Pesticide composition for controlling Spodoptera frugiperda

Abstract

Disclosed is a pesticide composition for controlling Spodoptera frugiperda. The pesticide includes an auxiliary material, an active ingredient A and an active ingredient B. The active ingredient A is tea saponin, the active ingredient B is chlorantraniliprole or tolfenpyrad, and the mass ratio of the active ingredient A to the active ingredient B is 1-20:20-1. In the present invention, by mixing tea saponin with chlorantraniliprole or tolfenpyrad, a pesticide with certain ratio is prepared to control Spodoptera frugiperda, has the advantages of good effect and low dosage, and can delay the resistance of Spodoptera frugiperda to pesticides.

Claims

1. A pesticide composition for controlling Spodoptera frugiperda, comprising an auxiliary material, and further comprising an active ingredient A and an active ingredient B; wherein the active ingredient A is tea saponin, and the active ingredient B is chlorantraniliprole; wherein the pesticide composition is a suspension emulsion and includes a dispersant; the dispersant is alkylphenol ethoxylates, and wherein a mass ratio of the active ingredient A to the active ingredient B is 1-20:20-1.

2. The pesticide composition for controlling Spodoptera frugiperda of claim 1, wherein a weight sum of the active ingredient A and the active ingredient B is 1-90% of a total weight of the pesticide composition, and the rest are the auxiliary material.

3. The pesticide composition for controlling Spodoptera frugiperda of claim 1, wherein the mass ratio of the active ingredient A to the active ingredient B is 1-10:5-1.

4. The pesticide composition for controlling Spodoptera frugiperda of claim 1, wherein the pesticide composition includes the following raw materials in weight percentage: 1-40% of the active ingredient A, 1-40% of the active ingredient B, 1-4% of wetting agent, 0.5-4% of antifreezing agent, 0.1-3% of thickening agent, 3-6% of the dispersant, 0.1-1% of defoaming agent, and 2-93.3% of water.

5. The pesticide composition for controlling Spodoptera frugiperda of claim 4, wherein the wetting agent is magnesium aluminum silicate.

6. The pesticide composition for controlling Spodoptera frugiperda of claim 4, wherein the defoaming agent is polyoxyethylene glyceryl ether.

Description

DETAILED DESCRIPTION

(1) The technical solution in embodiments of the present invention will be clearly and fully described below. Apparently, the described embodiments are merely part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those ordinary skilled in the art without contributing creative labor will belong to the protection scope of the present invention.

Embodiment 1

(2) A pesticide composition for controlling Spodoptera frugiperda: 27% chlorantraniliprole⋅tea saponin emulsifiable concentrate:

(3) including the following raw materials in weight percentage: 10% of tea saponin, 17% of chlorantraniliprole, 15.3% of ethanol, 12% of dimethylformamide, 5% of pesticide emulsifier 601, 2% of castor oil polyethylene glycol condensate, and solvent naphtha filled to 100%. The raw materials are uniformly stirred, and thus the 27% chlorantraniliprole⋅tea saponin emulsifiable concentrate is prepared.

Embodiment 2

(4) A pesticide composition for controlling Spodoptera frugiperda: 50% chlorantraniliprole⋅tea saponin wettable powder:

(5) including the following raw materials in weight percentage: 20% of tea saponin, 30% of chlorantraniliprole, 11% of fatty amide N-Methyltaurine sodium salt, 7% of saponin powder, 7% of palygorskite, and light calcium carbonate filled to 100%. The raw materials are mixed and then milled by a jet mill, and thus the 50% chlorantraniliprole⋅tea saponin wettable powder is prepared.

Embodiment 3

(6) A pesticide composition for controlling Spodoptera frugiperda: 12.5% chlorantraniliprole⋅tea saponin water dispersible granule:

(7) including the following raw materials in weight percentage: 6.25% of tea saponin, 6.25% of chlorantraniliprole, 3.6% of fatty amide N-Methyltaurine sodium salt, 4.2% of sodium methyl fatty amide benzene sulfonate, 2% of polyoxyethylene tristyrene phenyl phosphate, 2% of urea, and palygorskite filled to 100%. The raw materials are mixed and granulated, and thus the 12.5% chlorantraniliprole⋅tea saponin water dispersible granule is prepared.

Embodiment 4

(8) A pesticide composition for controlling Spodoptera frugiperda: 22% chlorantraniliprole⋅tea saponin suspension emulsion:

(9) including the following raw materials in weight percentage: 11% of tea saponin, 11% of chlorantraniliprole, 3% of alkylphenol ethoxylates, 2.1% of sodium lignin sulfonate, 1.5% of magnesium aluminum silicate, 0.15% of xanthan gum, 4% of glycol, 2% of polyoxyethylene glyceryl ether, and water filled to 100%. The raw materials are uniformly mixed, are placed in a sand mill and are milled to a particle size of 5 μm, and thus the 22% chlorantraniliprole⋅tea saponin suspension emulsion is prepared.

Embodiment 5

(10) A pesticide composition for controlling Spodoptera frugiperda: 30% chlorantraniliprole⋅tea saponin emulsion in water:

(11) including the following raw materials in weight percentage: 5% of tea saponin, 25% of chlorantraniliprole, 4% of A-110, 5% of dimethylformamide, 6% of ethyl acetate, 3% of magnesium aluminum silicate, 0.5% of polyoxyethylene glyceryl ether, and water filled to 100%. The raw materials are dissolved with a solvent, the solution is slowly added to an aqueous phase at constant revolving speed, and thus the 30% chlorantraniliprole⋅tea saponin emulsion in water is prepared.

Embodiment 6

(12) A pesticide composition for controlling Spodoptera frugiperda: 12% chlorantraniliprole⋅tea saponin capsule suspension:

(13) including the following raw materials in weight percentage: 4% of tea saponin, 8% of chlorantraniliprole, 3% of dimethylformamide, 0.8% of methylene diphenyl diisocyanate, 2% of polyvinyl alcohol, 1% of fatty acid amide N-Methyltaurine sodium salt, 1.3% of hexamethylene diamine, 0.1% of xanthan gum, and water filled to 100%. The 12% chlorantraniliprole⋅tea saponin capsule suspension is prepared.

Embodiment 7

(14) A pesticide composition for controlling Spodoptera frugiperda: 15% tolfenpyrad⋅tea saponin granule:

(15) including the following raw materials in weight percentage: 5% of tolfenpyrad, 10% of tea saponin, 4% of fatty acid amide N-Methyltaurine sodium salt, 3% of sodium methyl fatty amide benzene sulfonate, 5% of polyoxyethylene tristyrene phenyl phosphate, 2% of urea, and palygorskite filled to 100%. The raw materials are mixed, extruded and granulated, and thus the 15% tolfenpyrad⋅tea saponin granule is prepared.

Embodiment 8

(16) A pesticide composition for controlling Spodoptera frugiperda: 30% tolfenpyrad tea saponin suspension emulsion:

(17) including the following raw materials in weight percentage: 15% of tolfenpyrad, 15% of tea saponin, 3% of NNO, 1.2% of sodium lignin sulfonate, 2% of 600, 2% of JFC-E, 0.2% of xanthan gum, and water filled to 100%. The raw materials are placed in a sand mill and milled to below 5 μm, and thus the 30% tolfenpyrad⋅tea saponin suspension emulsion is prepared according to the above-mentioned method.

Embodiment 9

(18) A pesticide composition for controlling Spodoptera frugiperda: 15% tolfenpyrad⋅tea saponin emulsion in water:

(19) including the following raw materials in weight percentage: 7.5% of tea saponin, 7.5% of tolfenpyrad, 4% of JFC-E, 7.2% of ethyl acetate, 3% of magnesium aluminum silicate, 2% of urea, 0.5% of polyoxyethylene glyceryl ether, and water filled to 100%. The raw materials are dissolved with a solvent, the solution is slowly added to an aqueous phase at constant revolving speed, and thus the 15% tolfenpyrad⋅tea saponin emulsion in water is prepared.

Examples of Application

(20) 1. Indoor Toxicity Test

(21) Pesticide for test: TC of tea saponin; TC of chlorantraniliprole; TC of tolfenpyrad;

(22) Pest for test: Spodoptera frugiperda (2-3-day-old);

(23) Test method: immersion method: calculating the dosage of the TC according to the active ingredients, preparing the TC into a mother solution, adding clear water to dilute the mother solution to 5-7 gradient concentrations, taking clear water treatment as a control, and setting 3 repetitions for each treatment; selecting 20 larvae with basically the same growth state, putting the larvae into an experiment barrel containing pesticide liquid, covering a gauze (to prevent escape), placing in a 25° C. incubator, investing the death situations after 24 h, recording the number of the dead larvae, and processing data by DPS statistical software. The test results are shown in Table 1 and Table 2.

(24) TABLE-US-00001 TABLE 1 Test results of toxicity of chlorantraniliprole and tea saponin which are mixed in different ratios to Spodoptera frugiperda (3-day-old) LC.sub.50 (95% confidencelimit) Co-toxicity Pesticide (mg/L) coefficient (CTC) Chlorantraniliprole (A) 0.283 (0.124-0.581) — Tea saponin (B) 2.623 (1.176-4.633) — A:B 20:1 0.241 (0.144-0.564) 122.64 A:B 10:1 0.271 (0.101-0.644) 113.64 A:B 5:1 0.263 (0.078-0.745) 126.40 A:B 1:1 0.401 (0.136-0.966) 127.40 A:B 1:5 0.874 (0.374-1.214) 126.20 A:B 1:10 1.241 (0.742-3.214) 120.66 A:B 1:20 2.313 (1.124-5.330) 81.37

(25) TABLE-US-00002 TABLE 2 Test results of toxicity of tolfenpyrad and tea saponin which are mixed in different ratios to Spodoptera frugiperda (3-day-old) LC.sub.50 (95% confidencelimit) Co-toxicity Pesticide (mg/L) coefficient (CTC) Tolfenpyrad (A) 0.563 (0.241-0.833) — Tea saponin (B) 2.623 (1.176-4.633) — A:B 20:1 0.571 (0.204-0.996) 102.43 A:B 10:1 0.582 (0.117-0.856) 104.17 A:B 5:1 0.532 (0.149-0.852) 121.77 A:B 1:1 0.674 (0.341-1.241) 137.54 A:B 1:5 1.203 (0.741-3.525) 135.44 A:B 1:10 1.622 (1.201-4.322) 121.35 A:B 1:20 1.944 (1.244-5.641) 114.91

(26) As shown in Table 1 and Table 2, tea saponin and chlorantraniliprole or tolfenpyrad show a good indoor toxicity effect on Spodoptera frugiperda. The co-toxicity coefficients of the compounds of chlorantraniliprole and tea saponin within the range of 20:1, 5-1:1:−10 to Spodoptera frugiperda are all greater than 120, showing a good synergistic effect, the optimal ratio being 1:1; and the co-toxicity coefficients of the compounds of tolfenpyrad and tea saponin within the range of 1-10:10-1 are all greater than 120, showing a good synergistic effect, the optimal ratio being 1:5.

(27) 2. Field effect: spraying the pesticide composition prepared in embodiment 1-9 in the experimental base of Haikou Maize Research Institute, and spraying when pests first appear. The test results are shown in Table 3.

(28) TABLE-US-00003 TABLE 3 Field test results Spraying dosage/active 5 d control 10 d control Pesticide ingredient/g effect/% effect/% Embodiment 1 5.5 84.6 69.4 Embodiment 2 5.5 87.5 61.4 Embodiment 3 5.5 86.3 70.2 Embodiment 4 5.5 89.2 68.2 Embodiment 5 5.5 86.6 64.5 Embodiment 6 5.5 87.5 66.0 Embodiment 7 7.5 87.6 67.1 Embodiment 8 7.5 90.2 63.3 Embodiment 9 7.5 86.4 64.2 30% tolfenpyrad 5.5 74.9 20.7 SC 20% 5.5 80.2 42.2 chlorantraniliprole SC 65% tea saponin 20 71.6 31.1 powder

(29) As shown in Table 3, the control effects of embodiments 1-9 on Spodoptera frugiperda are significantly higher than that of the single pesticide of the control pesticide, and embodiments 1-9 have good quick acting effect and good long lasting effect. Therefore, the mixture of chlorantraniliprole or tolfenpyrad and tea saponin has a good application prospect in controlling Spodoptera frugiperda.

(30) In addition, the formula can also be prepared into ultra-low volume liquid for aircraft spray, as well as hot fogging concentrate, aerosols and other formulas that are easily conceived by those skilled in the art and used for controlling Spodoptera frugiperda.

(31) The above description of the disclosed embodiments enables those skilled in the art to realize or use the present invention. Many modifications to these embodiments will be apparent to those skilled in the art. The general principle defined herein can be realized in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principle and novel features disclosed herein.