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Complex weeding composition

A herbicidal composition and a technology for the composition are applied in the field of agrochemicals, and can solve the problems that weeds are easy to produce drug resistance, grass weeds are ineffective, and the herbicidal spectrum is narrowed, so as to delay the generation of weed resistance and improve rice safety. , the effect of reducing usage

Inactive Publication Date: 2017-05-31
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2-methyl-4-chloro (MCPA) or its salt or its ester is a phenoxyacetic acid selective hormone-type herbicide, which is easily absorbed by roots and leaves. It is mainly used to control various annual and Perennial broad-leaved weeds, it has a significant effect on Cyperus cyperi, three-edge grass, sausage, bermudagrass, and sagittarius, but it is basically ineffective against gramineous weeds
[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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Experimental program
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Effect test

Embodiment 1

[0034] Mesotrione 0.25%, Pretilachlor 3%, Sodium 2-methyl-4-chloride (as acid) 4%, Sodium a-alkenyl sulfonate (AOS) 1%, Sodium lignosulfonate (REAX82P) 4%, Glucose 6%, white carbon black 5%, kaolin balance. Weigh the pretilachlor crude oil in advance according to the above ratio, absorb it with white carbon black and let it stand for 24 hours, mix the above other ingredients according to the above ratio evenly, and pass through airflow pulverization, so that the average particle size of the material is less than 5 microns, and knead evenly with water, Move to granulation equipment for granulation, and dry at 45°C to obtain 7.25% mesotrione·pretilachlor·2M4Cl granules (2.5:30:40).

Embodiment 2

[0036] Mesotrione 0.1%, pretilachlor 4%, 2-methyl-4-potassium chloride (acid) 4%, sodium lauryl sulfate 1%, naphthalenesulfonate dispersant (MORWET D425) 5%, polyethylene Glycol 40005%, white carbon black 10%, attapulgite balance. Weigh pretilachlor in advance according to the above ratio, absorb it with white carbon black and let it stand for 24 hours, then mix the other ingredients uniformly according to the ratio, and crush them by air flow, so that the average particle size of the material is less than 5 microns, add water and knead evenly, and move to Granulate in granulation equipment and dry at 45°C to obtain 6.2% mesotrione·pretilachlor·2M4Cl granules (1:40:40).

Embodiment 3

[0038] Mesotrione 3%, pretilachlor 20%, sodium 2-methyl-4-chloride (as acid) 30%, calcium dodecylbenzenesulfonate 8%, sodium lignosulfonate 7%, fatty alcohol polyoxyethylene Ether 3%, white carbon black 8%, kaolin balance. After absorbing pretilachlor crude oil and white carbon black according to a certain ratio and letting it stand for 24 hours, mix all the ingredients evenly according to the above ratio, and jet mill to make the average particle size of the material less than 5um. A 53% mesotrione-pretilachlor-2-methyl-4-chlor wettable powder (3:20:30) can be obtained.

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Abstract

The invention discloses a complex weeding composition. The complex weeding composition comprises the following effective components: mesotrione, pretilachlor and chipton, salt thereof or ester thereof, wherein the weight ratio of the mesotrione, the pretilachlor andthe chipton, salt thereof or ester thereof (acid basis) is (1 to 4):(10 to 50):(20 to 60). The complex weeding composition can obviously enlarge the herbicide controlling spectrum, and improve the overall control effect of weeds in paddy fields. Meanwhile, the composition has good safety for paddy rice, and belongs to a good novel herbicide composition for controlling annual weeds in paddy fields.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a herbicidal composition aimed at solving the problem of controlling annual weeds 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N41/10A01N37/22A01N39/04A01P13/00
CPCA01N41/10A01N37/22A01N39/04A01N2300/00
Inventor 陈丰喜祁月月范伟赠王国华
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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