Weeding composition containing dicarfentrazone, quinclorac and halosulfuron-methyl

Abstract

The invention discloses a weeding composition containing dicarfentrazone, quinclorac and halosulfuron-methyl. An active component is formed by the dicarfentrazone, the quinclorac and the halosulfuron-methyl; the weight ratio of the dicarfentrazone to the quinclorac to the halosulfuron-methyl is (1 to 20) to (20 to 150) to (2 to 30). The weeding composition disclosed by the invention has an obvious synergistic effect and is mainly used for preventing and treating weeds in a sorghum field; compared with independent use or binary compounding use of all single agents, the weeding composition disclosed by the invention has the advantages that the weeding effect is obviously enhanced, and the herbicide controlling spectrum is expanded; meanwhile, the use amount of pesticides is reduced, the environmental pollution is relieved, the generation of weed resistance is delayed, and the service life of the pesticides is prolonged.

Description

technical field [0001] The present invention relates to a pesticide herbicidal composition and its application field, in particular to a herbicidal composition with bisfentrazone, quinclorac and chlorpyrazosulfuron-methyl as active ingredients, which is mainly used for weed weeds in sorghum fields Prevention and treatment. Background technique [0002] There are many weeds in sorghum fields, broad-leaved weeds, gramineous weeds and sedge weeds are often mixed. At present, the herbicides used in sorghum fields mainly include atrazine, 2,4-D butyl ester, dichloroquinoline When these varieties are used alone, there are many problems such as single herbicidal spectrum, unsatisfactory control effect, poor safety to sorghum, etc. There is an urgent need for varieties with wider herbicidal spectrum, better effect and better safety in production. [0003] Bisfentrazone is a new compound of p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors. It mainly has good control effects on ...

AI Technical Summary

Problems solved by technology

[0002] There are many weeds in sorghum fields, broad-leaved weeds, gramineous weeds and sedge weeds are often mixed. At present, the herbicides used in sorghum fields mainly include atrazine, 2,4-D butyl ester, dichloroquinoline When these varieties are used alone, there are many problems such as single herbicidal spectrum, unsatisfactory control effect, poor safety to sorghum, etc. There is an urgent need for varieties with wider herbicidal spectrum, better effect and better safety in production

[0003] Bisfentrazone is a new compound of p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors. It mainly has good control effects on a variety of broad-leaved weeds in wheat fields and sorghum fields. Disadvantages such as single herbicidal spectrum and high cost of medication

[0004] Quinclorac is a hormone-type quinoline carboxylic acid herbicide, which can be absorbed by germinated seeds, roots and leaves, and has good control effect on grass weeds, broad-leaved weeds, Cyperaceae The control effect of weeds is poor, because the compound has been used for many years, some weeds have developed obvious resistance to it

[0005] Clopyrazosulfuron-methyl is a new type of sulfonylurea herbicide, the mechanism of action is an inhibitor of acetolactate synthase (ALS enzyme), and it is mainly used for controlling broad-leaved weeds and weeds in wheat, corn, rice, sugarcane, lawn and other places. Cyperaceae weeds less effective against grasses

[0006] After searching, it was found that the patent (application number: 201610147754.9) applied by Qingdao Qingyuan Compound Co., Ltd. disclosed the herbicidal composition compounded by bisfentrazone, quinclorac, and clopyrazosulfuron respectively. However, we passed many times The test found that although the compound composition of bisfentrazone and quinclorac has good control effect on some broad-leaved weeds and gramineous weeds in sorghum fields, its control effect on Cyperaceae weeds Poor; the compound composition of bisfentrazone and pyrazosulfuron-methyl has good control effect on some broad-leaved weeds and sedge weeds in sorghum fields, but its control effect on gramineous weeds Difference

Obviously, the binary herbicidal composition compounded with quinclorac and chlorpyrazosulfuron-methyl, respectively, has certain defects in the control of weeds in sorghum fields, and cannot fully meet the control needs.

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