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Use of walnut plant extract as pesticide in preventing and controlling diamondback moth

A plant extract, Juglans technology, applied in the direction of application, insecticide, plant growth regulator, etc., can solve the problems of unspecified insecticidal active substances, no juglone killing diamondback moth, etc., to achieve the benefit of The effect of environmental protection

Inactive Publication Date: 2007-05-09
武汉绿世纪生物工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are only sporadic reports on the use of water extracts of walnut leaves, fruit peels, and branch bark to kill aphids and willow worms, and the use of smoke burned from walnut leaves to prevent harmful mites in bee colonies, but all reports do not explain the insecticide contained therein. What is the active substance, and there have been no reports of juglone as an insecticide used to kill diamondback moths

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Embodiment one, the preparation of juglone mother liquor (0.4% and 4.0% juglone alcohol solution)

[0080] Take 600kg of walnut catalpa leaves, peels, and bark dry powder (40-60 mesh), add 3000L of water, soak, adjust the pH to 5.0, overnight, put it into a stainless steel column, soak for 8 hours, and then slowly rinse with ethanol with a pH of 5.0 . Stop washing until the concentration of juglone in the eluent is <0.001%. Collect eluent (ethanol and aqueous solution of juglone) 4500L. Concentrate the rinse solution to a paste in a vacuum concentrator. Take out the paste, dissolve repeatedly with methanol in a dissolving tank, filter the solution to remove slag, leave the clear liquid, and then concentrate the clear liquid to obtain 50 kg of concentrated liquid, which is the mother liquor (juglone content 0.398%). It was concentrated again to become a 4.0% mother liquor.

Embodiment 2

[0081] Embodiment two, the preparation of juglone insecticidal pesticide single dose (0.3% juglone emulsifiable concentrate preparation)

[0082] Take 40kg of 0.4% mother liquor, add Tx-10 3kg, Nongru 0203 2kg, fast penetrant T 4kg, sodium benzoate 0.8kg and stir well, finally add xylene 1000ml, mix well again. Obtain about 49kg of juglone insecticide single-dose emulsifiable concentrate at last. The content of juglone in the detection product is 0.30%. This kind of test product is diluted 500 times and 300 times respectively to prevent and control diamondback moth in the field, and the control effects in 72 hours are 80% and 97% respectively.

Embodiment 3 2

[0083] Embodiment three, the preparation of 2.0% ajue emulsifiable oil (0.2% juglone+1.8% abamectin)

[0084] Get Abamectin crystal 1.8kg (according to Abamectin B 1a Component percentage calculation), dissolved with 25L methanol, then added 52.6 liters of the above-mentioned 0.4% juglone mother liquor, and stirred evenly. Add 12 liters of special emulsifier for abamectin and 2 kilograms of thioketone. Finally make up to 100 kg with xylene, fully stir evenly. This product is diluted 2000 times and 3000 times to prevent and control diamondback moth in the field, and the control effect within 72 hours is 92% and 84% respectively.

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PUM

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Abstract

The present invention relates to application of juglans plant extract as pesticide in preventing and controlling diamondback moth. The leaf, fruit coating and branch bark of juglans plant are used as main material to prepare juglone liquid, and the juglone liquid is then compounded into pesticide alone or together with other farm pesticide for preventing and controlling diamondback moth. The present invention has high pesticidal activity on diamondback moth, and compared with other chemical pesticide, the botanical pesticide is more environmental friendly.

Description

【Technical field】 [0001] The present invention relates to the application of Juglans plant extract as insecticidal pesticide in controlling pests, in particular to the application of Juglans plant extract as insecticidal pesticide in controlling diamondback moth. 【Background technique】 [0002] There are 18 species of Juglans, among which there are 4 species, 1 variant and 2 introduced cultivars in China. Nuts, branches, leaves, and peels of Juglans can be used as medicine and food, and have certain economic value. The chemical substances in walnut leaves, peels, and branches have been studied for more than 100 years. In 1885, it was determined that the leaves, peels, and branches of Juglans plants contained 5-hydroxy-1,4-naphthoquinone, commonly known as juglone. Later, it was found that these plants contained compounds such as hyperoside, lentoside, juglandin, α-hydrogenated juglone-4-β-D-glucoside and the like. The content of juglone in the above-mentioned compounds is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/00A01P7/04A01N65/08
Inventor 林开春曾水云汪威董岑洲
Owner 武汉绿世纪生物工程有限责任公司
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