Weeding composition containing penoxsulam and bensulfuron-methyl

Abstract

The invention discloses a weeding composition containing penoxsulam and bensulfuron-methyl, which comprises active ingredient a and active ingredient b, wherein the active ingredient a is penoxsulam, the active ingredient b is bensulfuron-methyl, the weight ratio of the a to the b is 1-90:90-1; preferably, the weight ratio of the a to the b is 1-50:50-1, and particularly preferred, the weight ratio of the a to the b is 1-10:10-1. The active ingredients of the composition account for 8 to 95 percent of the total weight of the composition, and the balance is agriculturally acceptable pesticide adjuvant.

Description

technical field [0001] The invention belongs to the field of agricultural plant protection, and relates to a herbicidal composition with improved performance, especially a herbicidal composition containing penoxsulam and bensulfuron-methyl. Background technique [0002] In recent years, the variety of herbicides used in rice fields has developed rapidly, and the varieties have been continuously improved and perfected. Herbicides such as diphenyl ethers, thiocarbamates, amides, quinoline carboxylic acids, and sulfonylureas have emerged successively, forming A relatively complete chemical herbicide system adapted to different rice cultivation methods has become an indispensable and very important yield-increasing measure in the world's rice production. However, with the continuous use of many herbicide varieties in large areas of rice fields, there will inevitably be some problems that need to be faced and should be solved seriously: mainly the outstanding resistance of weeds,...

AI Technical Summary

Problems solved by technology

However, with the continuous use of many herbicide varieties in large areas of rice fields, there will inevitably be some problems that need to be faced and should be solved seriously: mainly the outstanding resistance of weeds, among which barnyardgrass is effective against propanil and dichloroquine. acid, butachlor, and carbad are more resistant. Recently, common weeds such as Cyperaceae, Cyperaceae, Alismaceae and other common weeds The resistance to sulfonylurea herbicides has made the weeding problem more complicated; the damage of perennial weeds has become an important problem, especially the perennial weeds of Cyperaceae; the control problems of old barnyardgrass and daughter chinensis need to be solved; The herbicide spectrum of herbicide species needs to be expanded and the durability of soil control agents should be extended

[0003] Bensulfuron-methyl belongs to the traditional sulfonylurea herbicides. It is a selective systemic herbicide for paddy fields. It can effectively control annual and perennial broad-leaved weeds and sedges. It can be absorbed and transmitted by weed roots and leaves. to other parts, but rice fields such as Cyperaceae and Alismaceae have developed some resistance to the herbicide during long-term use, and the efficacy of the herbicide has decreased

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