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New use of chinaberry fruit prepn in preventing and confrolling spot blight of gentian

A technology for neem and leaf blight, which is applied in the fields of plant growth regulators, botanical equipment and methods, and chemicals used for biological control, etc. Problems affecting the quality of Chinese herbal medicines

Inactive Publication Date: 2007-05-23
王喜军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing agents for preventing and treating plant gentian spot blight are chemical synthetic drugs. These pesticides are widely used on crops and other plants. Although they eliminate the harm of plant diseases, they also pollute the environment. They are also used in medicinal Pesticide residues are left on the medicinal parts of plants, which affects the quality of Chinese herbal medicines and affects the competitiveness of Chinese herbal medicines and Chinese patent medicines in the international market

Method used

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  • New use of chinaberry fruit prepn in preventing and confrolling spot blight of gentian
  • New use of chinaberry fruit prepn in preventing and confrolling spot blight of gentian

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Experimental program
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specific Embodiment approach 1

[0004] Specific embodiment one: this embodiment is realized by the following steps: use toosendan preparation to prevent and treat plant gentian blight; Dry it down, crush it to below 20 mesh, then add ethanol, the weight-to-volume ratio of Toosendan and ethanol is 1 g: 5-6 milliliters, reflux the mixed solution of Toosendan and ethanol twice, each time for 2 hours , filter out impurities, concentrate the ethanol extract of Toosendan under reduced pressure until each milliliter of extract contains 0.8-1.2 grams of Toosendan extract, and then refrigerate it at 0-4°C for later use; The ethanol extract of Toosendan is added with water to prepare 0.18-0.22 grams of Toosendan extract per milliliter of diluted solution. Tween is added during the preparation process, and the amount of Tween added is 0.9-1.1% of the volume of the diluted solution. The Tween used is Tween 80. The purpose of adding Tween is to increase the solubility of the mixed solution in water. When the Toosendan is...

specific Embodiment approach 2

[0005] Specific embodiment two: the difference between this embodiment and embodiment one is: in the process of preparing the diluent, in order to make the diluent have a better control effect, it can be added to the diluent with a weight-to-volume ratio of 1 ~2 grams: 100 milliliters of washing powder, which can reduce the surface tension of the diluent, so that the medicinal solution can be fully spread on the surface of the plant leaves.

specific Embodiment approach 3

[0006] Specific embodiment three: the difference between this embodiment and embodiment one is: the drying temperature of Toosendan is 40 ℃, the weight-to-volume ratio of Toosendan and ethanol is 1 gram: 5 milliliters, and the ethanol extraction of Toosendan The solution is concentrated under reduced pressure to 0.8 g / ml. When in use, the ethanol extract of Toosendan after concentration is added with water to make every milliliter of dilution contain 0.18 grams of Toosendan extract, and the addition of Tween is 0.9% of the volume of the dilution .

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Abstract

The present invention discloses the use of chinaberry fruit in preventing and controlling spot blight of gentian. Chinaberry fruit is stoved at 40-60 deg.c, crushed to below 20 meshes and twice refluxed in ethanol for 2 hr each, and the mixed liquid is filtered to eliminate impurity, decompression concentrated to the density of 0.8-1.2 g / ml and cold stored at 0-4 deg.c. Before use, the mixed solution is added with water to obtain diluted solution with chinaberry fruit in 0.18-0.22 g / ml, and Tween in the amount of 0.9-1.1 % of the volume of the diluted solution is added. The chinaberry fruit preparation is used in preventing and controlling sport blight of gentian, has no toxicity, no environmental pollution and no residue, and is suitable for producing green Chinese medicinal material and green food material.

Description

technical field [0001] The invention relates to the use of toosendan for preventing and treating plant gentian spot blight. Background technique [0002] Most of the existing agents for preventing and treating plant gentian spot blight are chemical synthetic drugs. These pesticides are widely used on crops and other plants. Although they eliminate the harm of plant diseases, they also pollute the environment. They are also used in medicinal Pesticide residues are left on the medicinal parts of plants, which affects the quality of Chinese herbal medicines and affects the competitiveness of Chinese herbal medicines and Chinese patent medicines in the international market. Contents of the invention [0003] The object of the invention is to use the toosendan preparation to prevent and treat plant gentian blight so as to reduce environmental pollution and plant pesticide residues. The technical scheme of the present invention is: use the toosendan preparation to prevent and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/00A01P3/00A01N65/26
Inventor 王喜军孙晖孙海峰周磊
Owner 王喜军