Plant source bacteriocide for agriculture

An agricultural fungicide and plant-sourced technology, applied in the direction of fungicides, plant growth regulators, biocides, etc., can solve the problems of resistant varieties and chemical pesticide use in production restrictions, achieve broad application and development prospects, and rich sources Effect

Inactive Publication Date: 2006-10-11
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the use of resistant varieties and the use of chemical pesticides are still effective measures to prevent and control plant diseases. The toxicity of pesticides and the resistance of pathogenic bacteria, resistant varieties and the use of chemical pesticides are subject to certain re

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Plant dry weight 25 grams, water 100ml, extract with a Soxhlet extractor for 12 hours, and concentrate through a rotary evaporator to obtain a plant crude extract of 2.5 to 7.5, which is used as the original drug for future use.

Embodiment 2

[0017] 25 grams of plant dry weight, 100 ml of industrial ethanol, extracted for 12 hours with a Soxhlet extractor, concentrated by a rotary evaporator to obtain 2.5 to 7.5 of the crude plant extract, which is used as the original drug for future use.

Embodiment 3

[0019] Dissolve the total extract with dimethyl sulfoxide, take 1 part of the solution and add it to the culture plate, then add 80 parts of the culture solution containing spores, mix well (total extract concentration mass volume ratio 200mg / l), to contain 1 : The culture solution of 80 dimethyl sulfoxide and the treatment without solvent were used as controls. After the treatment, they were placed in an incubator for cultivation. After the control had fully germinated, the conditions of spore germination and hyphal growth were checked under a microscope.

[0020] Psoralen crude extract

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PUM

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Abstract

The invention relates to an agricultural bactericidal agent, especially relating to an agricultural bactericidal agent prepared with extract of psoralen to prevent rice blast for rice, late blight for tomato and potato, chilli epidemic disease and gray mold for cucumber and so on. The total extract of psoralen can be got by chemical extracting method, for example, extracting with ethanol of 95%, or methanol or water or organic solvent from psoralen seed powder, then condensing and getting the total extract. Dissolving the total extract in water or acetone or dimethyl sulfoxide or organic solvent to prepare mother liquid. The bactericidal agent is characterized by high efficiency, low toxicity and residual and hard for drug resistance.

Description

technical field [0001] The present invention relates to a plant-sourced agricultural fungicide, in particular to an extract of psoraleae for preventing and treating rice blast, tomato late blight, potato late blight, pepper phytophthora, cucumber gray mold and other common fungicides. Botanical agricultural fungicides for plant diseases. Background technique [0002] Rice blast (Blast Fungus) is one of the most serious rice diseases in the world's rice fields. The disease can cause damage to rice all year round. Its damage spreads to all parts of rice. Leaf pillow blast, node rice blast, ear neck blast, branch blast and grain blast, etc. Generally, rice production is reduced by 10% to 20%. Taking my country as an example, since the 1990s, the annual occurrence area of ​​the disease has been more than 3.8 million hm2, and the annual loss of rice has reached hundreds of millions of kilograms. [0003] Tomato late blight is a devastating vegetable disease in the world. The U...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01P3/00A01N65/20
Inventor 关丽杰邵红邵双潘波张弘原静雷晓燕李海燕
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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