Dry flowable containing pinoxaden and topramezone

Abstract

The invention relates to a dry flowable containing pinoxaden and topramezone. A dispersant in the dry flowable is a composite dispersant of a lignosulfonate and one selected from an alkylphenol polyoxyethylene ether formaldehyde condensate and a fatty alcohol polyoxyethylene ether sulfate, wherein the weight ratio of the lignosulfonate to the alkylphenol polyoxyethylene ether formaldehyde condensate or the fatty alcohol polyoxyethylene ether sulfate is 5:1-2:1. The lignosulfonate is sodium lignosulfonate or calcium lignosulfonate. The dry flowable of pinoxaden and topramezone has good dispersing and suspending properties in performance, can form a homogeneous suspension system during use, and can save labor and time when being used to spray post-emergence stems and leaves for weeding. Especially, the dry flowable is excellent in stability, especially heat storage stability, due to the selection of a specific composite dispersant.

Description

technical field [0001] The present invention relates to the field of herbicides, in particular to a compound herbicide composition, especially the composition formulated into a dry suspension, in particular to a dry suspension containing pinoxaden and oxentrazone. technical background [0002] Pinoxaden, molecular formula C 23 h 32 N 2 o 4 , a new phenylpyrazoline herbicide, according to the mechanism of action, it belongs to the inhibitor of acetyl-CoA carboxylase (ACCase). By inhibiting the activity of ACCase, the agent hinders the biosynthesis of fatty acids and interferes with the formation of cell membranes, leading to the stop of weed growth and eventually death. Pinoxaden is a selective, systemic herbicide. It is mainly used to control annual grass weeds in wheat field after emergence, such as kanmai, Japanese kanmai, wild oats, ryegrass, oystergrass and clubhead grass, etc. [0003] Topramezone, the molecular formula is C 16 h 17 N 3 o 5 S, a benzopyrazolon...

AI Technical Summary

Problems solved by technology

[0004] The prior art reports the herbicidal combination of pinoxaden and oxentrazone, for example, Chinese patent 201610806407 discloses the combination of pinoxaden and oxentrazone; however, there is a binary herbicidal combination comprising the two combinations However, there is still the problem that the activity is not high enough, especially when the natural environment deteriorates, such as high temperature or low temperature storage, its stability is not good

[0005] The prior art does not relate to the preparation of pinoxaden or oxentrazone single agent, or the combination of the two into dry suspension

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