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Use of chitosan oligosaccharide as crop safener

A technology of chitosan oligosaccharides and safeners, applied in the field of agricultural chemicals, can solve problems such as improper application timing, secondary phytotoxicity, and affecting crop growth

Active Publication Date: 2015-06-10
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of using insecticides, fungicides, herbicides and plant growth regulators, if the timing of application is improper or the dosage is too large, it will cause phytotoxicity to crops and affect the growth of crops
Even if some pesticides are operated according to the normal operation rules, they will cause phytotoxicity to crops, which will affect the growth of crops in mild cases, and cause disease symptoms or even death of crops in severe cases.
[0003] Conventional methods to prevent and control crop phytotoxicity are generally methods such as spraying and washing pesticides, loosening soil and topdressing fertilizers, spraying mitigating drugs, strengthening fertilizer and water management, and removing severe phytotoxicity parts. The current mitigating drugs will also cause secondary injury, which makes the effect of prevention and treatment of injury limited
[0004] Although there are many solutions to the current frequent accidents caused by chemical damage, there are relatively few measures that are effective, environmentally friendly, and will not cause secondary chemical damage

Method used

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  • Use of chitosan oligosaccharide as crop safener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 uses chitosan oligosaccharide composition to prevent the experiment that phytotoxicity takes place

[0032] Different crops were sprayed with pesticides, 4 groups were treated with the same treatment for each crop, and 1 group was treated as a control, and the average value was used to calculate the percentage of crop damage. The evaluation indicators of phytotoxicity are marked in the table below. When spraying chitosan oligosaccharide and clear water treatment, if it is treated multiple times in a period, the interval between each time is 8 days, and " / " is used to indicate the interval, the concentration is ppm, and the concentration of the sprayed pesticide is also expressed in ppm . For the whole process of application, observe the phytotoxicity situation 10 days after spraying the pesticide, count the proportion of phytotoxicity plants, and then count the phytotoxicity situation again during the harvest period. The specific treatment situation is as...

Embodiment 2

[0035] Example 2 The experiment of applying the chitosan oligosaccharide composition to alleviate the phytotoxicity after the application and the phytotoxicity

[0036] The effect of spraying chitosan oligosaccharides after the crop phytotoxicity occurs is by spraying the chitosan oligosaccharide solution after the phytotoxicity produces symptoms, the number of times of spraying and the concentration are as follows, and then observing and counting the pesticides 15 days after spraying chitosan oligosaccharides harm mitigation.

[0037]

[0038] Spraying chitosan oligosaccharides after the occurrence of phytotoxicity can also effectively alleviate the phytotoxicity.

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Abstract

The invention relates to a use of a chitosan oligosaccharide as a crop safener, and also provides a method for controlling the phytotoxicity of crops through applying a composition including the chitosan oligosaccharide. The method is characterized in that treatments of all growth stages of the crops by using the composition comprise the seed soaking treatment of crop seeds by the using the composition, or the application of the composition to the crops in the seedling stage, or the application of the composition to the crops in the flowering stage, or the application of the composition to the crops after the flowering stage, or the sequential application of the composition to any above two of the crop seeds, and the crops in the seedling stage, before the flowering stage and after the flowering stage, or the application of the composition after the application of a pesticide to the crops, or the application of the composition after the phytotoxicity suffering of the crops, or the application of the composition before the expected pesticide spray, and the weight percentage of the chitosan oligosaccharide in the composition is 0.0015-0.020%. In the invention, it is found that the chitosan oligosaccharide can effectively control the phytotoxicity occurrence of the crops, improve the crop output and improve the crop quality.

Description

technical field [0001] The invention belongs to the field of agricultural chemicals, in particular to the use of chitosan oligosaccharide as a crop safener. Background technique [0002] In the process of using insecticides, fungicides, herbicides and plant growth regulators, if the timing of application is improper or the dosage is too large, it will cause phytotoxicity to crops and affect the growth of crops. Even if some pesticides are operated according to the normal operating rules, they will cause phytotoxicity to crops, affecting crop growth in mild cases, and causing disease symptoms or even death of crops in severe cases. [0003] Conventional methods to prevent and control crop phytotoxicity are generally methods such as spraying and washing pesticides, loosening soil and topdressing fertilizers, spraying mitigating drugs, strengthening fertilizer and water management, and removing severe phytotoxicity parts. At present, mitigating drugs will also cause secondary ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/32
Inventor 张善学侯华民陆红霞张余胜陈丁丁王会民
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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