Multiple herbicidal composition for paddy rice field

A herbicidal composition and paddy field technology, applied in the field of agrochemicals, can solve problems such as difficult to achieve obvious effects, complex weeds and weeds in farmland, and difficulty in green pesticides, and achieve excellent control effect and wide herbicidal spectrum , Delay the effect of weed resistance

Inactive Publication Date: 2018-09-28
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Farmland weeds are complex and diverse, and the application of chemical agents is one of the most effective chemical means to control agricultural weeds; it is a good solution to control agricultural weeds with new compounds without cross-resistance; however, transnational Although the company has a strong technical reserve and experience in new product development, there is an unavoidable fact that it is becoming more and more difficult to develop new formulations, efficient and environmentally friendly green pesticides in a timely manner, and the input-output ratio is also increasing. , the R&D cycle continues to grow, super weeds are becoming more and more serious, the speed of R&D is hard to match the speed of weed resistance, and this trend cannot be reversed
Other methods, such as crop layout adjustment, rotation of different pesticides, etc., are difficult to achieve obvious effects in actual operation.

Method used

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  • Multiple herbicidal composition for paddy rice field
  • Multiple herbicidal composition for paddy rice field
  • Multiple herbicidal composition for paddy rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In order to control annual weeds in rice fields in agricultural production, the inventors used four components of cyhalofop-ethyl, isooctyl fluroxyacetate, fenoxaprop-ethyl and isoxadifen to carry out indoor toxicity testing Research, the specific method: the indoor pot method is used to spray the stems and leaves, and the test refers to the "Pesticide Indoor Bioassay Test Guidelines for Herbicide Part VII".

[0026] The colby equation is used to determine the expected herbicidal effect of the mixture: the activity of the three pesticides is tested using the Colby method, and the formula for calculating the mixing effect is: E 0 =A*B*C / 100 (3-1) , where, A represents the measured weed survival rate of drug 1; B represents the measured weed survival rate of drug 2; C represents the measured weed survival rate of drug 3; E is the measured weed after A, B and C are mixed Survival rate;

[0027] The test generally investigates the control effect of weeds (that is, the mor...

Embodiment 1

[0040] Formulation example 1: 10% cyhalofop-methyl · fluroxypyr isooctyl · fenoxaprop-ethyl dispersible oil suspension concentrate (8:1:1)

[0041] Cyhalofop-methyl 8%, isooctyl fluroxypyr acetate 1%, fenoxaprop-ethyl 1%, isoxadifen 1%, calcium dodecylbenzenesulfonate 4%, castor oil polyoxygen Vinyl ether 5%, polyoxyethylene polyoxypropylene block copolymer 5%, organic bentonite 3%, soybean oil balance. Mix all the above-mentioned ingredients uniformly according to the stated ratio, and grind the obtained material with a horizontal sand mill to make the average particle size of the obtained material less than 5 microns, and then 10% cyhalofop-methyl, isooctyl fluroxypyr, and quinine can be obtained Fenzuprop-ethyl dispersible oil suspension concentrate.

Embodiment 2

[0042] Formulation example 2: 22% cyhalofop-methyl · isooctyl fluroxypyr acetate · fenoxaprop-ethyl microemulsion (16:3:3)

[0043] Cyhalofop-ethyl 16%, isoctyl fluroxypyr acetate 3%, fenoxaprop-ethyl 3%, isoxadifen 3%, solvent naphtha S150 30%, ethanol 10%, dodecylbenzene Calcium sulfonate 8%, styryl phenol polyoxyethylene ether 6%, maleate 2-2-octyl sodium sulfonate 3%, deionized water to make up 100%. Dissolve the active ingredients completely in a solvent, then add emulsifiers and spreaders and mix evenly, and finally add deionized water, and stir thoroughly to obtain 22% cyhalofop-ethyl. Fenoxaprop-ethyl microemulsion.

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Abstract

The invention discloses a multiple herbicidal composition for paddy rice field and an application of same. The herbicidal composition includes the following active components: cyhalofop-butyl, fluroxypyr-mepthyl, fenoxaprop-p-ethyl and a safety agent isoxadifen-ethyl, wherein weight ratio of the cyhalofop-butyl, the fluroxypyr-mepthyl to the fenoxaprop-p-ethyl is (8-24):(1-5):(1-5), and the weightratio of the fenoxaprop-p-ethyl to the isoxadifen-ethyl is 1-2:1. The multiple herbicidal composition has a synergistic effect and can be used for preventing and removing annual weeds in the paddy rice field, is significantly better than single preparation in effect, is enlarged in herbicidal spectrum and reduced in usage amount, reduces environment pollution, delays generation of drug resistanceof weeds, and is an excellent novel medicine composition for preventing and removing the annual weeds in the paddy rice field.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a paddy field multi-component herbicide composition aimed at solving the problem of controlling annual weeds in paddy fields. Background technique [0002] Cyhalofop-butyl is the only aryloxyphenoxypropionic acid herbicide that is highly safe for rice. It has a systemic transduction effect, is absorbed by the leaves and leaf sheaths of the plant, conducts in the phloem, and accumulates in the plant. In the meristem area of ​​the body, the inhibition of acetyl-CoA carboxylase (ACCase) stops the synthesis of fatty acids, the growth and division of cells cannot be carried out normally, the membrane system and other lipid-containing structures are destroyed, and finally the plant dies. Cyhalofop-ethyl is mainly used to control important grass weeds, such as daughters, crabgrass, paspalum, foxtail, goosegrass, etc. It is ineffective against sedges and broad-leaved weeds. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/76A01N39/04A01N43/40A01N25/32A01P13/00
CPCA01N25/32A01N39/04A01N43/40A01N43/76
Inventor 祁月月李清标陈丰喜王国华范伟赠钱祥法金鑫磊赵昱清
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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