Herbicide emulsifiable concentrate preparation containing pentoxazone and amidosulfuron

Abstract

The invention relates to a herbicide emulsifiable concentrate preparation containing pentoxazone and amidosulfuron. The active ingredients, pentoxazone and amidosulfuron, in the herbicide are mutually mixed to provide a broad weed control spectrum. The active ingredients in the herbicide are matched to play a very good synergy role in a certain range, so that the herbicide is higher in control effect than a single agent, and the drug property maintenance time is long; the herbicide is extremely safe to cereal crops.

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to a herbicide emulsifiable concentrate preparation containing cyclopentazone and rimsulfuron-methyl. Background technique [0002] Cyclopentazone, chemical name 3-(4-Chloro-5-cyclopentyloxy-2-fluorophenyl)-5-isopropylene-1,3-oxazoline-2,4-dione , the structural formula , belonging to oxazolones, the pure product is a colorless, odorless powdery solid; melting point 104°C; density 1.418 (25°C); vapor pressure <1.11×10-5Pa (25°C). Partition coefficient LogP=0.67; solubility in water is 0.216 mg / l (25°C); stable to light, heat and acid, unstable to alkali. It is mainly used to control barnyard grass and annual weeds. Using p-fluorophenol as the starting material, through chlorination, esterification and nitration to obtain intermediate substituted nitrobenzene; through hydrolysis to obtain intermediate substituted phenol potassium salt; and then through etherification and reduction to...

AI Technical Summary

Problems solved by technology

[0004] After the above two drugs are used alone for a long time, it is easy to cause the plant pathogens to develop drug resistance, resulting in problems such as increased dosage, reduced control effect, and shortened duration, which is not conducive to sustainable development of the environment.