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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 and causes serious losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Wash Daphne genifera, dry in the shade in a ventilated place, or air-dry at 30°C, grind and pass through a 40-mesh sieve. Put the pulverized plant powder into a multi-functional extraction tank, repeatedly extract with petroleum ether (30-90°C), collect the chloroform or petroleum ether extract phase, concentrate under reduced pressure to an ointment (relative density is 0.9127g / cm 3 ). Take 15kg of the extract, add 50kg of toluene or xylene into a mixing kettle with a stirrer and a thermometer, mix for 1.5 hours at 40°C, add 3kg of Tween 80 (polysorbate), 2kg of synergistic ester, dodecane Sodium sulfate 5kg, benzylphenol polyoxyethylene ether 1.5kg, mix uniformly, obtain the 19.6% acaricide emulsifiable concentrate of Genkwa genkwa extract.

Embodiment 2

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

Embodiment 3

[0065] Wash Daphne genifera, dry in the shade in a ventilated place, or air-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. Take 8kg of the extract, add 50kg of solvent methanol or ethanol into a mixing tank with a stirrer and a thermometer, mix for 3 hours at 40°C, add 3kg of polyethylene glycol, 5kg of 6-vinyldecanal, and N-dodecyl Alkyl dimethylamine 5 kg, azone 1 kg, mixed evenly, obtained genkwa genkwa 12% acaricide emulsifiable concentrate.

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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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