Herbicide composition containing diflufenzopyr, dicamba and nicosulfuron and application of herbicidal composition

Abstract

The invention belongs to the field of pesticides and discloses a herbicidal composition containing diflufenzopyr, nicosulfuron and dicamba and application of the herbicidal composition. The herbicidal composition takes diflufenzopyr, nicosulfuron and dicamba as the main active ingredients, wherein diflufenzopyr, nicosulfuron and dicamba account for 10-85% of the herbicidal composition by mass and the mass ratio of diflufenzopyr to nicosulfuron to dicamba is (1-65):(0.5-75):(1-80). The herbicidal composition can be applied to preparing the herbicides for controlling the postemergence weeds in the cornfield and especially has obvious effect on preparing the herbicides for controlling various grass and broadleaf weeds in the cornfield. Compared with the single agent, the herbicidal composition reduces the drug dose, delays weed resistance, has wide herbicidal spectrum and long efficacy duration and does no harm to the corn and the aftercrops on the premise of improving the drug effect.

Description

technical field [0001] The invention belongs to the field of pesticides, and relates to a post-emergence herbicidal composition for corn fields, in particular to a herbicidal composition containing difenpyroxyfen, nicosulfuron and dicamba and an application thereof. Background technique [0002] Nicosulfuron (nicosulfuron), other names: Yunongle, Nicosulfuron, sulfonylurea herbicides, chemical name: 2-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfuron) Acyl)-N, N-dimethylnicotinamide, the structural formula is as follows: [0003] [0004] Nicosulfuron is a systemic, high-efficiency corn herbicide. It can effectively control a variety of annual grass weeds, broad-leaved weeds and sedge weeds in corn fields when used after emergence at low doses. It is rapidly absorbed by leaves and roots, and rapidly transported through xylem and phloem. Synthesis of branched-chain amino acids is blocked by acetolactate synthase. Weeds stop growing immediately after application, and the new...

AI Technical Summary

Problems solved by technology

However, dicamba has no effect on grass weeds, and some broad-leaved weeds have developed resistance to it, so its use is limited

[0013] At present, herbicides in cornfields 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 cornfields. Too long effective period, excessive dosage or uneven application will easily cause residual toxicity to current crops or subsequent crops

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