Pueraria peduncularis extract for preventing and controlling plant disease

A plant disease control and extract technology, applied in the field of pesticides, can solve problems such as harmful beneficial organisms, ineffective control of diseases, pollution of the environment, etc., and achieve the effects of strong control effect, difficult drug resistance, and environmental friendliness.

Inactive Publication Date: 2008-08-06
YUNNAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the control effects of many existing fungicides are still not ideal, and many diseases have not been effectively controlled. Moreover, traditional chemical fungicides have many disadvantages such as polluting the environment, being harmful to beneficial organisms, and prone to drug resistance. adapt to social development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Collect bitter kudzu leaves, dry in the shade, dry in a drying oven at 10°C, and pulverize with a pulverizer. The obtained Eupatorium adenophorum powder was extracted with 1 volume of methanol at 10° C. by leaching for 30 days. Concentrate the filtered extract at 60°C to obtain the methanol extract of bitter kudzu leaves.

[0016] The bitter kudzu leaf methanol extract is prepared into a medicinal solution with water, at 2000g / hm 2 At the same dosage, the control effects on rice sheath blight, pear scab, wheat powdery mildew, peanut bacterial wilt, and tobacco mosaic disease were 62.3%, 83.5%, 80.2%, 85.6, and 77.3% after 10 days of application. .

Embodiment 2

[0018] Collect bitter kudzu root, dry in the shade, dry in a 50°C drying oven, and pulverize with a pulverizer. The obtained Eupatorium adenophorum powder was extracted with 5 times the volume of chloroform at 70°C by Soxhlet extraction for 5 days. Concentrate the filtered extract at 50°C to obtain the trichloromethane extract of Pueraria kudzu.

[0019] With water, the chloroform extract of bitter kudzu root is prepared into a medicinal liquid, at 2000g / hm 2 At the same dosage, the control effects on rice sheath blight, pear scab, wheat powdery mildew, peanut bacterial wilt, and tobacco mosaic disease were 73.5%, 79.5%, 76.4%, 83.7, and 72.6% after 10 days of application. .

Embodiment 3

[0021] Collect bitter kudzu stems, dry them in the shade, dry them in a drying oven at 100°C, and pulverize them with a pulverizer. The obtained Eupatorium adenophorum powder was extracted with 3 times the volume of ethanol at 25° C. by ultrasonic extraction for 1 minute. Concentrate the filtered extract at 60°C to obtain the ethanol extract of Pueraria kuerae.

[0022] The ethanol extract of bitter kudzu stem is prepared into liquid medicine with water, at 2000g / hm 2 At the same dosage, the control effects on rice sheath blight, pear scab, wheat powdery mildew, peanut bacterial wilt, and tobacco mosaic disease were 67.5%, 80.2%, 78.4%, 84.5, and 73.56% after 10 days of application. .

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Abstract

The invention relates to pueraria peduncularis extract used for preventing and treating plant diseases. Root, stem or leaf of the pueraria peduncularis are taken as raw materials and are dried, smashed and extracted to obtain the peduncularis used for preventing and treating the plant diseases. The pueraria peduncularis extract of the invention is used for preventing and treating the plant diseases with strong prevention and treatment effects and has effect on diversified plant diseases. As the extract adopts the pueraria peduncularis as the raw material, the extract can be degraded successfully in nature without residue and environment pollution; meanwhile, pathogenic bacteria are not easy to generate drug resistance so that the pueraria peduncularis extract is safe for the non-target organism and is environment friendly.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to the use of bitter kudzu extracts for plant disease control. Background technique [0002] With the development of society and the improvement of people's living standards, the planting structure has been greatly adjusted, and the planting methods have been greatly changed. The planting area of ​​vegetables and fruits has increased sharply; the planting method has changed from tall and sparse to short and dense; greenhouses have been widely used; the multiple cropping index has been greatly improved. All these provide favorable conditions for the occurrence and development of the disease. The occurrence of diseases is becoming more and more serious, seriously affecting the yield and quality of crops. At the same time, the control effects of many existing fungicides are still not ideal, and many diseases have not been effectively controlled. Moreover, traditional chemical fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01P3/00
Inventor 查友贵王静叶敏肖春
Owner YUNNAN AGRICULTURAL UNIVERSITY
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