Herbicide compositions containing pyrasulfotole and mesosulfuron-methyl

Abstract

The invention relates to the technical field of pesticides and discloses a composite herbicide for a wheat paddock. The herbicide comprises two active components, namely pyrasulfotole and mesosulfuron, wherein the weight ratio of the two active components is (3:16)-(48:1); the composite herbicide comprises 0.5-85 percent of the two active components by weight percent. After the pyrasulfotole and the mesosulfuron are mixed, the weed prevention efficiency is improved through the complementarity between the two active components, so that the shortcoming caused by the use of any one of the pyrasulfotole and the mesosulfuron is overcome; furthermore, the herbicide can prevent and remove both grassy weeds in the wheat paddock and broad leaf weeds and has an outstanding synergism effect. The herbicide composition has an obvious weeding effect, is high in safety to wheat, does not have influence on afterreap crops and is an ideal herbicide.

Description

【Technical field】 [0001] The present invention relates to a herbicide composition for preventing and treating weeds in wheat fields, in particular to a herbicide for preventing and treating gramineous weeds and broad-leaved weeds in wheat fields, which is based on Pyrasulfotole and disulfuron-methyl A binary herbicide composition as an active ingredient. 【Background technique】 [0002] Wheat is the second largest grain crop in my country and plays an important role in the national economy. In the process of wheat production, pests and weeds are very harmful and often cause serious economic losses. The widespread occurrence of weeds in wheat fields is also a worldwide problem. According to statistics, due to the harm of weeds, the yield of wheat is generally reduced by 10-15%, and the severe one reaches more than 20%. In recent years, with the adjustment of the planting industry structure and the change of the farming system, the population change and community succession o...

AI Technical Summary

Problems solved by technology

It can be used to control a variety of gramineous weeds in wheat fields, such as kangaroo, wild oats, clubhead grass, bluegrass, hard grass, soda grass, ryegrass multiflora, poisonous wheat, brome, candle grass, barley, Rush, but less effective against broadleaf weeds

In addition, when Mesulfuron-methyl is used as a single dose in the wheat field, the dosage is relatively high under the premise of ensuring the efficacy, and there is a hidden danger of phytotoxicity.

[0005] The herbicide compositions and applications containing disulfuron-methyl have been reported in the literature. For example, Chinese patent CN103004840 discloses a compound pesticide composition containing disulfuron-methyl and metazafen and its preparation. CN102379302 discloses A postemergence compound herbicide for wheat, which contains two active ingredients, disulfuron-methyl and florasulam, but there is no literature record about the combination of disulfuron-methyl and Pyrasulfotole

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