A herbicide and an application thereof

Abstract

The invention belongs to the field of herbicides and relate to a herbicide containing azacyclo-substituted benzoyl compounds or stereoisomers thereof (shown as a general formula I-1) and an application of the herbicide. Compounds shown as the general formula I-1 are adopted as active components and mixed with carriers acceptable by pesticides. The weight percentage of the active components is 1-99%. The herbicide is safe to corn fields, low in using amount and low in cost, can effective control grassy weeds and broadleaf weeds in corn fields through post-seedling spraying treatment, and is an ideal herbicide for one-time control and removal of the grassy weeds and the broadleaf weeds in corn fields at present in China.

Description

technical field [0001] The invention belongs to the field of herbicides, and relates to a herbicide of a nitrogen-containing heterocyclic substituted benzoyl compound or a stereoisomer thereof (as shown in general formula I-1) and an application thereof. Background technique [0002] Corn is one of the main food crops in northern my country, and it is also an important feed crop. Its perennial planting area reaches 320 million mu. Grasses and broadleaf weeds. Because it is very seriously harmed by weeds, the affected area is more than 90%, and the yield is generally reduced by more than 20%. At present, the main pesticides used for post-emergence stem and leaf treatment of domestic corn fields are: Atrazine, Pendimethalin, Yu Nong Le, Shi Ta Long, Kuo Ye San, Mixing Di Nong, etc., because they have been used for many years, causing weeds to grow Drug resistance, resulting in an increase in dosage, causing recessive phytotoxicity in corn and reducing yield, and it is not saf...

AI Technical Summary

Problems solved by technology

At present, the main pesticides used for post-emergence stem and leaf treatment of domestic corn fields are: Atrazine, Pendimethalin, Yu Nong Le, Shi Ta Long, Kuo Ye San, Mixing Di Nong, etc., because they have been used for many years, causing weeds to grow Drug resistance, resulting in an increase in dosage, causing recessive phytotoxicity in corn and reducing yield, and it is not safe for subsequent crops

[0003] The PCT patent (WO2012065573A1) only generally mentions in the description that the herbicides of the active component benzoyl compounds (as shown in general formula I-1) can be processed into preparation emulsifiable concentrates, wettable powders, water dispersible granules, and suspension concentrates. But there is no specific biological activity measurement result, and the original drug is dissolved with acetone first, and then diluted with water containing 0.1% Tween 80 to the required concentration for spraying. On the one hand, it is inconvenient to use, unfriendly to the environment, and cost High, on the other hand, is not conducive to transportation and storage, so it is difficult to meet the needs of practical applications

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