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Weeding composite for rice field

A herbicidal composition and paddy field technology, applied in the field of agrochemicals, can solve the problems of narrowing herbicidal spectrum, environmental pollution, and weeds are prone to drug resistance, so as to reduce the amount of use, facilitate application, and delay weed drug resistance The effect produced

Inactive Publication Date: 2018-03-30
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Herbicide varieties containing a single active component have defects in weed control to varying degrees, such as weeds are prone to resistance after continuous use, the herbicide spectrum becomes narrower, and environmental pollution is caused.

Method used

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  • Weeding composite for rice field
  • Weeding composite for rice field
  • Weeding composite for rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Mesotrione 0.3%, Pretilachlor 2%, Cyclofenac 1.5%, Sodium a-alkenyl sulfonate (AOS) 1%, Sodium lignosulfonate (REAX82P) 4%, Glucose 6%, White charcoal Black 5%, Kaolin balance. Mix all the above-mentioned ingredients evenly according to the stated ratio, and through airflow crushing, the average particle size of the material is less than 5 microns, and add water to knead evenly, move to granulation equipment for granulation, and dry at 45°C to obtain 3.8% nitric acid Gramone · Pretilachlor · Cyclofen granules (3:20:30).

Embodiment 2

[0039] Mesotrione 0.3%, Pretilachlor 3%, Cyclofenac 1.5%, Sodium Lauryl Sulfate 1%, Naphthalene Sulfonate Dispersant (MORWET D425) 5%, Polyethylene Glycol 4000 5%, White carbon black 10%, attapulgite balance. Mix all the above-mentioned ingredients uniformly according to the stated proportions, and through jet crushing, make the average particle size of the material less than 5 microns, add water and knead evenly, move to granulation equipment for granulation, and dry at 45°C to obtain 4.8% nitric acid Grassone·pretilachlor·cyclaclofen granule (1:10:5).

Embodiment 3

[0041] Mesotrione 1%, Pretilachlor 20%, Cyclofenac 6.7%, Calcium Dodecyl Benzene Sulfonate 8%, Sodium Lignosulfonate 7%, Fatty Alcohol Polyoxyethylene Ether 3%, White Carbon Black 8%, Kaolin balance. Mix all the ingredients evenly according to the above ratio, and make the average particle size of the material less than 5um through jet milling. A 27.7% wettable powder of mesotrione·pretilachlor·cyclofenate (3:60:20) can be obtained.

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PUM

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Abstract

The invention discloses a weeding composite for a rice field, which comprises the following active components: mesotrione, pretilachlor and pyriftalid at a weight ratio of (3-9):(20-60):(10-30), wherein the total weight percentage of mesotrione, pretilachlor and pyriftalid in the composite is 1-80%. The composite can significantly extend a weed control spectrum, can improve a whole control effectfor weeds of the rice field, is good in rice safety, and is a very good novel medicine combination for controlling annual weeds of the rice field.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a herbicidal composition used in paddy fields. Background technique [0002] Mesotrione belongs to the para-hydroxyphenylpyruvate dioxygenase inhibitors (HPPD inhibitors). Mesotrione is a herbicide used for pre-emergence and post-emergence control of weeds in corn fields. It has a very wide herbicidal spectrum and can control barnyardgrass, crabgrass, nightshade, chrysanthemum, cocklebur and other weeds . [0003] Pretilachlor belongs to the chloroacetamide herbicides, which mainly inhibit the growth of cells by hindering protein synthesis. The drug can be absorbed through the plant hypocotyl, mesocotyl and coleoptile, and slightly absorbed by the root. The symptoms of damage are that the primary leaves do not emerge or protrude from the side of the coleoptile, twist and cannot stretch normally, growth and development stop, and even die. It has a very good sealing effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/54A01N41/10A01N37/22A01P13/00
CPCA01N37/22A01N41/10A01N43/54
Inventor 李清标祁月月范伟赠
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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