Controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl

A technology of fenflunom and pyrazosulfuron is applied in the directions of herbicides, algaecides, biocides, biocides, etc., and can solve the problem that the broad-leaved and sedge weeds and rice field barnyard cannot be completely controlled. It can reduce the labor intensity, improve the herbicidal effect, and improve the safety of rice.

Inactive Publication Date: 2018-03-27
ANHUI HUAXING CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has low activity against barnyardgrass in paddy fields, and it cannot completely control grass, broadleaf and sedge weeds in paddy fields.
[0008] However, after years of use of single doses of cyhalofop-ethyl, pyrazosulfuron-methyl, and fenthiazide, weeds have developed strong resistance, and their control effects are not as good as before, which seriously affects the yield of rice.

Method used

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  • Controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl
  • Controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl
  • Controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: 48% Cyhalofop-methyl-Pyrazosulfuron-Methiazide Sustained Release Agent

[0028]Cyhalofop-methyl 10%, pyrazosulfuron-methyl 3%, mefenacet 35%, citric acid 5%, sodium carbonate 6%, sodium lignosulfonate 5%, sodium dodecylbenzenesulfonate 1% , corn starch 1%, magnesium aluminum silicate 1.5%, kaolin added to 16%, slow-release microparticle system 19% Weigh each component according to the above formula, and mix cyhalofop-ethyl, pyrazosulfuron-methyl, mefenamide , dispersant (sodium lignosulfonate), wetting agent (sodium dodecylbenzenesulfonate), citric acid, sodium carbonate, corn starch, magnesium aluminum silicate, kaolin, and slow-release particulate system are added to the conical mixing Mix evenly in the machine, add the evenly mixed material to the jet mill for crushing, and then mix evenly. Add an appropriate amount of binder aqueous solution to mix and granulate, and after granulation, enter the tablet machine for tableting. Obtained 60% cyhalofop-methy...

Embodiment 2

[0031] Example 2 50% Cyhalofop-methyl-Pyrazosulfuron-Methiazide Sustained Release Agent

[0032] Cyhalofop-methyl 10%, pyrazosulfuron-methyl 5%, mefenacet 35%, sodium lignosulfonate 7%, dispersant NNO5%, sodium dodecylbenzenesulfonate 1%, tartaric acid 5%, 6% of ammonium bicarbonate, 2% of polycellulose sodium, 2% of white carbon black, 100% of pottery clay, 19% of sustained-release microparticle system. - Benzofen sustained-release agent;

[0033] The preparation method of the microparticle system is as follows: weigh 9 starches, dissolve them with 4 parts of 1% acetic acid solution, add 3 parts of calcium chloride at 800 rpm / min, stir and dissolve evenly, and obtain starch-calcium chloride solution for later use In addition, take 6 parts of gum arabic and dissolve it with 2 parts of deionized water to obtain a gum arabic solution; then weigh 3 parts of a-pinene, emulsify with 4 parts of Tween 80, and emulsify for 20 minutes, and add the emulsion to the starch - Stir evenly...

Embodiment 3

[0035] Example 3 53% cyhalofop-methyl-pyrazosulfuron-fenthiazide sustained release agent

[0036] Cyhalofop-methyl 10%, pyrazosulfuron-methyl 8%, mefenacet 38%, nonylphenol polyoxyethylene ether 2%, dispersant NNO 5%, sodium dodecylbenzenesulfonate 0.5%, 5% lemon, 6% ammonium bicarbonate, 2% polycellulose sodium, 2% magnesium aluminum silicate, 100% pottery clay, 15% slow-release microparticle system -Pyrazosulfuron-methyl-Methiazide Sustained-release Agent;

[0037] The preparation method of the microparticle system is as follows: Weigh 6 starches, dissolve them with 3 parts of 1% acetic acid solution, add 2 parts of calcium chloride at 800 rpm / min, stir and dissolve evenly, and obtain starch-calcium chloride solution for later use Another 6 parts of gum arabic was weighed and dissolved in 4 minutes of deionized water to obtain a gum arabic solution; then 3 parts of a-pinene was weighed and emulsified with 1.5 parts of Tween 80 for 10 minutes of emulsification time, and the ...

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Abstract

The invention discloses a controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl, which relates to the technical field of pesticide preparation. The controlled-releasing herbicide takes cyhalofop butyl, pyrazosulfuron ethyl and mefenacet as main effective components, wherein the mass ratio of cyhalofop butyl to pyrazosulfuron ethyl to mefenacet is 1-30:1-15:1-50; and the mass percentage content of cyhalofop butyl, pyrazosulfuron ethyl and mefenacet in the herbicide is 30-90%. The controlled-releasing herbicide has an advanced preparation technology, has no pollution, and has good technical value, the controlled-releasing herbicide has the advantage of convenient usage, spraying and fertilizer broadcasting cannot be performed, the controlled-releasingherbicide is directly sprayed at ridge or field, the controlled-releasing herbicide is uniformly dispersed in water through diffusion of the controlled-releasing herbicide in the water or soil, through a plant absorption and conduction principle, weeding effect is achieved, and the controlled-releasing herbicide has the advantages of safe and convenient usage, reduction of labor intensity, reduction of production cost, no environment pollution, and safe and convenient storage and transportation.

Description

Technical field: [0001] The invention belongs to the technical field of pesticide preparation and relates to a herbicide, in particular to a slow-release herbicide containing cyhalofop-ethyl, mefenacet and pyrazosulfuron-methyl. Background technique: [0002] Rice is one of the main food crops in my country, and weeding in rice fields is a major problem in production. Chemical weeding is currently the main means of controlling weeds. In recent years, due to the large-scale use of some herbicide varieties alone, many weeds have developed resistance. At the same time, because weeds occur with complex grass phases and various types, the use of a single species can no longer effectively solve farmland weeds, and all will show a certain aspect of defects. At present, there are many varieties of herbicides on the market, and at the same time, the requirements for application technology are high. A little carelessness in the application will cause problems such as phytotoxicity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N39/04A01N43/78A01N47/36A01P13/00
CPCA01N39/04A01N43/78A01N47/36
Inventor 汪志稳邵二凯徐文斐臧启军孟庆梅张俊
Owner ANHUI HUAXING CHEM IND CO LTD
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