Herbicidal composition

A herbicidal composition and a technology of pretilachlor, applied in the field of agrochemicals, can solve the problems of weeds being prone to drug resistance, grass weeds being ineffective, and the herbicidal spectrum being narrowed, etc. Safety and the effect of reducing usage

Inactive Publication Date: 2017-04-26
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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Examples

Experimental program
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Effect test

Embodiment 1

[0023] Penoxsulam 0.25%, pretilachlor 2.5%, sodium 2-methyl-4-chloride (calculated as acid) 3.75%, sodium a-alkenyl sulfonate (AOS) 1%, sodium lignosulfonate (REAX82P) 5% , 5% glucose, 10% white carbon black, and the balance of kaolin. Weigh pretilachlor crude oil in advance according to the above ratio and adsorb it with white carbon black, mix the above other ingredients uniformly according to the above ratio, and pass through airflow crushing to make the average particle size of the material less than 5 microns, add water and knead evenly, and move to the granulation equipment Medium granulation, after drying at 45°C, 6.5% penoxsulam·pretilachlor·2M4Cl granules can be obtained.

Embodiment 2

[0025] Penoxsulam 0.375%, pretilachlor 3.75%, 2-methyl-4-potassium chloride (acid) 6.25%, sodium lauryl sulfate 1%, naphthalenesulfonate dispersant (MORWET D425) 5%, poly Ethylene glycol 4000 5%, white carbon black 10%, attapulgite balance. Weigh pretilachlor in advance according to the above ratio and adsorb it with white carbon black, mix the other ingredients uniformly according to the ratio, and pulverize the material through airflow to make the average particle size of the material less than 5 microns, add water and knead evenly, and move to the granulation equipment to make 10.375% penoxsulam·pretilachlor·2M4Cl granules can be obtained after drying at 45°C.

Embodiment 3

[0027] Penoxsulam 1%, pretilachlor 10%, sodium 2-methyl-4-chloride (calculated as acid) 15%, alkylphenol polyoxyethylene formaldehyde condensate sulfate 8%, sodium lignosulfonate 7%, fat Alcohol polyoxyethylene ether 3%, white carbon black 8%, kaolin clay balance. Adsorb pretilachlor crude oil and white carbon black according to the ratio, then mix all the ingredients evenly according to the above ratio, and then pulverize the material to make the average particle size of the material less than 5um. The 26% penoxsulam·pretilachlor·2M4Cl wettable powder can be obtained.

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Abstract

The invention discloses a herbicidal composition and applications thereof, and relates to the technical field of pesticide compounding. The herbicidal composition comprises the following effective components: penoxsulam, pretilachlor, and chipton / salts of chipton / esters of chipton; wherein the weight ratio of penoxsulam: pretilachlor: chipton / salts of chipton / esters of chipton is (1-3): (10-30): (10-50), and the weight of penoxsulam, pretilachlor, and chipton / salts of chipton / esters of chipton accounts for 1 to 80% of the total weight of the herbicidal composition. The herbicidal composition has the advantages that the herbicidal spectrum is obviously enlarged, the overall weed controlling effect is improved, and at the same time, the herbicidal composition is very safe to the paddy rice and is capable of well killing annual weeds in rice 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] Penoxsulam (penoxulam) belongs to the triazolopyrimidine sulfonamide herbicides, and its mechanism of action is an acetolactate synthase (ALS) inhibitor, which can be absorbed through stems, leaves, young shoots and roots, and transmitted to branches through xylem and phloem. growth tissue, inhibit plant growth, cause plant necrosis and death. It is suitable for dry direct seeding field, water direct direct seeding field, seedling field, throwing seedling field and transplanting cultivation field of rice. The method of application can be treated by spraying or soil mixing. Penoxsulam is a broad-spectrum herbicide for paddy fields, which can effectively control barnyardgrass, stephenia and annual Cyperaceae weeds, and is effective against many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N37/22A01N39/04A01P13/00
CPCA01N43/90A01N37/22A01N39/04A01N2300/00
Inventor 陈丰喜范伟赠祁月月王国华陈红丹
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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