Application of active polysaccharides in corn top rot control

A technology for corn top rot and active polysaccharide, applied in the application, chemical for biological control, biocide and other directions, can solve the problem that there is no effective medicine for preventing corn top rot, lack of systematic research and effective control measures, and there have been no relevant reports at home and abroad to achieve the effects of slowing down corn allergy, achieving significant control effects, and preventing and controlling the occurrence and development of

Active Publication Date: 2015-09-09
郭红甫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few studies on corn top rot at home and abroad, lack of systematic research and effective control measures, the pathogenesis is unknown, and the control is difficult. The bactericides, fungicides, or both Mixed and treated symptomatically, there was no obvious control effect, and there was no report on the effective control of corn top rot.
Through many years of research on the pathogenesis, the inventor classified corn top rot from a pathogenic disease to an environmental stress disease for the first time in China, and by inducing basic resistance, improving disease resistance and environmental stress resistance of diseased plants, slowing down and eliminating The allergic reaction caused by pathogenic bacteria promotes the compatible symbiosis between pathogenic bacteria and corn, and prevents and controls the occurrence and development of corn top rot.

Method used

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  • Application of active polysaccharides in corn top rot control
  • Application of active polysaccharides in corn top rot control
  • Application of active polysaccharides in corn top rot control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 chitosan oligosaccharide

[0025] Dilute 90% chitosan oligosaccharide by 4500 times to 90,000 times to prepare a solution with a concentration of chitosan oligosaccharide of 10-200ppm, spray on leaves to prevent corn top rot.

Embodiment 2

[0026] Example 2 Dextran

[0027] The 95% dextran is diluted 20,000 times to 950,000 times to prepare a solution with a dextran concentration of 1.0-47.5ppm, which is sprayed on leaves to prevent corn top rot.

Embodiment 3

[0028] Embodiment 3 chitosan oligosaccharide + dextran

[0029] Weigh 95.5 g of 90% oligochitosaccharide and 4.5 g of 95% dextran, mix them evenly, and mix them into a compound preparation with an active polysaccharide content of 90.2% (the ratio of chitosan and dextran is 20:1). The mixed agent is diluted 2500 times to 50,000 times, and prepared into a solution with an active polysaccharide concentration of 18.0-361ppm (chitooligosaccharide+dextran=20+1), which is sprayed on the leaves to prevent corn top rot.

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Abstract

The invention relates to application of active polysaccharides in corn top rot control. Active polysaccharide 1.0-361ppm is used dependently foliar spray, combined with soluble salt containing plant nutrition in use or combined with pesticide in use, and is evident in corn top rot control effect. The active polysaccharide comprises chitosan oligosaccharide and glucosan and has evident resistance induction activity on crops, environmental stress resistance is enhanced by inducing basic resistance, and occurrence and development of corn top rot are prevented and controlled.

Description

technical field [0001] The invention relates to a new application of active polysaccharides, in particular to the application of active polysaccharides in preventing and treating corn top rot. Background technique [0002] Corn top rot is a new disease of corn, which can be divided into bacterial infection, fungal infection and mixed infection of fungi and bacteria in terms of symptoms. Symptoms of maize top rot are complex and diverse, and can infect and develop diseases throughout the entire growth period of maize. At the seedling stage, the plants grow slowly, the edges of the leaves lose chlorosis, yellow streaks appear, the leaves are deformed, shrunk or twisted, and the seriously diseased plants wither or die; in the middle and late stages of growth, the leaves show that the bases are rotten, only the main veins remain, and the middle and upper parts are intact but Many deformities, the top of the epigenetic new leaves rot, resulting in short leaves, dead or incomplet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01P1/00A01P3/00C05G3/00
Inventor 郭红甫朱荷琴李政道曹筠慧孙化田任应党高洪泽孙刚强王留梅薛中立冯自力王向平刘红君胡玉香陈禄廷刘晓帆郭慧周娟丽赵平张晓颖梁冰
Owner 郭红甫
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