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Biological agent for controlling sclerotinia blight of Chinese cabbage

A technology of biological agents and sclerotinia, applied in the direction of biocides, biocides, fungicides, etc., can solve the problems of pesticide residues and harm to human health, achieve good control effect, overcome the effect of pesticide residues and harm to human health

Active Publication Date: 2017-08-04
YANBIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of pesticide residues and human health hazards caused by chemical control in the process of preventing and treating Sclerotinia sclerotiorum of cabbage, the present invention selects food-grade raw materials to prepare a non-toxic and residue-free biological agent, which has the effect on Sclerotinia sclerotiorum. Significant antibacterial effect, can effectively control cabbage Sclerotinia and the diseases caused by it

Method used

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  • Biological agent for controlling sclerotinia blight of Chinese cabbage
  • Biological agent for controlling sclerotinia blight of Chinese cabbage
  • Biological agent for controlling sclerotinia blight of Chinese cabbage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The rice straw was crushed to 70 mesh and then pyrolyzed at 500°C for 3s to obtain bio-oil; the obtained bio-oil and water were stirred and mixed at a volume ratio of 1:2, and after standing still, the upper aqueous phase was distilled at atmospheric pressure and collected The distillate at 100°C is straw pyrolysis liquid.

[0055] The obtained straw pyrolysis solution was diluted 70 times, and mixed with 1.4 g / L chitosan aqueous solution according to 33.3:66.6 (V / V) to obtain a biological agent for preventing and treating cabbage sclerotinia.

Embodiment 2

[0057] Corn stalks were crushed to 75 mesh and then pyrolyzed at 550°C for 5 seconds to obtain bio-oil; the obtained bio-oil and water were stirred and mixed at a volume ratio of 1:1, and after standing, the upper aqueous phase was subjected to atmospheric distillation. Collect the distillate at 105°C, which is the straw pyrolysis solution.

[0058] The obtained straw pyrolysis solution is diluted 70 times, and mixed with 10 g / L chitosan aqueous solution according to 50:50 (V / V) to obtain a biological agent for preventing and treating cabbage sclerotinia.

Embodiment 3

[0060] The soybean straw was crushed to 80 mesh and then pyrolyzed at 450°C for 4 seconds to obtain bio-oil; the obtained bio-oil and water were stirred and mixed at a volume ratio of 1:2, and after standing still, the upper aqueous phase was subjected to atmospheric distillation. Collect the distillate at 120°C, which is the straw pyrolysis solution.

[0061] The obtained straw pyrolysis solution was diluted 70 times, and mixed with 20 g / L chitosan aqueous solution according to 66.6:33.3 (V / V) to obtain a biological agent for preventing and treating cabbage sclerotinia.

[0062] Table 6 Antibacterial effect of straw pyrolysis solution and chitosan compound on Sclerotinia sclerotiorum

[0063]

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Abstract

The invention relates to the technical field of bactericides, and especially relates to a biological agent for controlling sclerotinia blight of Chinese cabbage. The biological agent comprises, by volume, 33.3-66.7 parts of a straw pyrolysis liquid and 66.7-33.3 parts of chitosan, or comprises, by volume, 33.3-75 parts of the straw pyrolysis liquid and 66.7-25 parts of a Bacillus spp fermentation broth. The biological agent has a significant bacteriostatic effect on the sclerotinia blight of Chinese cabbage, can effectively control the sclerotinia blight of Chinese cabbage and other diseases caused by the sclerotinia blight of Chinese cabbage, and is a nontoxic and non-residual biological agent.

Description

technical field [0001] The invention relates to the technical field of fungicides, in particular to a biological agent for preventing and treating cabbage sclerotinia. Background technique [0002] With the warming of the climate, when the northern cabbage cultivation area encounters high temperature and humidity, serious diseases occur, and cabbage sclerotinia is one of them. When Sclerotinia infects adult cabbage plants, water-soaked light brown sunken lesions often appear on the stems and petioles on the ground surface, and the lesions on the leaves are not sunken, causing leaf balls or stem bases to rot, white cottony mycelia and scattered Raw black rat feces-like sclerotia, no odor at the rotten place. When the seedlings get sick, water-soaked lesions are produced at the base of the stem near the ground, which quickly rot or dampen, and do not produce obvious white mold. When the seed plants get sick, a layer of white cotton-like mycelium will appear on the surface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01N43/16A01N63/02A01P3/00
CPCA01N43/16A01N63/10A01N65/00A01N2300/00
Inventor 李范洙张先李铉军李敏崔晓宇付长雪刘芳芳
Owner YANBIAN UNIV
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