Walnut green husk plant miticide and preparation method thereof

A technology of walnut green peel and acaricide, applied in the directions of botanical equipment and methods, acaricides, plant growth regulators, etc. Efficient, beneficial to industrial production, simple and easy to extract

Inactive Publication Date: 2008-02-13
BEIJING UNIV OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Herbivorous mites are important harmful organisms in agricultural production. They have a wide distribution range, many harmful hosts, a large area of ​​occurrence, and strong drug resistance. They cause serious losses to agricultural production and are difficult to control.

Method used

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  • Walnut green husk plant miticide and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Wash the green walnut skin, dry it in the shade in a ventilated place, or dry it at 20-45°C, grind it and pass it through a 40-60 mesh sieve. Put the pulverized plant powder into a multifunctional extraction tank, extract with petroleum ether (40-90° C.) or chloroform with 5 times the volume of the plant powder, and collect the chloroform or petroleum ether extract. Take 15kg of the extract, add 70kg of toluene or xylene into a mixing kettle with a stirrer and a thermometer, mix for 1.5 hours at 50°C, add 1kg of Tween (polysorbate), 0.5kg of 6-vinyldecanal, Sodium lauryl sulfate 2kg, benzylphenol polyoxyethylene ether 0.5kg, mix uniformly, obtain walnut green bark extract 16.9% acaricide emulsifiable concentrate.

Embodiment 2

[0064] Wash the green walnut skin, dry it in the shade in a ventilated place, or dry it at 45°C, grind it and pass it through a 60-mesh sieve. Put the pulverized plant powder into a multifunctional extraction tank, extract with 4 times the volume of chloroform, and collect the chloroform extract. Take 10kg of the extract, add 60kg of toluene or xylene into a mixing kettle with a stirrer and a thermometer, mix for 3 hours at 60°C, add 1kg of polyethylene glycol, 1kg of tea saponin, p-octylphenol polyoxygen Vinyl ether 3kg, azone 1kg, mix uniformly, obtain walnut green husk extract 13.2% acaricide emulsifiable concentrate.

Embodiment 3

[0065] Embodiment 3: Preparation of walnut green husk extract

[0066] Adopt multifunctional extracting tank, the volume ratio of the powder of walnut green skin and organic solvent ethanol is 1: 2, 1: 3 or 1: 4, soak in warm or cold for 8, 10, 12, 18 or 24 hours, filter, dry, Get walnut green bark extract.

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Abstract

The present invention relates to a plant acaricide applied to controlling the mite on the economic crops such as the fruit trees and the vegetables and a preparation method and a usage of the plant acaricide, which is made by adding the surfactant, the emulsifying agent, the penetration agent and the synergist into the effective part of walnut green hull of Juglans regia L.. The present invention is characterized in that the plant acaricide has high efficiency, low toxicity and fewer residues and is friendly to the environment.

Description

technical field [0001] The invention relates to a pesticide and a preparation method thereof, in particular to an acaricide and a preparation method thereof. Background technique [0002] Herbivorous mites are important pests in agricultural production. They have a wide distribution range, many harmful hosts, a large area of ​​occurrence, and strong drug resistance. They cause serious losses to agricultural production and are difficult to control. The negative effects brought by chemical control are well known, so it is imminent to research and develop pollution-free botanical acaricides. Contents of the invention [0003] The invention adopts a chemical extraction method to extract the effective part of the walnut green peel which has a lethal effect on mites from the green walnut peel and prepare the botanical acaricide. [0004] The effective part of walnut green peel of the present invention can be walnut green peel extract or walnut green peel extract, and the prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01P7/02A01N65/08
Inventor 师光禄王有年曹挥
Owner BEIJING UNIV OF AGRI
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