Herbicide composition containing 4-(2-chloro-(methylsulfonyl)-3-((2,2,2-trifluoroethoxyl)methyl)benzoyl)-1-ethyl-1H-pyrazole-5-yl-1,3-dimethyl-1H-pyrazole-4-formate and saflufenacil, and application thereof

Abstract

The invention relates to the technical field of pesticides, specifically to a herbicide composition containing 4-(2-chloro-(methylsulfonyl)-3-((2,2,2-trifluoroethoxyl)methyl)benzoyl)-1-ethyl-1H-pyrazole-5-yl-1,3-dimethyl-1H-pyrazole-4-formate and saflufenacil, and an application thereof. The composition comprises an effective component A namely 4-(2-chloro-(methylsulfonyl)-3-((2,2,2-trifluoroethoxyl)methyl)benzoyl)-1-ethyl-1H-pyrazole-5-yl-1,3-dimethyl-1H-pyrazole-4-formate, an effective component B namely saflufenacil and a safener compound C, wherein the safener compound C is one or more selected from the group consisting of isoxadifen-ethyl, cyprosulfamide, mefenpyr-diethyl and furilazole; and the mass percentage content of A, B and C in the herbicide composition accounts for 1% to 95%, preferably 10% to 80% of the total content of the herbicide composition. The herbicide composition can effectively prevent and control common weeds in a corn field, improves prevention and control effects on noxious broadleaf weeds, and specifically has significant prevention and control effects on Gramineae weeds like crabgrass, eleusine indica and setaria viridis and broadleaf weeds like amaranthus retroflexus and conyza canadensis which can generate resistance to ALS inhibitor herbicides. The herbicide composition provided by the invention can expand weed control spectrum, reduce usage amount and retard generation and development of drug tolerance and drug resistance to weeds, and has important economic value and social significance.

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to a group of cornfield herbicidal compositions comprising fenflurzone and saflufenacil. Background technique [0002] Chemical weeding is the most economical and effective means of weed control in farmland. However, long-term continuous high-dose use of a single species or a single mode of action of chemical herbicides is likely to cause problems such as weed resistance and resistance evolution. Reasonable compounding or mixing of herbicide compounds has the advantages of expanding the spectrum of weeds, improving the control effect, delaying the occurrence and development of weed resistance and drug resistance, and is one of the most effective methods to solve the above problems. [0003] Saflufenacil is a protoporphyrinogen oxidase (PPO) inhibitor, which can effectively control a variety of broad-leaved weeds, but is ineffective against gramineous weeds. It has a fast killing effect a...

AI Technical Summary

Problems solved by technology

These two herbicides have been used on corn for many years, and the resistance of weeds to nicosulfuron has begun to emerge. The activity of mesotrione is low and the herbicidal sp

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