Herbicide, herbicide water dispersible granule and preparation method thereof

A technology for dispersing granules and dispersing agents, applied in herbicides and algaecides, botanical equipment and methods, chemicals for biological control, etc. Or the problem of residual poisoning of subsequent crops, uneven application of pesticides, etc., to effectively control weeds in the field, avoid phytotoxicity, and achieve excellent herbicidal efficacy.

Active Publication Date: 2021-07-20
山东华阳农药化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, herbicides in cotton, soybean, peanut, potato and other crop fields are limited by the safety of the crops, and the herbicide spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in cotton fields. Herbicides are likely to cause residual toxicity to current crops or subsequent crops due to their high water solubility or long field duration, excessive dosage or uneven application.

Method used

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  • Herbicide, herbicide water dispersible granule and preparation method thereof
  • Herbicide, herbicide water dispersible granule and preparation method thereof
  • Herbicide, herbicide water dispersible granule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Preparation of water-dispersible granules with a total content of 10% of terbuthiauron and pyriflux

[0035] Weigh each component according to the following proportions: terbuthiauron and pyrizachlor-carbamide according to the mass ratio of 9:1 (9%+1%), dispersant lignosulfonate 3.0%, wetting agent fatty alcohol polysaccharide 3.0% of oxyethylene ether, 2% of disintegrant urea, and 80% of kaolin are put into a mixer and fully mixed, then pulverized by a jet mill, and pulverized to an ultrafine powder with a particle size of ≤10 μm to obtain a pulverized mixed material;

[0036] In the mixed material, add the solution of binder polyethylene glycol 1.0%, silicone defoamer 1% and water (15% of the mixed material quality after crushing), knead for 15 minutes; The material is extruded and granulated, and the wet granules are dried in a boiling dryer at 100-110°C until the water content is less than 2%, to prepare 10% terbuthiauron and pyrizachlor water-dispersible...

Embodiment 2

[0037] Example 2: Preparation of water dispersible granules with 20% total content of terbuthiauron and pyriflux

[0038] Weigh each component according to the following proportions: terbuthiauron and pyrizachlor-carbamide according to mass ratio 8:2 (16%+4%), dispersant lignin naphthalene sulfonate formaldehyde condensate 4.5%, wetting 5.0% alkylnaphthalene sulfate, 2.5% disintegrating agent starch, 65% light calcium carbonate, put into the mixer and mix well, then pulverize through the airflow mill, pulverize to ultrafine powder with particle size ≤ 10μm, and obtain pulverized post-mixed material;

[0039] In the mixed material, add the solution of binder polyethylene glycol 2.0%, silicone defoamer 1% and water (20% of the mixed material quality after crushing), knead for 15 minutes; The material is extruded and granulated, and the wet granules are dried in a boiling dryer at 95-105°C until the water content is less than 2%, so as to obtain 20% terbuthiauron and pyrizaflun ...

Embodiment 3

[0040] Example 3: Preparation of water-dispersible granules with a total content of 40% of terbuthiauron and pyriflux

[0041] Weigh each component according to the following proportions: terbuthiauron and pyrifluzan according to the mass ratio of 4:1 (32%+8%), dispersant polyoxyethylene polyoxypropylene ether 5.0%, wetting agent Diisooctyl sodium sulfosuccinate 6.0%, disintegrant glucose 3%, talcum powder 43%, put into a mixer and mix well, then pulverize through a jet mill, and pulverize to an ultrafine powder with a particle size of ≤10 μm to obtain Mixed materials after crushing;

[0042] In the mixed material, add the solution of binder polyvinyl alcohol 2.0%, organic silicon defoamer 1% and water (25% of the mixed material quality after pulverizing), carry out kneading 15 minutes; The wet material after kneading , carry out extrusion granulation, the wet granules are dried in a boiling dryer at 85-100°C until the water content is less than 2%, and 40% terbuthiauron and ...

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Abstract

The invention discloses a herbicide, a herbicide water dispersible granule and a preparation method thereof, belonging to the field of pesticide production. The active ingredients of the herbicide are terbuthiauron and pyrizaflun, and the mass ratio of terbuthiauron to pyrimicarb is 10:1 to 1:10. Tebuthiauron and pyrifluzan are mixed with dispersants, wetting agents, disintegrants, binders, and defoamers to prepare water-based dispersible granules for weeding, which can solve the problem of single herbicides for soil treatment in cotton fields at present. The effect is declining, and the problems of weed resistance and weed community succession are increasing year by year, so it has good application value.

Description

technical field [0001] The invention relates to the field of pesticide preparations, and specifically provides a herbicide, a herbicide water dispersible granule and a preparation method thereof. Background technique [0002] Cotton is the main economic crop in my country, and effective control of weeds in cotton fields is one of the important measures to improve cotton yield and quality. There are many kinds of weeds in cotton fields, which compete with crops for glory, fertilizer and water, and can also break through the mulch, which is an important factor causing crop yield loss. The herbicides used in cotton fields are mostly soil treatment herbicides, mainly trifluralin, pendimethalin and acetochlor. With the continuous application of trifluralin and other herbicides for a long time, resistance to them has developed The number of weeds is increasing year by year, and due to the selectivity of trifluralin and other herbicides to weeds, the number of sensitive weeds has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/54A01N47/36A01P13/00
CPCA01N43/54A01N47/36
Inventor 王同涛孙绪兵陈永平李和娟杨明生李振兴张现红
Owner 山东华阳农药化工集团有限公司
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