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Microcapsule slow-releasing seed coating agent for efficiently preventing and treating clubroots of oilseed rapes

A rapeseed clubroot and microencapsulation technology, applied in seed coating/seed dressing, biocide, fungicide, etc., can solve the problems of reducing economic and environmental value, threatening, increasing the workload of clubroot control, etc. Achieve the effect of easy to use, easy to implement, and good market application prospects

Inactive Publication Date: 2015-12-09
INST OF PLANT PROTECTION SICHUAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly reduces its economic and environmental value
[0007] In addition, the current clubroot control agents often need to be sprayed multiple times, which not only increases the workload of clubroot control, but also causes huge waste and threats to the environment

Method used

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  • Microcapsule slow-releasing seed coating agent for efficiently preventing and treating clubroots of oilseed rapes
  • Microcapsule slow-releasing seed coating agent for efficiently preventing and treating clubroots of oilseed rapes
  • Microcapsule slow-releasing seed coating agent for efficiently preventing and treating clubroots of oilseed rapes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The following materials are prepared in parts by weight: 10 parts of drug-containing microcapsules, 1 part of sodium carboxymethylcellulose, 6 parts of sodium lauryl sulfate, and 100 parts of diatomaceous earth. Among them, the drug in the drug-containing microcapsules is Pulutong, the material of the microcapsules is polylactic acid (Mn=3000Da), and the weight ratio of the drug to the microcapsule material is 1:5.

[0041] After the above materials are mixed, they are crushed until the particle size is not greater than 5 microns.

Embodiment 2

[0043] The following materials are prepared in parts by weight: 12 parts of drug-containing microcapsules, 8 parts of sodium carboxymethylcellulose, 8 parts of sodium lauryl sulfate, and 105 parts of diatomaceous earth. Among them, the drug in the drug-containing microcapsules is Pulutong, the material of the microcapsules is polylactic acid (Mn=4000Da), and the weight ratio of the drug to the microcapsule material is 1:6.

[0044] After the above materials are mixed, they are crushed until the particle size is not greater than 5 microns.

Embodiment 3

[0046] The following materials are prepared in parts by weight: 14 parts of drug-containing microcapsules, 5 parts of sodium carboxymethylcellulose, 5 parts of sodium lauryl sulfate, and 108 parts of diatomaceous earth. Wherein, the drug in the drug-containing microcapsules is Pulutong, the material of the microcapsules is polypropylene carbonate, and the weight ratio of the drug to the microcapsule material is 1:8.

[0047] After the above materials are mixed, they are crushed until the particle size is not greater than 5 microns.

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Abstract

The invention discloses a microcapsule slow-releasing seed coating agent for efficiently preventing and treating clubroots of oilseed rapes. The microcapsule slow-releasing seed coating agent is characterized by being prepared from, by weight, 10 parts to 15 parts of medicine-containing microcapsules, 1 part to 10 parts of film forming agents, 1 part to 10 parts of dispersing agents and 100 parts to 110 parts of assistants; in the medicine-containing microcapsules, the weight ratio of medicine to microcapsule materials is 1:5 to 10; the medicine comprises at least one kind of 6% oligosaccharide.link proteins, Pulvtong and 3% extremely-thin alternaria alternate activator proteins; the microcapsule materials comprise one kind of polylactic acid, polypropylene carbonate and chitosan-lactide copolymers; the medicine-containing microcapsules are prepared with an emulsified solvent evaporation method; the medicine-containing microcapsules, the film forming agents, the dispersing agents and the assistants are mixed to be grinded into particles with the size smaller than or equal to 5 micrometers, and the microcapsule slow-releasing seed coating agent is obtained. The preventing and treating effect of the microcapsule slow-releasing seed coating agent on the clubroots of the oilseed rapes is higher than 90%, and preventing and treating time is longer than eight weeks; the microcapsule slow-releasing seed coating agent is free of damage to the environment and injuries to health of people and livestock and easy to apply, and has good market application prospects.

Description

technical field [0001] The invention belongs to the field of prevention and treatment of rape clubroot, in particular to a microcapsule slow-release seed coating agent for effectively preventing and treating rape clubroot. Background technique [0002] The first epidemic of clubroot in our country occurred on cruciferous vegetables and caused a lot of losses. After the first report of Brassicaceae Plasmodium in 1995 on rape in China, the damage of rape clubroot in Chongqing, Sichuan, Yunnan, Hubei and other major rape producing areas has increased year by year, and it has become a major disease in the production process of rape. [0003] In recent years, rapeseed clubroot has spread rapidly in Sichuan and Hubei, and has seriously affected the yield and quality of rapeseed. Once rapeseed is infected by Plasmodium, the number of first effective branches, number of effective pods, number of seeds per corner, and thousand-seed weight will be greatly reduced, and the yield loss ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/04A01N25/28A01N25/18A01P3/00A01C1/06A01N43/16A01N43/50A01N43/40
Inventor 刘勇张蕾黄小琴伍文宪刘红雨周西全尹全宋君王东常丽娟张富丽
Owner INST OF PLANT PROTECTION SICHUAN ACAD OF AGRI SCI
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