Herbicidal composition containing diflufenican and clodinafop-propargyl and application thereof

Abstract

The invention belongs to the field of pesticide, and discloses a herbicidal composition containing diflufenican and clodinafop-propargyl and application thereof. The diflufenican and the clodinafop-propargyl are used as main active ingredients in the herbicidal composition; the mass ratio of the diflufenican to the clodinafop-propargyl is 1-80: 1-80; and the diflufenican and the clodinafop-propargyl account for 5 to 85 percent of the total mass of the herbicidal composition. The herbicidal composition can be applied in preparation of herbicide for controlling weeds among barley or wheat fieldseedlings, particularly in preparation of herbicide for controlling various gramineous weeds and broadleaf weeds in wheat or barley fields. Compared with a single-component herbicide, the herbicidal composition delays the weed resistance, has broad herbicidal spectrum and acts for a long time on the premise of improving herbicide effect, and is safe for wheat, barley and afterculture crops.

Description

technical field [0001] The invention belongs to the field of pesticides and relates to a herbicidal composition, in particular to a herbicidal composition containing diflufenican and clodinafop-propargyl and an application thereof. Background technique [0002] Diflufenican (diflufenican), also known as diflufenican, chemical name: 2,4-dichloro-2-(α,α,α-trichlorofluorom-phenoxy)-3-pyridineanilide, Belonging to pyridine herbicides, its structural diagram is as follows: [0003] [0004] Diflufenamide is a carotenoid biosynthesis inhibitor, which can cause chlorophyll damage and cell rupture, causing plant death. It is a broad-spectrum selective wheat field herbicide with a long residual effect in soil. It is suitable for barley and wheat fields before germination Or post-emergence weeding. Diflufenamide is applied at 125-250g / ha pre-emergence or post-emergence to wheat and barley fields in autumn to control gramineous weeds and broad-leaved weeds, especially weeds such a...

AI Technical Summary

Problems solved by technology

However, clodinafop-propargyl is ineffective against broad-leaved weeds, and its herbicidal spectrum is relatively narrow, which limits its use

[0009] 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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