Insecticidal composition, method for preparing the same, and use thereof

Abstract

The application discloses an insecticidal composition and a preparation method and application thereof, relates to the technical field of pesticides, and is not limited to the technical field of pesticides. The effective components of the insecticidal composition of the application include flutriarim and spirodiclofen, different types of components are compounded, and the insecticidal composition has obvious synergistic effects on cotton bollworms, turkestan leaf mites, two-spotted spider mites, truncated spider mites, corn borer moths and thrips through multiple different action modes, and is obviously superior to the effects of flutriarim single agent, spirodiclofen single agent and other preparations. While effectively reducing the dosages of flutriarim and spirodiclofen, the insecticidal composition can expand the target range of the two insecticides, reduce the number of pesticide application times and reduce production costs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pesticides, and relates to a pesticide composition, a preparation method thereof and application. BACKGROUND

[0002] According to the investigation, there are hundreds of pests that harm crops such as cotton, corn and eggplant, and the yield loss of the crops such as cotton, corn and eggplant caused by the pests is about 20% per year, and can be more than 50% in severe cases. For example, cotton bollworm, Turkey leaf mite, two-spotted spider mite, aculiferous spider mite, corn borer, thrips and aphid, etc. In the process of pest control, the long-term overuse of chemical pesticides causes the increase of pest resistance, the decrease of control effect, the serious agricultural non-point source pollution and the influence on ecological environment safety. The reasonable use of pesticide mixing is one of important ways to delay resistance and improve efficacy. Therefore, it is of important economic value significance to screen a new type of high-efficiency, low-toxicity, low-residue and environmentally friendly pesticide formula.

[0003] Fluoximide is an isoxazole pesticide developed by Nippon Shokubai Co., Ltd., and its action mechanism is novel, which is a gamma-aminobutyric acid (GABA) gate channel chloride ion allosteric modulator. IRAC classifies it into the 30th group. It has high insecticidal activity on Lepidoptera, Hemiptera, Thysanoptera, Coleoptera, Diptera and Acarina, and is high in safety to mammals, crops and ecological environment, and has little influence on pollinating insects.

[0004] Spirodiclofen is a quinone acid ester acaricide, and has no systemicity. It mainly prevents and controls eggs, nymphs and female adult mites through contact and stomach toxicity. Its action mechanism is to inhibit the synthesis of fat in the body of harmful mites and block energy metabolism, and it has no cross-resistance with other acaricides. It has outstanding egg-killing effect and good control effect on harmful mites at different development stages, and can be used for mite control of crops such as citrus, grape, eggplant and pepper.

[0005] At present, there is no report on a pesticide composition composed of fluoximide and spirodiclofen. SUMMARY

[0006] One of the purposes of the present application is to provide a pesticide composition. The above-mentioned pesticide composition can effectively control pests, reduce the number of pests, reduce the harm degree of pests to crops such as cotton, corn and eggplant, and improve the yield of cotton, corn and eggplant.

[0007] The second purpose of the present application is to provide a preparation method of the above-mentioned pesticide composition. The preparation method is simple and suitable for industrial production.

[0008] The third purpose of the present application is to provide a new, high-efficiency, low-toxicity and low-residue pesticide composition.

[0009] To achieve the above-mentioned purposes, the technical solutions of the present application are as follows:

[0010] The present application provides an insecticidal composition, which consists of fluoximide 0.1-70 parts by weight and spirodiclofen 0.1-70 parts by weight.

[0011] Preferably, the composition consists of fluoximide 0.5-60 parts by weight and spirodiclofen 0.5-60 parts by weight.

[0012] Preferably, the composition consists of fluoximide 1-60 parts by weight and spirodiclofen 1-30 parts by weight.

[0013] In a specific embodiment of the present application, the composition consists of fluoximide 11 parts by weight and spirodiclofen 7 parts by weight.

[0014] In another specific embodiment of the present application, the composition consists of fluoximide 23 parts by weight and spirodiclofen 14 parts by weight.

[0015] In another specific embodiment of the present application, the composition consists of fluoximide 40 parts by weight and spirodiclofen 25 parts by weight.

[0016] The present application also provides an insecticide comprising the insecticidal composition of the present application and a pesticide-acceptable adjuvant.

[0017] Preferably, the insecticide is in the form of a water-suspension, a water-dispersible granule or a dispersible oil-suspension. However, the form is not limited thereto.

[0018] Preferably, the water-suspension consists of fluoximide 0.1-70%, spirodiclofen 0.1-70%, a wetting agent 1-12%, a thickening agent 1-8%, a dispersing agent 1-14%, an anti-freezing agent 1-6%, and water to make up 100%.

[0019] The preparation method is as follows: first dilute spirodiclofen with water, then add fluoximide to prepare a mixture, and then add a dispersing agent, a wetting agent, an anti-freezing agent and other adjuvants, grind, mix with a thickening agent, and mix uniformly at high speed to obtain a water-suspension form.

[0020] More preferably, the water-suspension consists of fluoximide 1-60%, spirodiclofen 1-45%, a wetting agent 1-12%, a thickening agent 1-8%, a dispersing agent 1-14%, an anti-freezing agent 1-6%, and water to make up 100%.

[0021] The preparation method is as follows: first dilute spirodiclofen with water, then add fluoximide to prepare a mixture, and then add a dispersing agent, a wetting agent, an anti-freezing agent and other adjuvants, grind, mix with a thickening agent, and mix uniformly at high speed to obtain a water-suspension form.

[0022] As preferred, the components and weight percentage of the water dispersible granule are as follows: fluoximide 0.1-70%, spirodiclofen 0.1-70%, disintegrant 1-8%, dispersant 1-11%, wetting agent 1-18%, and filler to 100%.

[0023] Preparation method: first dilute spirodiclofen with water, then add fluoximide to prepare a mixture, and then add the auxiliary agent, crush with an air flow crusher, and granulate to obtain the water dispersible granule.

[0024] More preferably, the components and weight percentage of the water dispersible granule are as follows: fluoximide 1-60%, spirodiclofen 1-45%, disintegrant 1-8%, dispersant 1-11%, wetting agent 1-18%, and filler to 100%.

[0025] Preparation method: first dilute spirodiclofen with water, then add fluoximide to prepare a mixture, and then add the auxiliary agent, crush with an air flow crusher, and granulate to obtain the water dispersible granule.

[0026] As preferred, the components and weight percentage of the dispersible oil suspension type are as follows: fluoximide 0.1-70%, spirodiclofen 0.1-70%, thickening agent 1-7%, stabilizer 1-17%, dispersant 1-14%, emulsifier 1-6%, defoaming agent 0-6%, antifreeze agent 1-5%, and vegetable oil to 100%.

[0027] Preparation method: mix fluoximide, spirodiclofen, stabilizer, dispersant, emulsifier, thickening agent, defoaming agent, antifreeze agent, and vegetable oil, and then disperse with high-speed shearing, and then sand mill.

[0028] More preferably, the components and weight percentage of the dispersible oil suspension type are as follows: fluoximide 1-70%, spirodiclofen 1-70%, thickening agent 1-7%, stabilizer 1-18%, dispersant 1-16%, emulsifier 1-8%, defoaming agent 0-8%, antifreeze agent 1-6%, and vegetable oil to 100%.

[0029] Preparation method: mix fluoximide, spirodiclofen, stabilizer, dispersant, emulsifier, thickening agent, defoaming agent, antifreeze agent, and vegetable oil, and then disperse with high-speed shearing, and then sand mill.

[0030] The above wetting agent is one or more of Terspense 4896, triethanolamine lauryl sulfate, monoethanolamine lauryl sulfate, sodium dodecyl sulfate, Morwet EFW, sodium dodecylbenzenesulfonate, butylnaphthalene sulfonic acid, fatty alcohol polyoxyethylene ether, polyethylene glycol 200, NP-10, Disperso BB4, Multiwe 8269, and the like.

[0031] The dispersing agent is one or more of Morwet D-425, sodium lignosulfonate, Atlo 4913, Terspense 2500, Atlas G-5002L, Atlas G-5000, dispersing agent NNO, naphthalene sulfonate, Dispersol PSR 19 polycarboxylate dispersant.

[0032] The disintegrating agent is one or more of wgwin D800, inorganic salt (sodium sulfate, etc.), sodium carboxymethyl cellulose, bentonite, etc.

[0033] The filler is one or more of kaolin, talc, diatomite, bentonite, and pottery clay.

[0034] The antifreezing agent is one or more of ethylene glycol, glycerol, propylene glycol, and glycerin.

[0035] The thickening agent is one or more of xanthan gum, magnesium aluminum silicate, polyethylene glycol, carboxymethyl cellulose, and carboxyethyl cellulose.

[0036] The stabilizing agent is one or more of epichlorohydrin, epoxidized soybean oil, and sodium benzoate.

[0037] The emulsifying agent is one or more of YUS-110 emulsifying agent, methyl oleate, and other emulsifying agents suitable for plant oils.

[0038] The defoaming agent is one or more of silicone oil, silicone compound, etc.

[0039] The present application also provides the use of the above-mentioned insecticidal composition for controlling pests in cotton, eggplant, and corn, etc.

[0040] The present application provides an insecticidal composition and insecticide. The composition is composed of fluoximide 0.1-70 parts by weight and spirodiclofen 0.1-70 parts by weight. Compared with the prior art, the insecticidal composition and insecticide of the present application have the following beneficial effects:

[0041] 1) The effective components of the insecticidal composition of the present application include fluoximide and spirodiclofen. Fluoximide is an isoxazole insecticide, and spirodiclofen belongs to the quinomethionate acaricide. The combination of different types of components has obvious synergistic effect on cotton bollworm, Turkey mite, two-spotted spider mite, truncated spider mite, corn borer, and thrips, etc. through multiple different action modes, which is obviously superior to the effect of fluoximide single agent, spirodiclofen single agent, etc. While effectively reducing the dosage of fluoximide and spirodiclofen, the target range of the two insecticides can be expanded, the number of pesticide applications can be reduced, and the production cost can be reduced.

[0042] 2) The water suspension agent has multiple advantages, such as: ① water as a base, which can be quickly dispersed in water, is environmentally friendly, safe, and low in cost; ② no flash point, safe in storage and transportation, and high in biological availability.

[0043] 3) The water dispersible granule has multiple advantages, such as: ① no organic solvent, safe for operators and the environment; ② no dust in the process of packaging, storage and use, reducing the harm of dust to the human body; ③ good flowability of the dosage form, no adhesion, no caking, and no wall sticking, and the packaging can be recycled; ④ high content of active ingredients.

[0044] 4) The oil suspension agent has multiple advantages, such as: the dilution carrier is an environmentally friendly oil, has good adhesion and spreading properties, and is strong in rainwater washing capacity.

[0045] 5) Reduce the number of pests and reduce the degree of harm of pests to crops.

[0046] 6) It is very safe to mammals, aquatic organisms, beneficial organisms, natural enemies and other non-target organisms, and has the characteristics of high efficiency and low risk. DETAILED DESCRIPTION

[0047] The present application discloses an insecticidal composition and an insecticide, and those skilled in the art can refer to the content herein and appropriately improve the process parameters for implementation. It is particularly pointed out that all similar substitutions and changes are obvious to those skilled in the art, and they are considered to be included in the present application. The method and application of the present application have been described by preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit and scope of the present application, to realize and apply the present application technology.

[0048] The raw materials or adjuvants used in the insecticidal composition and insecticide provided by the present application can be purchased from the market.

[0049] The present application will be further described below in conjunction with examples:

[0050] Example 1: 18% water suspension agent

[0051] Formula (weight ratio): fluoximide 11%, spirodiclofen 7%, dispersing agent Atlo 4913 17%, Disperso BB4 47%, ethylene glycol 6%, xanthan gum 6%, and water to 100%.

[0052] Preparation method: first dilute spirodiclofen with water, then add fluoximide to prepare a mixed solution, and then add the adjuvant dispersing agent Atlo 4913, ethylene glycol and Disperso BB4, mix with xanthan gum after grinding, and mix uniformly at high speed to obtain the water suspension agent.

[0053] Example 2: 37% dispersible oil suspension

[0054] Formulation (wt%): fluoximide 23%, spirodiclofen 14%, sodium lignosulfonate 10%, YUS-110 emulsifier 12%, ethylene glycol 4%, xanthan gum 2%, epoxy soybean oil 3%, silicone oil 2%, and vegetable oil (soybean oil) to make up to 100%.

[0055] Preparation method: fluoximide and spirodiclofen were weighed into a container, emulsifiers, dispersants and soybean oil were added, mixed and then dispersed at high speed, then ground with a sand mill, and the dispersible oil suspension was obtained after filtration.

[0056] Example 3: 65% water dispersible granules

[0057] Formulation (wt%): fluoximide 40%, spirodiclofen 25%, sodium dodecyl sulfate 6%, SP-2836 polycarboxylate dispersant 7%, sodium sulfate 3%, kaolin 8%, and diatomite to make up to 100%.

[0058] Preparation method: first dilute spirodiclofen with water, then add fluoximide to prepare a mixture, then add the adjuvants, and then crush with an air flow pulverizer to obtain water dispersible granules.

[0059] Test example: field test 1 field efficacy test of fluoximide and spirodiclofen composition for controlling cotton bollworm

[0060] 1. Test agents

[0061] The test agents were the insecticidal compositions of examples 1-3 of the present application (test groups 1-3), 10% fluoximide SC (control group 1), and 24% spirodiclofen SC (control group 2).

[0062] 2. Test design

[0063] The test was conducted at the Xinjiang Academy of Agricultural Sciences Cotton Research Institute Boshen Test Station, and the spraying equipment was a Spanish Nadebi backpack manual sprayer, with a spraying amount of 600 L·hm -2 Liquid. The specific profile of the test site is as follows:

[0064] The cotton variety was Zhongmiansuo 49, sown on April 28, 2024, with a planting density of 123,000 plants·hm -2 , a row spacing of 76 cm, and a plant spacing of 9 cm. The spraying date was July 10, 2024, with 4 replicates per treatment, and at this time, the cotton bollworm reached 10-20 larvae per plant.

[0065] 3. Investigation content

[0066] Each cell selects 25 representative cotton plants from the middle 4 rows for fixed point, and hangs a label. The pre-treatment baseline is investigated on the day of pesticide application, and the residual insect amount on the fixed point of cotton is investigated at 3d, 7d after pesticide application respectively. The insect population reduction rate of each investigation cell is calculated in total. The insect population reduction rate in the pesticide treatment group is compared with the blank control group, and the corrected control effect (%) is calculated.

[0067] 4. Calculation formula

[0068]

[0069]

[0070] 5. Test results

[0071] As can be seen from Table 1, the following five treatments have different control effects on cotton bollworm by spraying. The effective ingredient dosage of example 2 of the present application is lower than the sum of the effective ingredient dosages of control 1 and control 2, and the corrected control effects of example 2 at 3d and 7d after pesticide application are 85.0% and 94.1% respectively. The corrected control effects of example 2 at 3d and 7d after pesticide application are higher than the theoretical pesticide effects of the corresponding other treatments. Therefore, the combination of fluoximide and spirodiclofen has a significant synergistic effect, and no phytotoxicity of the combined pesticide on cotton is found during the test period.

[0072] Table 1 Field test of fluoximide and spirodiclofen composition for controlling cotton bollworm

[0073]

[0074] Note: "-" represents "blank" or "no need to calculate"; the same below.

[0075] Test example: field test 2 field test of fluoximide and spirodiclofen composition for controlling Turkeyistan leaf mite

[0076] 1. Test agent

[0077] The test agent is the insecticidal composition of examples 1-3 of the present application (test groups 1-3), 10% fluoximide SC (control group 1), and 24% spirodiclofen SC (control group 2).

[0078] 2. Test design

[0079] This test is arranged in the Xinjiang Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Boshen test station, the spraying equipment is Spanish Nadebi backpack manual sprayer, and the spraying amount per mu is 600L·hm -2 Pesticide solution. The specific profile of the test site is as follows:

[0080] Cotton variety is Zhongmiansuo 49, sowing on April 28, 2024, mulching, planting density is 123,000 plants per hectare -2 , row spacing is 76 cm, plant spacing is 9 cm, and the application date is June 23, 2024. There are 4 replicates for each treatment, and this is the initial stage of the occurrence of T. urticae.

[0081] 3. Investigation content

[0082] 25 representative cotton leaves were selected from the middle 4 rows of each plot for fixed-point investigation, and a label was hung. The pre-treatment baseline was investigated on the day of application, and the residual insect quantity on the leaves of each point was investigated 3d and 7d after application. The overall insect population reduction rate of each plot was calculated. The insect population reduction rate of the insecticide treatment group was compared with the blank control group, and the corrected control effect (%) was calculated.

[0083] 4. Calculation formula

[0084]

[0085] 5. Test results

[0086] As can be seen from Table 2, the following 5 treatments have different control effects on T. urticae by spraying. The effective ingredient dosage of Example 2 of the present application is lower than the sum of the effective ingredient dosages of Control 1 and Control 2, and the corrected control effects of Example 2 3d and 7d after application are 88.8% and 96.9%, respectively. The corrected control effects of Example 2 3d and 7d after application are higher than the theoretical control effects of the corresponding other treatments. Therefore, the combination of fluoximide and spirodiclofen has a significant synergistic effect, and no phytotoxicity of the combined pesticide to cotton was found during the test.

[0087] Table 2 Field test of fluoximide and spirodiclofen composition for controlling T. urticae

[0088]

[0089] Test example: Field test 3 of fluoximide and spirodiclofen composition for controlling T. urticae

[0090] 1. Test agent

[0091] The test agents are the insecticidal compositions of Examples 1-3 of the present application (test groups 1-3), 10% fluoximide SC (control group 1), and 24% spirodiclofen SC (control group 2).

[0092] 2. Test design

[0093] This test was arranged in the test farm of the Chinese Academy of Agricultural Sciences Cotton Research Institute in Baibi Town, Anyang County, Henan Province, and the spraying equipment was a Singapore LiNong backpack manual sprayer, with a spraying amount of 900 L per hectare-2 Liquid. The specific profile of the test field is as follows:

[0094] The eggplant variety was Dahongpao, transplanted and planted on March 28, 2024, with mulching, and the planting density was 52.5 thousand plants per hm -2 The application date was May 26, 2024, and there were 4 repetitions per treatment.

[0095] 3. Investigation content

[0096] Randomly sample 5 points per plot, investigate 2 plants per point, and select 2 leaves with mites in the middle of each plant for fixed plant and leaf investigation. Investigate the pre-treatment base on the day of application, and investigate the residual insect quantity on the eggplant leaves at each point on the 3rd and 7th day after application. Calculate the insect population reduction rate of each plot as a whole. Compare the insect population reduction rate in the pesticide treatment group with the blank control group, and calculate the corrected control effect (%).

[0097] 4. Calculation formula

[0098]

[0099] 5. Test results

[0100] As can be seen from Table 3, the following 5 treatments have different control effects on T. urticae. The effective ingredient dosage of Example 2 of the present application is lower than the sum of the effective ingredient dosages of Control 1 and Control 2, and the corrected control effects of Example 2 on the 3rd and 7th day after application are 88.4% and 93.8%, respectively. The corrected control effects of Example 2 on the 3rd and 7th day after application are higher than the theoretical pesticide effects of the corresponding other treatments. Therefore, the combination of fluoximide and spirodiclofen has a significant synergistic effect, and no phytotoxicity of the combined pesticide on eggplant is found during the test period.

[0101] Table 3 Field test of fluoximide and spirodiclofen composition for controlling T. urticae

[0102]

[0103] Test example: Field test 4 of fluoximide and spirodiclofen composition for controlling T. urticae

[0104] 1. Test pesticides

[0105] The test pesticides are the insecticidal compositions of Examples 1-3 of the present application (test groups 1-3), 10% fluoximide SC (control group 1), and 24% spirodiclofen SC (control group 2).

[0106] 2. Test design

[0107] The experiment was arranged in Bai Bi Town, Anyang County, Henan Province, China National Cotton Research Institute test farm, and the spraying equipment was Spanish Nadebi backpack manual sprayer, with a spraying amount of 600 L·hm -2 Pesticide solution. The specific overview of the test site is as follows:

[0108] The cotton variety was Zhongmiansuo 49, sowed on April 24, 2024, with a planting density of 5.5 million plants·hm -2 , the row spacing was 80 cm, and the spraying date was June 23, 2024, with 4 repetitions per treatment. At this time, the initial and peak stages of T. absoluta occurred.

[0109] 3. Investigation content

[0110] 25 leafy cotton plants were selected from the middle 4 rows in each plot, and the representative cotton plants were fixed and labeled. The pre-treatment baseline was investigated on the day of spraying, and the residual insect quantity on the cotton leaves at each point was investigated at 3d and 7d after spraying. The overall insect population reduction rate of each plot was calculated. The insect population reduction rate of the pesticide treatment group was compared with the blank control group, and the corrected control effect (%) was calculated.

[0111] 4. Calculation formula

[0112]

[0113] 5. Test results

[0114] As can be seen from Table 4, the following 5 treatments have different control effects on T. absoluta. The effective ingredient dosage of Example 2 of the present application is lower than the sum of the effective ingredient dosages of Control 1 and Control 2, and the corrected control effects of Example 2 at 3d and 7d after spraying are 92.0% and 95.1%, respectively. The corrected control effects of Example 2 at 3d and 7d after spraying are higher than the theoretical control effects of the corresponding other treatments. Therefore, the combination of fluoximide and spirodiclofen has a significant synergistic effect, and no phytotoxicity of the combined pesticide to cotton was found during the test.

[0115] Table 4 Field test of fluoximide and spirodiclofen combination for controlling T. absoluta

[0116]

[0117] Test example: Field test 5 of fluoximide and spirodiclofen combination for controlling corn borer

[0118] 1. Test pesticide

[0119] The test pesticides were the insecticidal compositions of Examples 1-3 of the present application (test groups 1-3), 10% fluoximide SC (control group 1), and 24% spirodiclofen SC (control group 2).

[0120] 2. Test design

[0121] The test was arranged in the experimental farm of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences in Baibi Town, Anyang County, Henan Province. The spraying equipment was a Spanish Nadebe backpack manual sprayer, and the spraying amount per mu was 600 L·hm -2 Pesticide solution. The specific overview of the test site is as follows:

[0122] The corn variety was Anyu 107, sowed on May 22, 2024, and the planting density was 75,000 plants·hm -2 The spraying date was June 28, 2024, 4 repetitions per plot, and the corn borer occurred at the peak of hatching at this time.

[0123] 3. Investigation content

[0124] 25 representative corn plants were selected from the middle 4 rows in each plot for fixed-pointing and labeling. The pre-treatment baseline was investigated on the day of spraying, and the residual insect quantity on the corn at each point was investigated 3d and 7d after spraying. The insect population reduction rate of each plot was calculated overall. The insect population reduction rate of the pesticide treatment group was compared with the blank control group, and the corrected control effect (%) was calculated.

[0125] 4. Calculation formula

[0126]

[0127] 5. Test results

[0128] As can be seen from Table 5, the following 5 treatments have different control effects on corn borers by spraying. The effective ingredient dosage of Example 2 of the present application is lower than the sum of the effective ingredient dosages of Control 1 and Control 2, and the corrected control effects of Example 2 3d and 7d after spraying are 86.5% and 95.8%, respectively. The corrected control effects of Example 2 3d and 7d after spraying are higher than the theoretical control effects of the corresponding other treatments. Therefore, the combination of fluoxazole amide and spirodil has a significant synergistic effect, and no phytotoxicity of the combined pesticide to corn was found during the test.

[0129] Table 5 Field test of fluoxazole amide and spirodil composition for controlling corn borer

[0130]

[0131] Test example: Field test 6 of fluoxazole amide and spirodil composition for controlling thrips

[0132] The test pesticides were the insecticidal compositions of Examples 1-3 of the present application (test groups 1-3), 10% fluoxazole amide SC (control group 1), and 24% spirodil SC (control group 2).

[0133] 2. Test design

[0134] The experiment was arranged in Xinjiang Academy of Agricultural Sciences Cotton Research Institute Bozhou Test Station, and the spraying equipment was Spanish Nadebi backpack manual sprayer, with a spraying amount of 600 L·hm -2 Liquid medicine. The specific overview of the test site is as follows:

[0135] The cotton variety was Zhongmiansuo 49, sowed on April 28, 2024, with a planting density of 123,000 plants·hm -2 , a row spacing of 76 cm, and a plant spacing of 9 cm. The spraying date was August 23, 2024, with 4 repetitions for each treatment, and the initial peak of the occurrence of the thrips at this time.

[0136] 3. Investigation content

[0137] 25 representative cotton plants were selected from the middle 4 rows in each plot for fixed-pointing and labeling. The pre-treatment baseline was investigated on the day of spraying, and the residual insect quantity on the cotton plants at each point was investigated 3d and 7d after spraying. The overall insect population reduction rate of each plot was calculated. The insect population reduction rate in the pesticide treatment group was compared with that in the blank control group, and the corrected control effect (%) was calculated.

[0138] 4. Calculation formula

[0139]

[0140]

[0141] 5. Test results

[0142] As can be seen from Table 6, the following 5 treatments have different control effects on the thrips by spraying. The effective ingredient dosage of Example 2 of the present application is lower than the sum of the effective ingredient dosages of Control 1 and Control 2, and the corrected control effects of Example 2 3d and 7d after spraying are 92.6% and 96.9%, respectively. The corrected control effects of Example 2 3d and 7d after spraying are higher than the theoretical pesticide effects of the corresponding other treatments. Therefore, the combination of flutriarim and spirodiclofen has a significant synergistic effect, and no phytotoxicity of the combined pesticide to cotton is found during the test period.

[0143] Table 6 Field test of flutriarim and spirodiclofen composition for controlling cotton thrips

[0144]

[0145] Test example: field test 7 field test of flutriarim and spirodiclofen composition for controlling cotton aphids

[0146] The tested pesticides are the insecticidal compositions of Examples 1-3 of the present application (test groups 1-3), 10% flutriarim SC (control group 1), and 24% spirodiclofen SC (control group 2).

[0147] 2. Test design

[0148] The test was arranged at the Xinjiang Academy of Agricultural Sciences Cotton Research Institute Boshen test station, and the spraying equipment was a Spanish Nadebi backpack manual sprayer, with a spraying amount of 600 L·hm -2 Pesticide solution. The specific profile of the test site is as follows:

[0149] The cotton variety was Zhongmiansuo 49, sowed on April 28, 2024, with a planting density of 123,000 plants·hm -2 , a row spacing of 76 cm, and a plant spacing of 9 cm. The spraying date was July 23, 2024, with 4 repetitions per treatment, and the initial peak of cotton aphid occurrence at this time.

[0150] 3. Investigation content

[0151] 25 representative cotton plants were selected from the middle 4 rows in each plot for fixed-pointing and labeling. The pre-treatment baseline was investigated on the day of spraying, and the residual insect quantity on the cotton plants at each point was investigated 3d and 7d after spraying. The overall insect population reduction rate of each plot was calculated. The insect population reduction rate in the pesticide treatment group was compared with the blank control group, and the corrected control effect (%) was calculated.

[0152] 4. Calculation formula

[0153]

[0154] 5. Test results

[0155] As can be seen from Table 7, the following 5 treatments have different control effects on cotton aphids. The effective ingredient dosage of Example 2 of the present application is lower than the sum of the effective ingredient dosages of Control 1 and Control 2, and the corrected control effects of Example 2 3d and 7d after spraying are 86.4% and 95.7%, respectively. The corrected control effects of Example 2 3d and 7d after spraying are higher than the theoretical control effects of the corresponding other treatments. Therefore, the combination of fluoximide and spirodiclofen has a significant synergistic effect, and no phytotoxicity of the combined pesticide to cotton was found during the test.

[0156] Table 7 Field test of fluoximide and spirodiclofen composition for controlling cotton aphids

[0157]

[0158] Therefore, the combination of fluoximide and spirodiclofen has a significant synergistic effect for controlling cotton bollworms, turkestan leaf mites, two-spotted spider mites, cassid leaf mites, corn borers, thrips, and aphids.

[0159] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An insecticidal composition, characterized by comprising, The composition consists of fluoximide 1-60 parts and spirodiclofen 1-30 parts by weight.

2. The insecticidal composition as claimed in claim 1, wherein, The composition consists of fluoximide 11 parts and spirodiclofen 7 parts by weight.

3. An insecticide, characterized in that, The insecticidal composition according to any one of claims 1-2 and a pesticidally acceptable adjuvant.

4. The insecticide of claim 3, wherein, The dosage form of the insecticide is water suspension, water dispersible granule or dispersible oil suspension.

5. The insecticide of claim 4, wherein, The components and weight percentages of the water suspension are as follows: fluoximide 0.1%-70%, spirodiclofen 0.1%-70%, thickening agent 1%-8%, wetting agent 1%-12%, antifreeze agent 1%-6%, dispersant 1%-14%, and water to make up to 100%.

6. The insecticide of claim 4, wherein, The components and weight percentages of the water dispersible granule are as follows: fluoximide 0.1%-70%, spirodiclofen 0.1%-70%, dispersant 1%-11%, wetting agent 1%-18%, disintegrant 1%-8%, and filler to make up to 100%.

7. The insecticide of claim 4, wherein, The components and weight percentages of the dispersible oil suspension are as follows: fluoximide 0.1%-70%, spirodiclofen 0.1%-70%, stabilizer 1%-18%, dispersant 1%-16%, emulsifier 1%-8%, thickening agent 1%-5%, defoaming agent 0-8%, antifreeze agent 1%-6%, and vegetable oil to make up to 100%.

8. The insecticide of any one of claims 5 to 6, wherein, The wetting agent is one or more of Terspense 4896, triethanolamine lauryl sulfate, monoethanolamine lauryl sulfate, sodium dodecyl sulfate, Morwet EFW, sodium dodecylbenzenesulfonate, butyl naphthalene sulfonic acid, fatty alcohol polyoxyethylene ether, polyethylene glycol 200, NP-10, Disperso BB4, and Multiwe 8269.

9. The insecticide of any one of claims 5 to 7, wherein, The dispersant is one or more of Morwet D-425, sodium lignosulfonate, Atlo 4913, Terspense 2500, Atlas G-5002L, Atlas G-5000, dispersant NNO, naphthalene sulfonate, and Dispersol PSR 19 polycarboxylate dispersant.

10. The insecticide as claimed in claim 6, wherein, The disintegrant is one or more of wgwin D800, inorganic salt, sodium carboxymethyl cellulose, and bentonite; and the filler is one or more of kaolin, talcum powder, diatomite, bentonite, and pottery clay.

11. The insecticide as set forth in claim 5 or claim 7, characterized by, The antifreeze agent is one or more of ethylene glycol, glycerol, and propylene glycol; and the thickening agent is one or more of xanthan gum, magnesium aluminum silicate, polyethylene glycol, carboxymethyl cellulose, and carboxyethyl cellulose.

12. The insecticide of claim 7, wherein The stabilizer is one or more of epichlorohydrin, epoxidized soybean oil, and sodium benzoate; the emulsifier is one or both of YUS-110 emulsifier and methyl oleate; and the defoaming agent is one or both of silicone oil and silicone compound.

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