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Weeding composition containing cyhalofop-butyl, fenoxaprop-p-ethyl and metamifop

A technology of fenoxaprop-p-ethyl and fenpyramid, which is 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 and facilitate application , Delay the effect of weed resistance

Inactive Publication Date: 2018-02-27
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 composition containing cyhalofop-butyl, fenoxaprop-p-ethyl and metamifop
  • Weeding composition containing cyhalofop-butyl, fenoxaprop-p-ethyl and metamifop
  • Weeding composition containing cyhalofop-butyl, fenoxaprop-p-ethyl and metamifop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In order to prevent annual weeds in rice fields in agricultural production, the inventors used three components of cyhalofop-ethyl, fenoxaprop-ethyl and oxaprop-methyl to carry out indoor toxicity determination research, the specific method: indoor potting method Stem and leaf spray treatment, the test refers to the "Pesticide Indoor Bioassay Test Guidelines for Herbicide Part VII".

[0022] According to the Colby method to evaluate the combination of herbicides (NY / T 1155.7-2006), the formula is as follows: E 0 =a*b*c / 100 (3-1) , where, a is the inhibitory rate of cyhalofop-ethyl to the fresh weight of the target weeds when a certain dose is used alone; b is the inhibitory rate of the fresh weight of the target weeds when fenoxaprop-ethyl is used alone at a certain dose; c is oxazole Inhibition rate of fresh weight of target weeds when acylide was used alone at a certain dose; E 0 = Theoretical value of the inhibitory rate on the fresh weight of the target when the t...

Embodiment 1

[0035] Formulation example 1: 21% cyhalofop-methyl · oxaprop-p-ethyl · oxapropen dispersible oil suspension concentrate (30:10:30)

[0036] Cyhalofop-methyl 9%, Fenoxaprop-P-P-P 3%, Fenoxam 9%, Calcium Dodecyl Benzene Sulfonate 5%, Castor Oil Polyoxyethylene Ether 4%, Polyoxyethylene Polyoxypropylene Block copolymer 3%, organosilicon defoamer 0.1%, organic bentonite 3%, soybean oil balance. Mix all the above-mentioned ingredients evenly according to the stated ratio, and grind them with a horizontal sand mill so that the average particle size of the obtained material is less than 5 microns, and then 21% cyhalofop-ethyl, fenoxaprop-p-ethyl, and oxapropen are prepared Amine dispersible oil suspension concentrate.

Embodiment 2

[0037] Formulation example 2: 15% cyhalofop-methyl · fenoxaprop-p-ethyl · fenoxam microemulsion (10:10:30)

[0038] Cyhalofop-methyl 3%, Fenoxaprop-P-P-P 3%, Fenoxam 9%, Solvent Naphtha S150 45%, Ethanol 5%, Calcium Dodecyl Benzene Sulfonate 8%, Styrylphenol Polyoxygen Vinyl ether 6%, maleic acid di-sec-octyl sodium sulfonate 3%, deionized water to make up 100%. Completely dissolve the active ingredient in a solvent, then add emulsifier and spreading agent and mix evenly, finally add deionized water, and stir thoroughly to obtain 15% cyhalofop-ethyl-oxaprop-ethyl-oxazole Amylamide microemulsion.

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Abstract

The invention discloses a weeding composition containing cyhalofop-butyl, fenoxaprop-p-ethyl and metamifop, which comprises the following effective components: cyhalofop-butyl, fenoxaprop-p-ethyl andmetamifop. The weight ratio of cyhalofop-butyl, fenoxaprop-p-ethyl and metamifop is (10-50):(5-20):(10-50). The weeding composition has a synergistic interaction or synergistic interaction function, can be used for preventing and killing off annual weeds, has effects remarkably superior to those of single dosage or dual mixed preparations, has an enlarged herbicide controlling spectrum, meanwhilereduces the pesticide usage amount, alleviates the pollution to the environment, delays the generation of weed resistance to pesticides, and is a very good novel medicine composition for preventing and killing off annual weeds in paddy fields.

Description

technical field [0001] The invention belongs to the technical field of agrochemicals, and in particular relates to a herbicidal composition containing cyhalofop-ethyl, fenoxaprop-p-p-ethyl and fenpyramid. Background technique [0002] Cyhalofop-butyl belongs to the class of aryloxyphenoxypropionic acid herbicides and is a systemic herbicide. It is absorbed by the leaves and leaf sheaths of plants, conducted by phloem, and accumulated in the meristem area of ​​plants. Inhibition of acetyl-CoA carboxylase stops the synthesis of fatty acids, the growth and division of cells cannot be carried out normally, the membrane system and other membrane-containing structures are destroyed, and finally leads to plant death. It is mainly used in paddy fields, and can control grass weeds such as stephenia chinensis and barnyardgrass. [0003] Fenoxaprop-P-ethyl is an acetyl-CoA carboxylase inhibitor, a systemic conduction type post-emergence stem and leaf treatment agent, which can effecti...

Claims

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Application Information

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IPC IPC(8): A01N39/04A01N43/76A01P13/00
CPCA01N39/04A01N43/76
Inventor 祁月月曹轩李清标范伟赠康家树
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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