Synergistic weeding composition containing clopyralid and carfentrazone-ethyl and application thereof

Abstract

The invention discloses a synergistic weeding composition containing clopyralid and carfentrazone-ethyl and application thereof. The weeding composition takes clopyralid and carfentrazone-ethyl as main active ingredients, wherein the mass ratio of the clopyralid to the carfentrazone-ethyl is 1-80:1-80. The synergistic weeding composition can be applied to weeding of a wheat land after seedling planting and has remarkable effect when applied to the prevention and control of various broadleaf weeds in the wheat land. Compared with a single agent, the weeding composition delays weed resistance, has a broad weeding spectrum, acts for a long time and is safe for wheat and afterculture crops on the premise of enhancing medicament effect.

Description

Technical field [0001] The invention belongs to the technical field of pesticides, especially the field of herbicides, and relates to a binary compound agent of clopyralid and pyroxopen. The herbicidal composition can be used for post-emergence weeding in wheat fields. Background technique [0002] Wheat is my country's main food crop. It is reported that wheat across the country suffers from varying degrees of weed damage every year. Severe weed damage can reduce wheat production by more than 50% if weeding is not carried out in the field. In order to reduce the economic losses caused by weed damage and reduce labor intensity, chemical weeding has gradually been accepted by people because of its convenience, quick effect, and long control time. [0003] In recent years, with the increase in herbicide varieties and the widespread promotion of chemical control technology in agricultural production, chemical weed control has been widely used in various stages of wheat growth....

AI Technical Summary

Problems solved by technology

However, pyrentrazone-ethyl can only be used as a treatment agent for stems and leaves. It cannot control unearthed weeds, and its control effect on older weeds is poor. In addition, high doses will cause phytotoxicity to wheat, so when used, Pay special attention to the timing and dosage of medication

[0010] At present, herbicides in wheat fields are limited by the safety of crops, and their herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in wheat fields. Too long effective period, excessive dosage or uneven application will easily cause residual toxicity to current crops or subsequent crops

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