Weeding composition

Abstract

The invention relates to a weeding composition. The weeding composition is of a ternary complex weeding composition taking mesotrione, atrazine and acetochlor as active ingredients, and the raw materials are taken in percentage by weight: 1%-20% of the mesotrione, 1%-40% of the atrazine, 1%-40% of the acetochlo; and the weeding composition is of a suspension concentrate prepared by the active ingredients and auxiliary materials. The weeding composition disclosed by the invention is used for controlling annual gramineous weeds and broadleaf weeds in corn fields.

Description

[0001] Technical Field The present invention belongs to the technical field of pesticides. Specifically, it is a ternary herbicidal composition containing mesotrione, atrazine and acetochlor. Background technique [0002] Mesotrione is a new type of triketone herbicide, which can be used for pre-emergence soil surface treatment or post-emergence spraying of stems and leaves. Mesotrione remains in the soil while taking effect quickly. The period is short, and it is safe for subsequent crops. At the same time, its biological activity is more than 10 times that of sulcotrione, and it has more development potential and competitiveness. Because of its environmental friendliness, it was approved by the U.S. Environmental Protection Agency in 2001 and sold in EU countries and the United States in 2002. However, its control effect on common broad-leaved weeds in corn fields such as cocklebur and bindweed is not very satisfactory. [0003] Atrazine is a systemic selective pre-emerge...

AI Technical Summary

Problems solved by technology

[0006] Among the many pesticide formulations at present, liquid preparations are commonly used, and emulsifiable concentrates have been used the most for a long time. However, organic solvents are used in large quantities in emulsifiable concentrates, which not only causes waste of chemical raw materials, but also brings great harm to the environment and human health. At the same time, due to the flammability of solvents, it brings great inconvenience to transportation and storage. Therefore, it has become a general trend to develop new liquid preparations to reduce or eliminate these toxic organic solvents.

At present, in view of the disadvantages of emulsifiable concentrates, more suspensions and emulsions in water are used as alternative dosage forms. However, for different types of original drugs, both dosage forms have certain limitations.

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