus), the smithi spider mite (Eotetranychus smithi), the uncatus spider mite (Eotetranychus uncatus), the boreus spider mite (Eotetranychus boreus), the hondoensis spider mite (Oligonychus hondoensis), the ilicis spider mite (Oligonychus ilicis), and the larch spider mite (Oligonychus ilicis). The species include *Karamatatus*, *Panonychus mori*, *Tenuipalpus zhizhilashviliae*, *Tuckerella pavoniformis*, *Brevipalpus lewisi*, *Brevipalpus obovatus*, *Brevipalpus phoenicis*, *Bryobiapraetiosa*, *Bryobia rubrioculus*, and *Dolichotetranychusfloridanus*.

[0022] The acaricide composition of this invention is particularly suitable for controlling harmful mites such as the citrus spider mite (Panonychus citri), the apple spider mite (Panonychus ulmi), the two-spotted spider mite (Tetranychus urticae), the hawthorn spider mite (Tetranychus viennensis), the cinnabarinus spider mite (Tetranychus cinnabarinus), and the Kanzawai spider mite (Tetranychus kanzawai).

[0023] The acaricide composition of the present invention can be used to control thorny mites on important crops such as fruit trees (e.g., citrus, apples and pears), tea trees, and vegetables (Chinese cabbage, potatoes, green beans, cucumbers, eggplants, etc.).

[0024] In the acaricide composition of the present invention, the quaternary ketoacid insecticides of formula (I) used as active ingredient (A) and (B) used as active ingredient (B) can be used directly, or they can be formulated into wettable powders, emulsifiable concentrates, water-in-oil emulsions, water-dispersible granules, aqueous suspensions, oil suspensions, dry suspensions, microcapsules, fumigants, aerosols, suspension emulsions, tablets, etc., by existing methods. The total content of active ingredients in the composition of the present invention can account for about 1%-90% of the composition, preferably about 5%-70%.

[0025] The carrier suitable for use in the compositions of the present invention can be any solid or liquid carrier commonly used in agricultural and horticultural compositions. Various surfactants, stabilizers, and other adjuvants may be used as needed. In commercial formulations, the compositions of the present invention can also be mixtures with other active ingredients (e.g., various insecticides, acaricides, fungicides and herbicides, plant growth regulators, repellents, attractants, synergists, fertilizers, and fragrances) to expand their applicability.

[0026] The acaricide composition of the present invention may incorporate the following surfactants. Examples include: polyethylene oxide-propylene oxide copolymers, polyethylene oxide alkyl aryl ethers, polyethylene oxide styrene phenyl ethers, polyethylene oxide phenyl ether polymers, polyethylene oxide alkylene aryl phenyl ethers, polyethylene oxide-propylene oxide block polymers, polyethylene oxide styrene phenyl ether sulfates, lignin sulfonates, alkyl aryl sulfonates, alkyl naphthalene sulfonates, etc. The surfactant is preferably used in a range typically from about 0% to about 20% of the total amount relative to the pesticide composition of the present invention.

[0027] The present invention also provides a method for repelling pests, wherein the acaricide composition of the present invention is sprayed onto crops infested by pests to repel the pests.

[0028] The present invention also provides a method for repelling spider mites, wherein the acaricide composition of the present invention is sprayed onto crops infested with spider mites to repel the pest. In particular, the pest is a pest with reduced susceptibility.

[0029] A method for repelling spider mites involves spraying the acaricide composition described in this invention onto crops infested by spider mites. Specifically, the spider mites are reduced-sensitivity varieties.

[0030] For the acaricide pesticide composition formulation of the present invention, the formulation is diluted with water and applied by spraying in the form of a pesticide composition spray solution. During spraying, the amount of water to be sprayed is first determined based on the crop type, climate, soil, crop growth stage, target pests, and the occurrence status of target mites. The pesticide composition formulation of the present invention can be added to the determined amount of dilution water to prepare a spray solution of appropriate concentration. Typically, the formulation is diluted with water to approximately 300 to approximately 2000 times to form a spray solution. This spray solution is typically applied at a concentration of 3 to 1000 L / 1000m³. 2 The spray volume is determined by spraying. The spraying liquid can be sprayed directly using a conventional sprayer. Specific spraying methods include: powered sprayer spraying, boom sprayer spraying, high-speed sprayer spraying, and unmanned helicopter spraying, etc.

[0031] This invention provides an acaricide composition that improves biological characteristics, has synergistic effects, reduces dosage rate, broadens the activity spectrum, combines knockdown activity and long-lasting effect, and manages resistance to delay resistance. Detailed Implementation

[0032] The present invention will be further described below with reference to embodiments:

[0033] Experimental example:

[0034] Two-spotted spider mite control efficacy test

[0035] The active ingredients (A) and (B) were dissolved in solvents to prepare stock solutions for single-agent preparations, and then diluted with an aqueous solution containing 0.1% Tween-80 to the required concentration.

[0036] The tested spider mites were healthy, active female adults of uniform size. The tested leaves were healthy, intact, and uniformly sized leaves from kidney bean seedlings, and no pesticides were used during cultivation.

[0037] Using a hole punch, cut kidney bean leaves into leaf discs with a diameter of 2 cm. Immerse the leaves in the treatment solution for 10 seconds, then allow them to air dry naturally before laying them flat on an absorbent sponge. Wrap the leaf discs with thin strips of non-woven fabric, filling the fabric with water to provide moisture and prevent spider mites from escaping. Inoculate with adult two-spotted spider mites. Inoculate 30 female adult mites onto each leaf disc. After inoculation, place the leaf discs at a temperature of (25±1)°C. o Culturing was performed in a culture room with relative humidity of (70±10)% and a light ratio of L:D of 16:8. Each treatment was repeated 4 times. After 24 hours, the legs and mouthparts of the two-spotted spider mite were touched with the tip of a small paintbrush; those without a reaction were considered dead. The reduction rate of live mites and the control effect for each treatment were calculated. The blank control was treated with purified water.

[0038] The spider mite reduction rate and control effect of each treatment were calculated using the following formula:

[0039] Mite reduction rate (%) = (Number of live mites before application - Number of live mites after application) / Number of live mites before application * 100

[0040] Control efficacy (%) = (Reduction rate of live mites in the treated area - Reduction rate of live mites in the control area) / (100 - Reduction rate of live mites in the control area) * 100

[0041] Furthermore, the theoretical control effect (%) can be calculated using the Colby formula. When the actual control effect (%) is higher than the theoretical control effect (%), the composition of the present invention has a synergistic effect.

[0042] Table 1

[0043]

[0044] Table 2

[0045]

[0046] Table 3

[0047]

[0048] Table 4

[0049]

[0050] Formulation Example 1: Wettable Powder

[0051] 10 parts of compound (I)

[0052] 20 parts of spirodiclofen

[0053] 5 parts of sodium salt of naphthalenesulfonic acid formaldehyde condensate

[0054] 1 part of polyoxyethylene alkyl aryl ether

[0055] 20 parts of diatomaceous earth

[0056] 44 parts clay

[0057] Mix the above substances evenly, pulverize them, and prepare a wettable powder.

[0058] Formulation Example 2: Water-dispersible granules

[0059] 5 parts of compound (I)

[0060] 50 parts of spirodiclofen

[0061] 10 parts of modified sodium lignosulfonate

[0062] 1 part talcum powder

[0063] 34 parts clay

[0064] Mix and crush the above substances evenly, add an appropriate amount of water, knead, granulate by extrusion, and then dry to make water-dispersible granules.

[0065] Formulation Example 3: Suspension Formulation

[0066] 20 parts of compound (I)

[0067] 5 parts of spirotetramat

[0068] 4 parts of sodium formaldehyde condensate alkylnaphthalene sulfonate

[0069] 1 part xanthan gum

[0070] 0.3 parts bentonite

[0071] 5 parts propylene glycol

[0072] 0.2 parts of polysiloxane defoamer

[0073] 64.5 parts water

[0074] The above substances are pre-dispersed to obtain a suspension slurry, then wet-milled to obtain a suspension, and finally the suspension is modified to obtain a suspension product.

[0075] Formulation Example 4: Emulsifiable Concentrate

[0076] 10 parts of compound (I)

[0077] 10 parts of spirodiclofen

[0078] 10 parts of N-methylpyrrolidone

[0079] 3 parts of polyoxyethylene alkyl aryl ether

[0080] 2 parts calcium dodecylbenzenesulfonate

[0081] SOLVESSO TM 200 65 copies

[0082] Dissolve the above substances evenly to make an emulsion.

Claims

1. A pesticide composition for killing mites, characterized in that, The composition comprises active ingredient (A) of formula (I) compound ， It comprises a quaternary ketoacid insecticide selected from the following active ingredient (B): spirodiclofen, spirodiclofen, spirotetramat, or spirodiclofen diester, wherein the weight ratio of said active ingredient (A) to (B) is 1:1 to 1:

70.

2. The acaricide composition according to claim 1, characterized in that, The composition comprises an active ingredient (A) of formula (I) and spirodimethyl diester, wherein the weight ratio of the active ingredient (A) to the spirodimethyl diester is 1:1 to 1:

50.

3. The acaricide composition according to claim 1, characterized in that, The composition comprises an active ingredient (A) of formula (I) and spirodiclofen, wherein the weight ratio of the active ingredient (A) to spirodiclofen is 1:1 to 1:

20.

4. The acaricide composition according to claim 1, characterized in that, The composition consists of active ingredient (A) of formula (I) and spirodiclofen, wherein the weight ratio of active ingredient (A) to spirodiclofen is 1:1 to 1:

10.

5. The acaricide composition according to claim 1, characterized in that, The composition comprises an active ingredient (A) of formula (I) and spirotetramat, wherein the weight ratio of the active ingredient (A) to spirotetramat is 1:1 to 1:

35.

6. Use of the acaricide composition of claim 1 for the control of spider mites.

7. The use of the acaricide composition according to claim 1 for controlling citrus pterostigmon (Panonychus citri), apple pterostigmon (Panonychus ulmi), two-spotted spider mite (Tetranychus urticae), hawthorn spider mite (Tetranychus viennensis), cinnabarinus spider mite (Tetranychus cinnabarinus), and kanzawai spider mite (Tetranychus kanzawai).

8. The use of the acaricide composition according to claim 1 for controlling spider mites on fruit trees, tea trees, and vegetables.

9. A method for repelling spider mites, characterized in that, The acaricide composition of claim 1 is sprayed onto crops infested by spider mites to repel them.

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