A kind of mixed herbicide containing bentazone, acifluorfen and cyhalofop-ethyl and its application

Abstract

The invention belongs to the field of herbicides, and discloses a mixed herbicide containing bentazone, acifluorfen and cyhalofopbutyl and application thereof. The bentazone, the acifluorfen and the cyhalofopbutyl are used as main effective ingredients of the herbicide; the mass ratio of the bentazone, the acifluorfen and the cyhalofopbutyl is (0.1-80): (0.1-80): (0.1-80); and the total mass percentage composition of the bentazone, the acifluorfen and the cyhalofopbutyl in the herbicide is 1 to 85 percent. The mixed herbicide has remarkable effect on application of weeding in soybean field seedlings, particularly on application of preventing and weeding various gramineous or broadleaf weeds of soybean fields. Compared with a single agent, the herbicide delays the resistance of the weeds on the premise of improving the pesticide effect, and has wide weeding spectrum and long acting period; and the herbicide has safety on soybean and subsequent crops.

Description

technical field [0001] The invention belongs to the field of herbicides, and relates to a mixed herbicide containing bentazone, acifluorfen and cyhalofop-methyl and an application thereof. technical background [0002] Bentazone, also known as Paicaodan, Bentazon, chemical name: 3-isopropyl-(1H)-benzo-2,1,3-thiadiazin-4-one-2,2-dioxide , the structural formula is: [0003] [0004] The herbicide is a contact-type selective post-emergence herbicide, which is used for the treatment of stems and leaves at the seedling stage, and works through leaf contact. When used in dry fields, it first penetrates into the chloroplast through the leaf surface to inhibit photosynthesis. The use of paddy fields can not only penetrate through the leaves but also absorb through the roots, and then transmit to the stems and leaves, which strongly hinders the photosynthesis and water metabolism of weeds, causes nutrient starvation, and causes physiological dysfunction and death. The active i...

AI Technical Summary

Problems solved by technology

However, acifluorfen is ineffective against grass weeds and sedges, and has contact damage to rice. Therefore, the dosage should be strictly controlled during use, or mixed with other herbicides to reduce phytotoxicity and improve Control Efficacy of Grass Weeds

[0011] 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

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