Weeding composition containing isoxaflutole, nicosulfuron and halosulfuron-methyl

Abstract

The invention discloses a weeding composition containing isoxaflutole, nicosulfuron and halosulfuron-methyl; effective active ingredients comprise isoxaflutole, nicosulfuron and halosulfuron-methyl, and the weight ratio of isoxaflutole to nicosulfuron to halosulfuron-methyl is (1-40) to (1-20) to (1-20). The weeding composition is mainly applied for preventing and removing weeds in corn fields, has the weeding effect significantly improved compared with that of single use or binary combination use of single agents, expands weeding spectra, has long lasting period, and is safe to corn. After ternary complexing of isoxaflutole, nicosulfuron and halosulfuron-methyl, the weeding composition has remarkable synergetic effects, can reduce the pesticide dosage of the single agents, reduces the use cost, alleviates the pollution of the environment, delays drug resistance generation of weeds and increases the service life of pesticides.

Description

technical field [0001] The present invention relates to pesticide herbicidal composition and application field thereof, specifically a kind of herbicidal composition with isoxaflutole, nicosulfuron-methyl and chlorpyrazosulfuron-methyl as effective active ingredients. Control of weeds in cornfields. Background technique [0002] Isoxaflutole (isoxaflutole): belongs to the herbicide class of p-hydroxyphenylpropionate dioxygenase inhibitors, has soil activity and early post-emergence stem and leaf herbicidal activity. The agent has outstanding control effects on broad-leaved weeds such as velvetleum, quinoa, purslane, reflexa, amaranth, cocklebur, chickweed, sorrel leaf Polygonum and other weeds. Weeds such as crabgrass, goosegrass, stephenia, foxtail and other weeds have a strong inhibitory effect, but they cannot completely kill them. [0003] Nicosulfuron: a systemic herbicide belonging to the sulfonylurea class, which can control annual and perennial grass weeds and some...

AI Technical Summary

Problems solved by technology

[0006] When isoxaflutole, nicosulfuron and chlorpyrazosulfuron are used alone to control weeds in cornfields, there is a single herbicidal spectrum, and they cannot completely control broadleaf weeds, gramineous weeds and sedge weeds at the same time A variety of weeds and weeds are prone to defects such as drug resistance; when the binary compound of isoxaflutole and nicosulfuron controls weeds in cornfields, although it has a better control effect on gramineous weeds and broad-leaved weeds However, there is still the defect of incomplete control of Cyperaceae weeds; when isoxaflutole and chlorpyrazosulfuron-methyl binary compound control weeds in cornfields, although it is effective against broad-leaved weeds and Cyperaceae weeds It has good control effect, but still has the defect of poor control effect on gramineous weeds; when the binary compound of nicosulfuron and chlorpyrazosulfuron was used to control weeds in cornfields, although it was effective on gramineous weeds and sedge Grass weeds have good control effect, but there are still defects of poor control effect on broad-leaved weeds

Apparently, isoxaflutole, nicosulfuron and chlorpyrazosulfuron are used alone or in combination with each other, all of which have a defect in one aspect, and cannot effectively and completely control the mixed occurrence of grasses in corn fields at the same time. Various weeds such as weeds, broadleaf weeds and sedges

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