Weeding composition containing propyrisulfuron and dithiopyr and application of weeding composition

Abstract

The invention discloses a weeding composition containing propyrisulfuron and dithiopyr. The weeding composition takes the propyrisulfuron and the dithiopyr as main effective components, and the mass ratio of the dithiopyr to the propyrisulfuron ranges from 1:60 to 60:1. The invention further discloses an application of the weeding composition to post-emergence weeding in paddy fields, and particularly relates to an application of the weeding composition to control and elimination of graminaceous, sedge family and broadleaf weeds in the paddy fields. The weeding composition is used for post-emergence weeding in the paddy fields, particularly has remarkable effects on control and elimination of the graminaceous, sedge family and broadleaf weeds in the paddy fields, delays weed resistance on the premise of improving pesticide effects as compared with single dosage, is wide in weeding spectrum and long in lasting period and has safety for paddy rice and succeeding crops.

Description

technical field [0001] The invention belongs to the technical field of pesticides, especially the field of herbicides, and specifically relates to a binary compound herbicidal composition containing promasulfuron-methyl and dithiopyr. The herbicidal composition can be applied to post-emergence weeding in paddy fields. Background technique [0002] Propyrisulfuron is a selective broad-spectrum herbicide, which has a good control effect on weeds resistant to sulfonylurea herbicides, and is effective on older barnyardgrass, sedge, and broad-leaved grass. Can be foliar spray, shake application. [0003] Dimension, chemical name: S,S'-dimethyl-2-difluoromethyl-4-isobutyl-6-trifluoromethylpyridine-3,5-dithiocarboxylate Esters, structural formula: [0004] [0005] Dithiopyr belongs to the pyridine carboxylic acid herbicides. Used for weeding in paddy fields and lawns, it can control annual weeds such as barnyardgrass, bermudagrass, special-shaped sedge, knotweed, Alisma narr...

AI Technical Summary

Problems solved by technology

[0006] At present, herbicides in paddy fields are limited by the safety of crops, and the herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in paddy fields. Too long effective period, excessive dosage or uneven application will easily cause residual toxicity to current crops or subsequent crops

The inventor found through research that the synergistic combination of herbicides is an effective measure to expand the weed control spectrum and improve the control effect, and no herbicidal composition related to the combination of promasulfuron-methyl and dithiopyr has been found so far.

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