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Multi-element compound weeding composition

A herbicidal composition and multiple technologies, applied in the field of agricultural chemistry, can solve the problems of difficult to produce obvious effects, complex weeds in farmland, difficult green pesticides, etc., and achieve excellent control effect, broad herbicidal spectrum, The effect of delaying the development of weed resistance

Inactive Publication Date: 2018-06-08
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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  • Multi-element compound weeding composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In order to control annual weeds in paddy fields in agricultural production, the inventors carried out indoor toxicity tests with four components of fenpyramid, isooctyl fluroxypyr, fenoxaprop-p-ethyl and isoxadifen. Determination research, specific method: indoor pot method for stem and leaf spraying treatment, the test refers to "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 calculation formula for 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 mortality rate...

Embodiment 1

[0041] Formulation example 1: 8% fenpyramid · fluroxypyr isooctyl · fenoxaprop-p-ethyl dispersible oil suspension concentrate (6:1:1)

[0042] Fenoxaprop 6%, Isooctyl Fluroxypyr Acetate 1%, Fenoxaprop-P-P-P 1%, Isoxadifen 1%, Calcium Dodecyl Benzene Sulfonate 4%, Castor Oil Poly 5% of oxyethylene ether, 5% of polyoxyethylene polyoxypropylene block copolymer, 3% of organic bentonite, and the balance of soybean oil. Mix all the above-mentioned ingredients uniformly 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 8% oxacam-fluroxypyr-isooctyl-fine can be obtained. Fenoxaprop-ethyl dispersible oil suspension concentrate.

Embodiment 2

[0043] Formulation example 2: 16% fenpyrroxamide · isooctyl fluroxyacetate · fenoxaprop-p-ethyl microemulsion (10:3:3)

[0044] Mefenpyramid 10%, Isooctyl Fluroxypyr Acetate 3%, Fenoxaprop-P-P-P 3%, Isoxadifen 3%, Solvent Oil S150 30%, Ethanol 10%, Lauryl Calcium benzenesulfonate 8%, styryl phenol polyoxyethylene ether 6%, sodium 2-2-octyl maleate sulfonate 3%, deionized water to make up 100%. Completely dissolve the active ingredient in a solvent, then add an emulsifier and a spreading agent and mix evenly, and finally add deionized water, and stir thoroughly to prepare 16% fenoxachlor-fluroxypyr-isooctyl ·Fenoxaprop-ethyl microemulsion.

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Abstract

The invention discloses a multi-element compound weeding composition and an application thereof. The multi-element compound weeding composition comprises the following active components: metamifop, fluroxypyr-mepthyl, fenoxaprop-p-ethyl and a safety agent isoxadifen, wherein a weight ratio of metamifop to fluroxypyr-mepthyl to fenoxaprop-p-ethyl is (10-50) to (5-25) to (10-25); and a weight ratioof fenoxaprop-p-ethyl to isoxadifen is (1-2) to 1. The multi-element compound weeding composition disclosed by the invention has synergistic interaction, can beis suitable for removing annular weeds of a paddy field, has effect which that is obviously superior to that of a single preparation, expands weed control spectrum, reduces usage amount of pesticides, relieves pollution on environment, anddelays drug resistance of weeds, and is very good novel pharmaceutical composition for removing the annular weeds of the paddy field.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a multi-component compound herbicide composition aimed at solving the problem of controlling annual weeds in paddy fields. Background technique [0002] Metamifop belongs to the class of aryloxyphenoxypropionate herbicides, and its mechanism of action is to inhibit the biosynthesis of acetyl-CoA carboxylase. A few days after the application, the leaves of sensitive weeds will turn green and inhibit their growth. Generally, weeds will dry up and die after 2 weeks. It is mainly used to control most of the annual grass weeds in transplanted rice fields and direct-seeded fields, such as barnyard grass, stephenia, goosegrass, etc. [0003] Fluroxypyr-meptyl belongs to pyridyloxyacetic acid herbicides, which has systemic conduction effect. When used after emergence, sensitive crops will show typical hormone herbicide reactions. It is suitable for the control of broad-leaved w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/76A01N43/40A01N25/32A01P13/00
CPCA01N25/32A01N43/40A01N43/76
Inventor 祁月月李俊玲陈丰喜陈涛刘亚峰丁云泽
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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