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Micro-emulsion with aphid alarm pheromone analogue and preparation method for micro-emulsion

A technology of pheromones and analogues, applied in botany equipment and methods, insecticides, pest repellants, etc., can solve the problems of unfavorable field use and commercialization, small molecular weight and poor stability of natural EBF, and achieve storage And the effect of safe use, low production cost and good stability

Inactive Publication Date: 2013-08-14
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular weight of natural EBF is small, and there are conjugated double bonds, so it is easy to volatilize and be oxidized in the air, and has poor stability, which is not conducive to field use and commercialization

Method used

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  • Micro-emulsion with aphid alarm pheromone analogue and preparation method for micro-emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 2.21g of aphid alarm pheromone analog CAU-1204 (original drug), add 0.6g of toluene, 0.6g of methanol and 1.8g of DMF, stir until fully dissolved; add 1.5g of compound emulsifier 4068 and 1.5g of phenylethyl Phenol polyoxyethylene ether, stir evenly; slowly add water dropwise to 100%, stir while adding dropwise to make it evenly mixed, it is transparent and uniform liquid, with a total mass of 10g, and the aphid alarm pheromone with 20% active ingredient content can be prepared Analog CAU-1204 microemulsion.

[0034] Assuming that 20 grams of 20% CAU-1204 microemulsion is needed to control wheat aphids per mu of wheat field, the field dosage is 4 grams per mu.

[0035] For field control, use 20 grams of 20% CAU-1204 microemulsion per mu of wheat field, dilute 1000 times with water and spray. After 7 days, the population reduction rate of aphids will reach more than 75%, and it is safe to natural enemies and other non-target organisms.

Embodiment 2

[0037] Weigh 2.21g of aphid alarm pheromone analog CAU-1204 (original drug), add 0.6g of toluene, 0.6g of methanol and 1.8g of DMF, stir until fully dissolved; add 2.0g of compound emulsifier 4068 and 1.0g of phenylethyl Phenyl polyoxyethylene polyoxypropylene ether, stir evenly; slowly add water dropwise to 100%, stir while adding dropwise to make it evenly mixed, it is a transparent or translucent uniform liquid, with a total mass of 10g, and the active ingredient content is 20% microemulsion of aphid alarm pheromone analog CAU-1204.

[0038] Need 15 grams of 20%CAU-1204 microemulsion to prevent and control the tube aphid of vegetables by every mu of vegetable field, then its field consumption is 3 grams / mu.

[0039] For field control, use 15 grams of 20% CAU-1204 microemulsion per mu of vegetable field, dilute 1000 times with water and spray. After 7 days, the population reduction rate of aphids will reach more than 80%, and it is safe to natural enemies and other non-targe...

Embodiment 3

[0041] Weigh 2.21g of aphid alarm pheromone analog CAU-1204 (original drug), add 1.5g of cyclohexanone and 1.5g of methanol, stir until fully dissolved; add 1.0g of compound emulsifier 9968 and 2.0g of phenylethylphenol Oxyethylene ether, stir evenly; slowly add water dropwise to 100%, stir while adding dropwise to make it evenly mixed, it becomes a transparent or translucent uniform liquid, with a total mass of 10g, and the aphid alarm message with an active ingredient content of 20% can be prepared Primer analog CAU-1204 microemulsion.

[0042] According to the calculation that 15 grams of 20% CAU-1204 microemulsion is required to control peach aphid per mu of vegetable field, the field dosage is 3 grams per mu.

[0043] For field control, use 15 grams of 20% CAU-1204 microemulsion per mu of vegetable field, dilute 1000 times with water and spray. After 7 days, the population reduction rate of aphids can reach more than 80%, and it is safe to natural enemies and other non-ta...

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Abstract

The invention relates to a micro-emulsion with an aphid alarm pheromone analogue and a preparation method for the micro-emulsion. The micro-emulsion comprises an active compound of the aphid alarm pheromone analogue CAU-1204 and an auxiliary agent which comprises a solvent, a cosolvent, an emulsifier, an anti-freezing agent and water. In specific, the micro-emulsion comprises the following ingredients according to weight percentage: 1-25 percent of the CAU-1204 active compound, 5-30 percent of the organic solvent, 10-25 percent of the cosolvent, 15-30 percent of the emulsifier, 0-5 percent of the anti-freezing agent and the balance of water. The preparation method for the micro-emulsion comprises the following steps of: dissolving the CAU-1204 active compound into the solvent, and adding a certain amount of cosolvent; after the CAU-1204 active compound is completely dissolved, adding and stirring the emulsifier, the anti-freezing agent and the like to obtain homogeneous-phase transparent liquid; and continuously and slowly adding a certain amount of water, and fully stirring the ingredients at the same time, thus obtaining transparent uniform liquid, namely the micro-emulsion for the aphid alarm pheromone analogue CAU-1204. The micro-emulsion, which is a biomimetic synthesis reagent, is high in stability and environment-friendly; the preparation technology is simple; and the micro-emulsion can be independently used or combined with other chemical aphicides.

Description

technical field [0001] The invention relates to a pesticide microemulsion and a preparation method thereof, in particular to a novel aphid alarm pheromone analog microemulsion and a preparation method thereof. Background technique [0002] Aphids are one of the important pests on vegetables, wheat, cotton and other crops, causing serious harm to agricultural production. For a long time, people have been devoting themselves to the prevention and control of aphids, among which the use of chemical pesticides is one of the most important means at present. However, conventional pesticides, such as the organophosphorus pesticide Dimethoate and the pyrethroid insecticide Dixa, have significantly decreased their efficacy and increased their resistance, which has led to an increase in the amount and frequency of use, which has a negative impact on the environment and ecology. . [0003] Aphid alarm pheromone (trans)-β-farnesene (EBF) is a volatile liquid secreted from the abdominal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01P7/04A01P17/00A01N43/88
Inventor 杨新玲王灿凌云吴学民孙亮秦耀果雷鹏
Owner CHINA AGRI UNIV
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