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Application and method of chitosan oligosaccharide in resisting watermelon fusarium wilt

A watermelon wilt and chitosan oligosaccharide technology, applied in the field of agricultural chemistry, can solve the problems of inability to prevent and control watermelon wilt, improper concentration of watermelon wilt, etc., and achieve the effect of improving the effect

Active Publication Date: 2012-03-28
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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Problems solved by technology

[0003] It has been reported in the prior art that oligochitosan is used to prevent and treat watermelon wilt, mainly utilizing chitosan to treat watermelon seedlings before and after watermelon transplanting to prevent and control watermelon wilt, but the concentration of its prevention and treatment of watermelon wilt is not suitable , the application method and its application period cannot form an effective control of watermelon wilt

Method used

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  • Application and method of chitosan oligosaccharide in resisting watermelon fusarium wilt
  • Application and method of chitosan oligosaccharide in resisting watermelon fusarium wilt
  • Application and method of chitosan oligosaccharide in resisting watermelon fusarium wilt

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Embodiment 1

[0025] The 5wt% chitosan oligosaccharide solution is diluted with water to the corresponding application concentration, the concentration is calculated according to the weight percent concentration, and is calculated in ppm (parts per million) concentration in the result record, and 50ppm represents the weight percent in the result record below The concentration is 0.005%. Water treatment was used as a control. The watermelon seeds and watermelon plants are treated in stages with the diluted solution according to requirements, and the seed treatment is soaking of the seeds, and the soaking time is 24 hours. The treatment mode of other stages is spraying treatment of chitosan oligosaccharide aqueous solution, and the interval time of spraying treatment is 15 days. Each treatment is observed and detected through 3 test fields (667 square meters). The samples of the treated seeds are counted when the crops grow into 4 leaves after germination, and the statistics of the treatment...

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Abstract

The invention relates to an application and method of chitosan oligosaccharide in resisting watermelon fusarium wilt. The invention specifically provides a pesticide composition used for resisting watermelon fusarium wilt. The pesticide composition contains chitosan oligosaccharide, wherein the chitosan oligosaccharide accounts for 0.01-0.02% or 0.004-0.0075% of the pesticide composition by weight. The invention also provides application of the pesticide composition containing chitosan oligosaccharide in resisting watermelon fusarium wilt. The application is characterized in that the weight percent of chitosan oligosaccharide in the composition containing chitosan oligosaccharide is 0.004-0.03%. The pesticide composition containing chitosan oligosaccharide can not cause chemical injury on the crops and does not have pesticide residues while resisting bacteria, thus realizing environmentally-friendly agricultural disease control.

Description

technical field [0001] The invention belongs to the field of agricultural chemistry, and in particular relates to a method for preventing and treating watermelon wilt, in particular to the use and method of chitosan oligosaccharide for resisting watermelon wilt. Background technique [0002] Fusarium wilt of watermelon is caused by the infection of Fusarium oxysporum fungus of the subphylum Idiomycotina. The pathogens overwinter in the soil and unripe bacteria-carrying fertilizers, and can survive for 5-6 years without the host, and some pathogens can survive for more than 10 years. Fusarium wilt of watermelon mainly invades through the root wound or the intercellular space at the top of the root hair, first grows between and within the host wall cells, then enters the vascular bundle, develops in the duct, the bacteria secretes pectinase and cellulase, decomposes and destroys the cells, The accumulation of pectin substances in the ducts will block the ducts, affect the wat...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01P3/00A01G13/00A01G7/06
Inventor 张善学陆红霞张余胜陈丁丁蓝亿亿肖斌杜丽芬徐俊光
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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