Application of ginkgo as plant pesticide

The technology of a plant insecticide and ginkgo extract is applied in the application field of ginkgo as a plant insecticide, and can solve problems such as undiscovered

Inactive Publication Date: 2003-02-26
INST OF PLANT PROTECTION ZHEJIANG PROV ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the research and report as insecticidal plants are few so far, so far have not found to have with Ginkgo biloba as main raw material, the report of making botanical insecticide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Embodiment 1: according to the following proportioning, through certain processing, emulsifiable concentrate is made:

[0107] Ginkgo biloba extract 10~60%

[0108] Solvent 30~75%

[0109] Emulsifier 5~25%

[0110] Other additives such as hyperosmotic agents, etc. 5-10%

[0111] The solvent in the emulsifiable concentrate is selected from one or more of xylene, methanol, ethanol, ethyl acetate, etc., and the emulsifier is selected from octylphenol polyvinyl ether, styrene phenol polyoxyethylene polyoxypropylene ether, dodecylbenzene One or more of calcium sulfonate, stearyl polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether, etc.

[0112] The production method of emulsifiable oil: first, crush ginkgo biloba leaves or outer skin into coarse pulverization of less than 5mm, then extract with different solvents, concentrate the extract to a certain concentration under reduced pressure, and then mix it with emulsifiers, solvents and other additives, etc. ...

Embodiment 2

[0113] Embodiment 2: according to following proportioning, through certain processing, make water emulsion:

[0114] Ginkgo biloba extract 10~40%

[0115] Water 35~70%

[0116] Solvent 5~25%

[0117] Emulsifier 5~20%

[0118] Co-emulsifier 1~5%

[0119] The solvent in the aqueous emulsion is selected from one or more of xylene, methanol, ethanol, ethyl acetate, etc.; the emulsifier is selected from alkyl polyglycol ether, alkylphenyl polyethylene glycol ether, polyoxyethylene sorbitol, etc. One or more of sugar alcohol anhydride esters, polyoxyethylene fatty acid esters, etc.; co-emulsifiers are alkanols such as butanol, isobutanol, dodecanol-1, stearyl alcohol-1, etc. one or several.

[0120] The manufacturing method of the aqueous emulsion: add ginkgo extract, solvent, emulsifier, and co-emulsifier together in a certain proportion, and stir at a high speed at room temperature.

Embodiment 3

[0121] Embodiment 3: according to following proportioning, through certain processing, make microemulsion:

[0122] Ginkgo biloba extract 10~50%

[0123] Water 40~60%

[0124] Emulsifier 10~25%

[0125] The emulsifier used in the microemulsion is one or more of styrene phenol polyoxyethylene ether, polyethylene styrene phenol ether oleate, nonylphenol polyoxyethylene ether, biphenol polyoxyethylene ether, etc.

[0126] The manufacturing method of the microemulsion: first dissolve the emulsifier in water, add ginkgo extract dropwise therein under stirring, stir at a constant temperature of 40-65° C. for 12 hours, and then cool to room temperature.

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PUM

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Abstract

In the present invention ginkgo leaf, ginkgo epicarp and other parts as raw material are prepared to plant pesticide via drying, crushing, solvent extraction, effective component separation and other steps. The said pesticide is in oil emulsion, water emulsion, microemulsion, wettable powder and other forms. It can be used in killing various pests, including homoptera and lepidoptera pests, such as cotton leafworm, rice stem borer, cabbage moth, plant hopper, etc. and has obvious pesticidal effect, high selectivity, low toxicity, low residue, less drug resistance, etc.

Description

technical field [0001] The invention relates to the application of ginkgo, belongs to the field of pesticide processing, and in particular relates to the application of ginkgo as a plant pesticide. Background technique [0002] Ginkgo biloba L. is a plant of the genus Ginkgo in the Ginkgo family. It is a unique tree species in my country and is known as a "living fossil". It is widely planted in various places, especially in East China and Southwest China. It has been widely introduced all over the world. However, China's ginkgo resources account for about 70% of the world's total. Ginkgo biloba has the value of medicine, health care and nutrition, so there are many studies. When researching as medicine and health care products, etc., the extraction of active ingredients and product development are quite mature. However, there are few studies and reports on insecticidal plants so far, and there has been no report of using ginkgo as the main raw material to manufacture bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/06A01P7/00
Inventor 俞晓平吕仲贤陈建明郑许松徐红星
Owner INST OF PLANT PROTECTION ZHEJIANG PROV ACAD OF AGRI SCI
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