Insecticidal composition containing pyrethroid and insecticide
By combining fluorosilestine with thiozolamide, matrine or epoxycaploprine to form insecticidal compositions within a specific mass ratio range, the existing pyrethroid agents are solved to lead to pest resistance. The problem has achieved effective prevention and control of agricultural pests such as aphids and reduced the cost of prevention and control.
Patent Information
- Application Number
- CN202411519422.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-02-07
AI Technical Summary
Due to long-term use of existing pyrethroids, pests have shown obvious resistance to them, affecting agricultural production.
By combining fluorosilyl with thiomycin, matrine or epoxycaploprine, an insecticidal composition within a specific mass ratio range is formed to enhance the prevention of agricultural pests such as aphids.
This compounding scheme has synergistic effects on aphids within the mass ratio of 1-16:24-1, 1-30:8-1 and 1-10:10-1, which overcomes and delays the resistance of pests. , the effect is better than the single dose of prevention and can reduce the prevention and treatment cost.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of agricultural pests, and particularly relates to an insecticide composition and insecticide containing pyrethroids. Background Art
[0002] Silafiuofen is a broad-spectrum insecticide and acaricide developed by Aventis of Japan. Its molecular formula is C25H29FO2Si, molecular weight is 408.59, and its structural formula is:
[0003]
[0004] The pure product of fluosilicate is a light yellow liquid, slightly soluble in water, miscible with organic solvents, and not easily decomposed under alkaline conditions. Fluosilicate is a sodium ion channel regulator that acts on the insect nervous system and can keep the sodium ion channels unobstructed. The sodium ion channels participate in the conduction of action potentials along nerve axons, causing insects to be overexcited. In some cases, it can also cause nerve conduction blockage. Fluosilicate is mainly used for pest control in rice fields, and can also be used for pest control and mites on other crops; it has a good repellent effect on termites.
[0005] In the process of crop production, it is common to use pesticides in large quantities and frequently, which makes it easy for pests to develop resistance to the agents, resulting in the increasingly serious occurrence of resistant pests, affecting agricultural production. Although pyrethroids such as flutolan have good control effects on aphids and other pests, with their long-term use, pests have shown obvious resistance to them. Therefore, it is of great significance to find insecticide compositions or insecticides that have good control effects on resistant pests and can delay the development of insect resistance to insecticides for the green and healthy development of agriculture. Summary of the invention
[0006] The object of the present invention is to provide an insecticide composition and insecticide containing pyrethroids to solve the problem that although pyrethroids such as flumethrin have good control effects on various pests such as aphids, the pests have shown obvious resistance to them with their long-term use.
[0007] To achieve the above object, the present invention provides the following technical solutions:
[0008] A pyrethroid-containing insecticidal composition, wherein the pyrethroid-containing insecticidal composition is compounded with pyrethroid and a second active ingredient; wherein the pyrethroid is silafluthrin; and the second active ingredient is selected from any one of thiophanate, matrine and cyclohexanopride.
[0009] Preferably, the mass ratio of flutosan to thiobencarb is 1-16:24-1.
[0010] Preferably, the mass ratio of flusilathrin to matrine is 1-30:8-1.
[0011] Preferably, the mass ratio of silanol to cyclohexapride is 1-10:10-1.
[0012] The present invention also provides an insecticide, which is composed of an active ingredient and an auxiliary ingredient; wherein the active ingredient is the insecticide composition containing pyrethroids; and the auxiliary ingredient is an auxiliary ingredient allowed to be added in pesticide science. When preparing the insecticide, technicians in this field can select appropriate auxiliary ingredients according to the dosage form to be processed.
[0013] Preferably, the mass of the active ingredient accounts for 1-55% of the total mass of the insecticide.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] The present invention compounds the pyrethroid agent silafluthrin with thiobencarb, matrine or cyclohexapride; silafluthrin and thiobencarb in a mass ratio range of 1-16:24-1, silafluthrin and matrine in a mass ratio range of 1-30:8-1, and silafluthrin and cyclohexapride in a mass ratio range of 1-10:10-1 all produce a synergistic effect on agricultural pests such as aphids, overcome and delay pest resistance, have better effects than a single-dose control effect, and can reduce control costs. DETAILED DESCRIPTION
[0016] Based on the embodiments of the present invention, all other embodiments obtained by technicians in this field without making any creative work shall fall within the scope of protection of the present invention.
[0017] 1. Test reagents
[0018] 93% fluosilicate technical (Jiangsu Youjia Plant Protection Co., Ltd.), 95% thiocarbamide technical (Zhejiang Yulong Biotechnology Co., Ltd.), 98% matrine technical (Shanghai Yuanye Biotechnology Co., Ltd.), 95% cyclohexapride technical (Sichuan Hebang Biotechnology Co., Ltd.)
[0019] 2. Test pests
[0020] Aphids were collected from rice fields and reared for 6 generations. Healthy wingless adult aphids with uniform insect bodies were selected as test pests.
[0021] 3. Test method (refer to "NY / T 1154.6-2006 Pesticide Indoor Bioassay Test Guidelines Insecticides Part 6: Insecticide Activity Test Insect Immersion Method")
[0022] The test agent was dissolved in dimethyl sulfoxide and then diluted with 0.1% Tween-80 aqueous solution to prepare a single-dose mother solution. The concentration of the active ingredient in the single-dose mother solution was 8000 mg / L. Set up multiple groups of matching combinations, and then dilute the single-dose mother solution and the matching mixture with 0.1% Tween-80 aqueous solution to 5 mass concentration gradients. Each mass concentration solution is 50mL, and the above agents are prepared and used immediately. Then the test pests were completely immersed in the solution for 10s and then taken out. The excess solution was absorbed and transferred to the original conditions for continued breeding. Each mass concentration solution was repeated 4 times, and 25 insects were immersed in each repetition. At the same time, the treatment containing only 0.1% Tween-80 aqueous solution was set as a blank control. After 36 hours of insect immersion treatment, the death of the test pests was investigated, and the corrected mortality rate of different solution treatments was calculated.
[0023]
[0024] In the above formula: P--mortality rate, unit is %; K--number of dead insects; N--total number of insects treated.
[0025]
[0026] In the above formula: P1--corrected mortality rate, unit is %; P t --Treatment mortality rate, in %; P0--blank control mortality rate, in %.
[0027] 4. Data Analysis
[0028] Regression analysis was performed on the logarithmic values of drug concentration and the corrected mortality probability values to calculate the LC of single and mixed drugs 50 The Sun Yunpei method was used to calculate the co-toxicity coefficient (CTC value) of the mixture, and the synergistic effect of the mixed agents was evaluated based on the co-toxicity coefficient value. The results are shown in Table 1-3.
[0029] Table 1 The combined toxicity results of silafluthrin and thiobencarb against Macrosiphum avenae
[0030]
[0031]
[0032] The combined toxicity activity test showed (Table 1) that the combination of flutoxin and sulfanilamide had good indoor activity against Macrosiphum avenae. When the combined mass ratio was within 1-16:24-1, the co-toxicity coefficient against Macrosiphum avenae was greater than 120, showing a synergistic effect.
[0033] Table 2 The combined toxicity results of flutosan and matrine against Macrosiphum avenae
[0034]
[0035]
[0036] The combined toxicity activity test showed (Table 2) that the combination of flusilathrin and matrine had good indoor activity against Macrosiphum avenae. When the combined mass ratio was within 1-30:8-1, the co-toxicity coefficient against Macrosiphum avenae was greater than 120, showing a synergistic effect.
[0037] Table 3 The combined toxicity results of silafluthrin and cyclohexaprid against Aphid graminis
[0038]
[0039]
[0040] The combined toxicity activity test showed (Table 3) that the combination of flutoxin and cyclohexaprid had good indoor activity against Macrosiphum avenae. When the combined mass ratio was within 1-10:10-1, the co-toxicity coefficient against Macrosiphum avenae was greater than 120, showing a synergistic effect.
[0041] In summary, the present invention compounds the pyrethroid agent silafluthrin with thiobencarb, matrine or cyclohexapride, and silafluthrin and thiobencarb in the mass ratio range of 1-16:24-1, silafluthrin and matrine in the mass ratio range of 1-30:8-1, and silafluthrin and cyclohexapride in the mass ratio range of 1-10:10-1 all produce a synergistic effect on agricultural pests such as aphids, overcome and delay pest resistance, have better effects than a single-agent control effect, and can reduce the cost of prevention and control.
Claims
1. An insecticidal composition containing pyrethroids, characterized in that: The pyrethroid-containing insecticidal composition is compounded by pyrethroid and a second active ingredient; wherein the pyrethroid is silafluthrin; and the second active ingredient is selected from any one of thiophanate, matrine and cyclohexaneprin.
2. The insecticidal composition containing pyrethroids according to claim 1, characterized in that: The mass ratio of flutosan and thiobencarb is 1-16:24-1.
3. The insecticidal composition containing pyrethroids according to claim 1, characterized in that: The mass ratio of flusilathrin to matrine is 1-30:8-1.
4. The insecticidal composition containing pyrethroids according to claim 1, characterized in that: The mass ratio of silafluthrin to cyclohexaprid is 1-10:10-1.
5. An insecticide, characterized in that: The insecticide is composed of an active ingredient and an auxiliary ingredient; wherein the active ingredient is the insecticide composition containing pyrethroids as described in claims 1-4; and the auxiliary ingredient is an auxiliary ingredient allowed to be added in pesticide science.
6. The insecticide according to claim 5, characterized in that The mass of the active ingredient accounts for 1-55% of the total mass of the insecticide.