Wikstroemia chamedaphne Meissn.vegetative acaricides and method for making same

A technology of genkwa genkwa and acaricide, which is applied in the field of acaricide and its preparation, can solve the problems of many harmful hosts and losses, and achieve the effects of high chemical pesticide efficiency, benefit to industrial production, and significant acaricidal effect

Inactive Publication Date: 2007-12-05
BEIJING UNIV OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It damages many hosts a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0060] Example 1:

[0061] Wash the Capsules, dry in the shade in a ventilated place, or dry at 30°C, grind and pass through a 40-mesh sieve. Put the crushed plant powder into a multifunctional extraction tank, repeatedly extract with petroleum ether (30-90°C), collect the chloroform or petroleum ether extraction phase, and concentrate under reduced pressure to an ointment (relative density is 0.9127g / cm2). 3 ). Get extract 15kg and add toluene or xylene 50kg and add in the mixing kettle with stirrer and thermometer, at 40 ℃, mix 1.5 hours, add Tween 80 (polysorbate) 3kg, synergistic ester 2kg, dodecane 5 kg of sodium bisulfate and 1.5 kg of benzyl phenol polyoxyethylene ether were mixed uniformly to obtain 19.6% acaricide emulsifiable concentrate of C.

Example Embodiment

[0062] Example 2:

[0063] Wash the Capsules, dry in the shade in a ventilated place, or dry at 30°C, grind and pass through a 40-mesh sieve. Put the crushed plant powder into the multifunctional extraction tank, repeatedly extract with chloroform, then extract with water and petroleum ether, collect the petroleum ether extraction phase, and concentrate under reduced pressure to an ointment (relative density is 0.9653g / cm2). 3 ). Get extract 10kg part and add solvent toluene or xylene 50kg and add in the mixing kettle with stirrer and thermometer, at 40 ℃, mix 3 hours, add Tween 80 (polysorbate) 4kg, 6-vinyl decanal 3kg, 5kg of sodium lauryl sulfate, and 1.5kg of azone were mixed uniformly to obtain 13.6% acaricide EC of Capsule Flos Extract.

Example Embodiment

[0064] Example 3:

[0065] Wash the Capsules, dry in the shade in a ventilated place, or dry at 30°C, grind and pass through a 40-mesh sieve. The crushed plant powder is put into a multifunctional extraction tank, extracted with methanol, and concentrated under reduced pressure. Get extract 8kg and add solvent methanol or ethanol 50kg and add in the mixing kettle with stirrer and thermometer, at 40 DEG C, mix 3 hours, add polyethylene glycol 3kg, 6-vinyl decanal 5kg, N-dodecane 5 kg of alkyl dimethylamine and 1 kg of azone were mixed uniformly to obtain 12% acaricide EC of Capsule Fructus.

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Abstract

The present invention relates to one kind of botanic miticide for preventing and killing mites in fruit tree, vegetable and economic crops and its preparation process and application. The botanic miticide is prepared with the effective part of Wikstroemia chamedaphne Meissn, surfactant, emulsifier, penetrant, synergist, etc. It has the features of high effect, low toxicity, lower residue and environment friendship.

Description

technical field [0001] The invention relates to a pesticide and a preparation method thereof. In particular, it relates to an acaricide and a preparation method thereof. Background technique [0002] Herbivorous mites are global pests with the characteristics of small size, rapid reproduction, strong adaptability and easy resistance to pesticides, and spider mites are the main pests of this group. There are many hosts that are harmed, and the losses caused are serious. According to incomplete statistics, the annual cost of acaricides in my country is as high as several billion yuan, and the cost of chemical control of Tetranychus hawthorn on fruit trees in the north alone reaches several billion yuan. The damage caused by mites to crops continues unabated. The main reason is the rapid development of resistance to existing acaricides. It can be seen that inventing a new type of biopesticide with high efficiency, low toxicity, low residue, and harmony with the environment ...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01N25/30A01P7/02A01N65/08
Inventor 师光禄曹挥王有年
Owner BEIJING UNIV OF AGRI
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