Mite killing auxiliary agent as well as preparation method and application thereof

Abstract

The invention discloses an acaricidal auxiliary agent and a preparation method and application thereof, and relates to the field of acaricidal auxiliary agents, and the acaricidal auxiliary agent comprises the following components by mass: 15-50% of terminated polyether synthetic organosilicon, 30-80% of alkyl or phenyltriethoxysilane, and 5-15% of an emulsifier. The terminated polyether synthesized organic silicon provides wetting ability and reduces the surface tension of the auxiliary agent aqueous solution, so that the diluent can better cover the plant surface. Alkyl or phenyl triethoxy silane can form a film to cover the epidermis of red spiders and eggs to isolate air, so that pests die from suffocation. According to the method, a physical method is used for independently killing red spiders including eggs, so that the red spiders cannot generate drug resistance, and environmental pollution cannot be caused.

Description

Technical Field

[0001] This invention relates to the field of acaricide adjuvants, specifically to an acaricide adjuvant, its preparation method, and its application. Background Technology

[0002] Spider mites are small, highly concealed (mostly hiding on the undersides of leaves), reproduce rapidly (more than ten generations a year), are highly resistant to pesticides, and cause significant damage. The use of traditional pesticides has considerable limitations. For example, etoxazole and spirodiclofen only kill eggs and larvae, and are ineffective against adult mites; bifenazate requires low temperatures (not exceeding 30 degrees Celsius) for application. Excessive pesticide use can lead to pesticide resistance in spider mites, and increased pesticide dosage causes excessive environmental pollution. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an acaricide adjuvant, its preparation method and application.

[0004] The technical solution of the present invention is as follows: An acaricide adjuvant comprising, by weight percentage: 15-50% end-capped polyether synthesized organosilicon, 30-80% alkyl or phenyltriethoxysilane, and 5-15% emulsifier.

[0005] Among them, the end-capped polyether synthesized organosilicon (end-capped polyether heptamethyltrisiloxane, end-capped polyether octamethyltetrasiloxane): provides wetting ability, reduces the surface tension of the auxiliary aqueous solution, and enables the diluted solution to better cover the plant surface.

[0006] Alkyl or phenyltriethoxysilanes: can form their own films, covering the spider mite and egg skin, isolating them from air, and suffocating the pests to death.

[0007] Emulsifiers make the mixture more uniform and improve the uniformity of film formation.

[0008] As a preferred embodiment of the present invention, the end-capped polyether synthesized organosilicon includes end-capped polyether heptamethyltrisiloxane and / or end-capped polyether octamethyltetrasiloxane.

[0009] As a preferred embodiment of the present invention, the emulsifier includes at least one selected from sulfonates, phosphates, and carboxylates.

[0010] The present invention also discloses a method for preparing an acaricide adjuvant, which involves mixing end-capped polyether synthesized organosilicon, alkyl or phenyltriethoxysilane and emulsifier evenly to obtain the adjuvant.

[0011] As a preferred embodiment of the present invention, the mixing method is to stir and mix evenly at 20-40°C.

[0012] The present invention also discloses the application of an acaricide adjuvant in the preparation of acaricide drugs.

[0013] Preferably, the acaricide adjuvant is diluted with water 1000-5000 times and sprayed for the control of spider mites.

[0014] The beneficial effects of this invention are: this invention uses physical methods to kill spider mites, including their eggs, individually. The acaricide adjuvant can form a film on the plant surface, isolating it from the air and causing the pests to suffocate and die. It will not cause spider mites to develop drug resistance and will not cause environmental pollution. Detailed Implementation

[0015] The embodiments of the present invention are described in detail below. These embodiments are exemplary and are only used to explain the present invention, and should not be construed as limiting the invention. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in the art or according to the product instructions. Reagents or instruments used, unless otherwise specified, are all commercially available conventional products.

[0016] Example 1 Mix 22% (by weight) of H-8077 (methyl-terminated polyether heptamethyltrisiloxane), 70% of dodecyltriethoxysilane, and 8% of calcium dodecylbenzenesulfonate, and stir until homogeneous at 20-40°C.

[0017] Example 2 Mix 22% by weight of H-8078 (butyl-terminated polyether heptamethyltrisiloxane), 70% by weight of dodecyltriethoxysilane, and 8% by weight of calcium dodecylbenzenesulfonate, and stir until homogeneous at 20-40°C.

[0018] Example 3 Mix 30% H-8087 (methyl-terminated polyether octamethyltetrasiloxane), 65% dodecyltriethoxysilane, and 5% calcium dodecylbenzenesulfonate by mass percentage, and stir until homogeneous at 20-40℃.

[0019] Example 4 Mix 28% by weight of H-8087 (butyl-terminated polyether octamethyltetrasiloxane), 65% by weight of dodecyltriethoxysilane, and 7% by weight of calcium dodecylbenzenesulfonate, and stir until homogeneous at 20-40°C.

[0020] Example 5 Mix 40% by weight of H-8077 (methyl-terminated polyether heptamethyltrisiloxane), 50% of hexadecyltriethoxysilane, and 10% of sodium dioctyl succinate sulfonate, and stir until homogeneous at 20-40°C.

[0021] Example 6 Mix 30% by weight of H-8087 (methyl-terminated polyether octamethyltetrasiloxane), 65% by weight of phenyltriethoxysilane, and 5% by weight of sodium dioctyl succinate sulfonate, and stir until homogeneous at 20-40°C.

[0022] Comparative Example 1 Dilute 20wt% abamectin and etoxazole (4wt% abamectin + 16wt% etoxazole) with water 1500 times.

[0023] Comparative Example 2 Clear water.

[0024] Indoor efficacy tests were conducted on the above-described embodiments and comparative examples, and the test results are shown in Table 1.

[0025] Test method: Dilute the example sample with water 1500 times and spray. Experimental conditions: temperature 25±1℃; test insect: spider mite; The experiment was conducted in accordance with GB13917.8-92 "Indoor Efficacy Test Methods for Pesticide Registration and Sanitary Insecticides - Field Efficacy Test Methods for Aerosols" to test the 24-hour mortality rate.

[0026] Table 1 Performance test results of the examples and comparative examples Outdoor bioassay method: On July 29th, in Binyang County, Nanning City, a controlled-pressure manual sprayer was used to uniformly spray the entire Wogan mandarin orange tree, with 1.5 kg of spray solution per tree. Five mandarin orange trees were selected for each experiment, surrounded by protective rows. A random survey method was used, selecting three trees and taking five leaves from each of the four cardinal directions (east, south, west, and north) on the upper, middle, and lower parts of the plant. The upper and lower surfaces of the leaves were observed using a handheld magnifying glass. The number of live mites was counted before spraying and at 1 hour, 3 days, 5 days, and 7 days after spraying. The control effect was calculated using the formula: Control effect (%) = [1 - (Number of live mites before spraying in the control area × Number of live mites after spraying in the treatment area) / (Number of live mites after spraying in the control area × Number of live mites before spraying in the treatment area)] × 100 Table 2 Outdoor performance test results of the examples and comparative examples As can be seen from Tables 1 and 2, the acaricide adjuvant prepared by this invention not only has a rapid acaricide effect, but also a long-lasting acaricide effect. The main reason may be that the substance used can react quickly to form a film, suffocating the red spider mites to death. This is a physical acaricide, which is in line with green development.

[0027] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various other corresponding changes and modifications based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A mite-killing adjuvant, characterized in that, Including components calculated as a percentage by mass: 15-50% end-capped polyether synthesized organosilicon, 30-80% alkyl or phenyltriethoxysilane, and 5-15% emulsifier.

2. The acaricide adjuvant according to claim 1, characterized in that, The terminated polyether synthesized organosilicon includes terminated polyether heptamethyltrisiloxane and / or terminated polyether octamethyltetrasiloxane.

3. The acaricide adjuvant according to claim 1, its preparation method, and its application, characterized in that, The emulsifier includes at least one of sulfonates, phosphates, and carboxylates.

4. A method for preparing an acaricide adjuvant, characterized in that, The end-capped polyether is synthesized into organosilicon, alkyl or phenyltriethoxysilane, and emulsifier, which are then mixed evenly to obtain the final product.

5. The preparation method according to claim 4, characterized in that, The mixing method involves stirring the mixture evenly at 20-40°C.

6. The use of an acaricide adjuvant as described in claims 1-3 or an acaricide adjuvant prepared by any of the preparation methods described in claims 4-5 in the preparation of acaricides.

7. The application of the acaricidal adjuvant as described in claim 6 in the preparation of acaricidal drugs, characterized in that, Dilute the acaricide adjuvant with water 1000-5000 times and spray for the control of spider mites.

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