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Plant agent for killing snails, prepn. method and use method thereof

A snail agent and plant technology, applied in the field of pesticides, can solve the problems of difficulty in large-scale and long-term use, high price, toxicity and the like, and achieve the effects of simple preparation process, low cost and convenient use.

Inactive Publication Date: 2006-06-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium pentachlorophenate is an earlier molluscicide used in my country. It is effective in killing molluscs, but it is highly toxic and harmful to humans, poultry and aquatic animals, and its use has been gradually banned at present.
Bromoacetamide and niclosamide molluscicide recommended by the World Health Organization are highly toxic to non-target organisms such as fish and are expensive, so it is difficult to use in large areas and for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Weigh 100 g of dried Ginkgo biloba testa and pulverize it, ultrasonically extract 5 times the amount of petroleum ether three times, each time for 2 hours, combine the extracts, filter under reduced pressure, and evaporate the solvent to obtain a petroleum ether extract. Dissolve the extract in dimethylformamide to prepare a medicinal solution and add it to the living water of Oncomelania snails, wherein the content of dimethylformamide does not exceed 0.5mL / 100mL of water.

Embodiment 2

[0029] Example 2: Weigh 100 g of dried Ginkgo biloba testa and pulverize it, extract 5 times the amount of ethyl acetate under reflux at 75° C. for three times, each time for 2 hours, combine the extracts, filter under reduced pressure, and evaporate the solvent to form an ethyl acetate extract. The extract is dissolved in dimethylformamide to prepare a medicinal solution, which is added to the living water of Oncomelania snails, wherein the content of dimethylformamide does not exceed 0.5mL / 100mL of water.

Embodiment 3

[0030] Example 3: Weigh 100 g of dried Ginkgo biloba exocarp and pulverize it, extract 5 times the amount of ethanol under reflux at 70°C for three times, each time for 3 hours, combine the extracts, filter under reduced pressure, and evaporate the solvent to form an ethanol extract. The extract is dissolved in dimethylformamide to prepare a medicinal solution, which is added to the living water of Oncomelania snails, wherein the content of dimethylformamide does not exceed 0.5mL / 100mL of water.

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PUM

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Abstract

A vegetative insecticide for killing on comelania is the extract of the gingko exotesta in petroleum ether, or ethyl acetate, or alcohol, which is prepared through pulverizing and extracting.

Description

technical field [0001] The invention relates to pesticides, in particular to a plant molluscicide and its preparation method and use method. Background technique [0002] Schistosomiasis is a disease caused by humans or mammals infected with schistosomiasis. It is a severe acute infectious disease. If it is not effectively controlled, patients will gradually lose their ability to work and even endanger their lives. [0003] Currently, there are about 810,000 schistosomiasis patients in China. According to statistics from the health department, the areas where schistosomiasis has not been controlled in China are mainly concentrated in 110 counties (cities, districts) in the 7 provinces of Hunan, Hubei, Jiangxi, Anhui, Jiangsu, Sichuan, and Yunnan in the Yangtze River Basin. The population is about 60 million. The severely affected areas are mainly the Jianghan Plain, the Dongting Lake area, the Poyang Lake area, the river (lake, island) beach area along the Yangtze River, a...

Claims

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Application Information

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IPC IPC(8): A01N65/06A01P9/00
CPCY02A50/30
Inventor 杨小明陈盛霞陈钧张蓉仙谢吉民
Owner JIANGSU UNIV
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