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Weeding composition containing pyrazosulfuron and fentrazamide and application thereof

A kind of herbicidal composition, the technology of tetrafen, which is applied in the fields of pesticides and herbicides, can solve the problem that the herbicidal combination of pyrazosulfuron-methyl and tetrafen has not been found, and cannot completely and effectively control weeds in rice fields , Residual toxicity of crops in the current season or subsequent crops, etc., to achieve the effect of improving drug efficacy, safety, and high safety

Inactive Publication Date: 2019-02-22
NANJING REDSUN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, herbicides in paddy fields are limited by the safety of crops, and the herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in paddy fields. Too long effective period, excessive dosage or uneven application will easily cause residual toxicity to current crops or subsequent crops
The inventors have found through research that the synergistic compounding of herbicides is an effective measure to expand the weed control spectrum and improve the control effect. So far, no herbicidal composition related to the compounding of pyrazosulfuron-methyl and tetrazolamide has been found.

Method used

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  • Weeding composition containing pyrazosulfuron and fentrazamide and application thereof
  • Weeding composition containing pyrazosulfuron and fentrazamide and application thereof
  • Weeding composition containing pyrazosulfuron and fentrazamide and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: 35% pyrazosulfuron-tetrazol emulsifiable concentrate (34:1)

[0023] 34% pyrazosulfuron-methyl, 1% tetrazole, 4% alkylphenol polyoxyethylene ether, 15% phenethylphenol polyoxyethylene ether, xylene supplemented to 100%, prepared according to the conventional preparation method It is 35% emulsifiable concentrate by mass percentage.

Embodiment 2

[0024] Embodiment 2: 30% pyrazosulfuron-tetrazen suspension concentrate (29:1)

[0025] 29% pyrazosulfuron-methyl, 1% tetrazole, 6% sodium methylnaphthalenesulfonate formaldehyde condensate, 3% nonylphenol polyoxyethylene ether, 0.5% magnesium aluminum silicate, 7% ethylene glycol , tributyl phosphate 2%, silicone oil 0.2%, the balance is water, according to the conventional preparation method, it is prepared into a suspending agent with a mass percentage of 30%.

Embodiment 3

[0026] Embodiment 3: 60% pyrazosulfuron-tetrazol water dispersible granules (59:1)

[0027] 59% pyrazosulfuron-methyl, 1% tetramethylene, 5% NNO (sodium methylene bis-naphthalene sulfonate), 3% ammonium sulfate, 2% polyvinyl alcohol, kaolin supplemented to 100%, according to the conventional Preparation method Prepare water dispersible granules (WDG) with a mass percentage of 60%.

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Abstract

The invention discloses a weeding composition containing pyrazosulfuron and fentrazamide. The weeding composition takes the pyrazosulfuron and fentrazamide as main active ingredients, and the mass ratio of the pyrazosulfuron to fentrazamide is 1:50 to 59:1. The invention further discloses application of the weeding composition in weed control of paddy fields. The weeding composition is applied toweed control of paddy fields, is particularly applied to controlling gramineous weeds and broadleaf weeds, and has obvious effects. Compared with a single dosage, the weeding composition disclosed bythe invention is capable of delaying the weed resistance on the premise of increasing the drug efficacy, is wide in weed control spectrum and long in lasting period, and has safety on rice and after-reap crops.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to the field of herbicides, and specifically relates to a herbicidal composition containing pyrazosulfuron-methyl and tetramide and its application. Background technique [0002] Metazosulfuron (metazosulfuron) is a sulfonylurea herbicide developed by Nissan Chemical Co., Ltd. It is mainly used for the control of velvetleum, amaranth, crabgrass and barnyardgrass in rice fields and wheat fields. [0003] Fentrazamide, also known as Baitianjing, chemical name: 4-(2-nitrophenyl)-5-oxo-4,5-dioxo-tetrazole-1-carboxylic acid cyclohexyl- Ethyl-amide. Tetramide is a new chemical structure inazolinone high-efficiency paddy field herbicide newly launched by Bayer in the Chinese market. It can be absorbed by the roots, stems and leaves of plants and transmitted to the meristems of roots and shoots. Inhibition of cell division, growth stop, tissue deformation, necrosis of growth point and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/38A01N47/36A01P13/00
CPCA01N47/38A01N47/36
Inventor 陈叶青张宝俊杨琴高瑞花郭祥蕊
Owner NANJING REDSUN
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