Weeding composition containing cyhalofop-butyl, metamifop and pyriftalid

A technology of fenpyramid and herbicidal composition, which is applied in the field of agrochemicals, can solve the problems of weeds prone to drug resistance, narrowing herbicidal spectrum, and environmental pollution, so as to delay the occurrence of weed drug resistance and reduce the use of Quantity, convenient application

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, metamifop and pyriftalid
  • Weeding composition containing cyhalofop-butyl, metamifop and pyriftalid
  • Weeding composition containing cyhalofop-butyl, metamifop and pyriftalid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In order to control annual weeds in paddy fields in agricultural production, the inventors used three components of cyhalofop-methyl, fenpyramid and penetofen to carry out indoor toxicity determination research. The specific method: indoor potting method for stem and leaf For 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-methyl on 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 oxafenamide is used alone at a certain dose; Inhibition rate of fresh weight of target weeds when ether is used alone at a certain dose; E 0 = Theoretical value of the inhibitory rate of the fresh weight of the target when cyhalofop-ethyl, mefenfluz...

Embodiment 1

[0035] Formulation example 1: 36% cyhalofop-oxafen, and fenclofen dispersible oil suspension concentrate (50:50:80)

[0036] Cyhalofop-methyl 10%, Mefenoxafen 10%, Cyclofenac 16%, Calcium dodecylbenzenesulfonate 5%, Castor oil polyoxyethylene ether 4%, Polyoxyethylene polyoxypropylene block 3% copolymer, 0.1% organic silicon defoamer, 3% organic bentonite, and the balance of soybean oil. Mix all the above-mentioned ingredients evenly according to the stated ratio, and grind the obtained material with a horizontal sand mill so that the average particle size of the obtained material is less than 5 microns, and then 36% of cyhalofop-oxafen, oxafen, and cyclomethoprafen can be obtained. Disperse oil suspension.

Embodiment 2

[0037] Formulation example 2: 21% cyhalofop-methyl, fenpyramid, and pentaclofen suspension concentrate (30:30:50)

[0038] Cyhalofop-methyl 6%, Methafen 6%, Cyclofenac 10%, Isogenic Tridecyl Polyoxyethylene Ether (1305) 1%, Alkyl Glycoside (APG0810) 10%, Fatty Alcohol Polyoxygen Sodium vinyl ether sulfate 3%, magnesium aluminum silicate 1%, xanthan gum 0.15%, silicone defoamer 0.2%, ethylene glycol 5%, water balance. Cyhalofop-ethyl, fenpyramid, cyclic ester fluoride, isomerized tridecyl alcohol polyoxyethylene ether, APG0810, fatty alcohol polyoxyethylene ether sodium sulfate, magnesium aluminum silicate, silicone defoamer, ethyl alcohol Diol, part of water, etc. were mixed evenly in proportion, and were ground by a sand mill so that the average particle size of the material was less than 3 μm. The remaining amount of water, and mix again evenly to obtain 21% cyhalofop-oxafefen-pyridoxafen suspension concentrate.

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Abstract

The invention discloses a weeding composition containing cyhalofop-butyl, metamifop and pyriftalid, which comprises the following effective components: cyhalofop-butyl, metamifop and pyriftalid. The weight ratio of cyhalofop-butyl, metamifop and pyriftalid is (10-50):(10-50):(20-80). 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, meanwhile reduces 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-methyl, mefentrafen and penetofen. Background technique [0002] Cyhalofop-butyl belongs to the class of aryloxyphenoxypropionic acid herbicides and is a systemic conduction herbicide. It is absorbed by the leaves and leaf sheaths of plants, conducted by phloem, and accumulates in the meristem area of ​​plants. Inhibit the synthesis of acetyl-CoA carboxylase, stop 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 lead to plant death. It is mainly used in paddy fields, and can control grass weeds such as stephenia chinensis and barnyardgrass. [0003] Metamifop belongs to the class of aryloxyphenoxypropionate herbicides, and its mechanism of action is to inhibit the biosynthesis of acet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/76A01N43/54A01N39/04A01P13/00
CPCA01N39/04A01N43/54A01N43/76
Inventor 祁月月曹轩李清标范伟赠康家树
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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