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Preparation method of microencapsulated pesticide for controlling sugarcane borers

A manufacturing method and technology of microcapsules, which are applied in the fields of botanical equipment and methods, pesticides, preservation of human or animal body, etc. The effect of less environmental pollution, cost saving of pesticides, and safe application of pesticides

Inactive Publication Date: 2016-06-29
NANTONG QINGANJIAN WATERLESS PRINTING & DYEING INST GENERAL PARTNER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of application is to use emulsifiable concentrate, powder and other dosage forms. Due to the short duration of action, multiple applications are required, which is costly and difficult to control the drug residue standard before harvest.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Select 30kg of dinotefuran and 40kg of hydrazine, add 70kg of dimethyl sulfoxide, heat to dissolve; add 200kg of methyl oleate after complete dissolution, surfactant Span 60#10kg, Tween 80# 15kg, stir evenly to make emulsion.

[0013] Then add 200 kg of gelatin aqueous solution with a concentration of 1 wt%, and react at a constant temperature at 55° C. for 3 hours under strong stirring to obtain microencapsulated pesticides.

[0014] Take 0.15 kg of microcapsule pesticide and 15 kg of diatomaceous earth, mix and stir evenly, add 45 kg of dry fine sand, mix evenly, and obtain medicinal soil. The medicinal soil is applied to the bottom of the seed ditch, and then the sugarcane seeds are placed and covered with soil, so that the sugarcane borer can be prevented, and no sugarcane borer disease occurs during the whole growth period of the sugarcane.

[0015] When controlling rice stem borer, mix 0.13kg of microencapsulated pesticide and 10kg of diatomaceous earth evenly, a...

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PUM

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Abstract

The invention provides a preparation method of a microencapsulated pesticide for controlling sugarcane borers. The method specifically comprises following steps: a neonicotinoid pesticide, a feeding suppressant and an organic solvent are fed into a reaction barrel and heated, an ester compound is added to the stirring barrel after the neonicotinoid pesticide and the feeding suppressant are dissolved, a surfactant is added for emulsification after uniform stirring, and an emulsion is prepared; an aqueous solution of a microcapsule wall material is added to the emulsion and stirred for a capsule forming reaction, and the microencapsulated pesticide is prepared, wherein the neonicotinoid pesticide is one of imidacloprid, thiacloprid, acetamiprid, clothianidin and dinotefuran; the feeding suppressant is one of 1,2-dibenzoyl-tert-butylhydrazine, tebufenozide and nitenpyram. The microencapsulated pesticide prepared with the method has a sustained release function and is convenient to apply.

Description

technical field [0001] The invention relates to a method for manufacturing microcapsule pesticides for controlling sugarcane borer pests, belonging to the field of pesticides in the chemical industry. Background technique [0002] Borers are borer pests, among which sugarcane borers, rice stem borers, and corn borers are the most serious. To control sugarcane borer, pesticides with plant systemic conduction function must be used. The earliest use was highly toxic organophosphorus pesticides such as methamidophos. After the production and use of methamidophos was banned by the state, some areas began to use carbamate pesticides with systemic conduction function. Due to the high toxicity of such pesticides, There is no antidote after poisoning, and the use of sugarcane with high pesticide residues after harvesting is also prohibited. The currently used pesticides with systemic conduction function are neonicotinoid pesticides, which degrade quickly, have no residue, are highl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N51/00A01N37/28A01P7/04
CPCA01N25/28A01N37/28A01N51/00A01N2300/00
Inventor 仲伟德陆嘉惠康玲张华伟
Owner NANTONG QINGANJIAN WATERLESS PRINTING & DYEING INST GENERAL PARTNER
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