A kind of herbicide composition and its application

Abstract

The invention relates to a weedicide composition and an application method thereof. The composition comprises an active component A and an active component B, wherein the weight ratio of the componentA to the component B is 1:100 to 1:1; the component A is selected from a compound as shown in the following general formula: (the formula is as shown in the description); and the component B is selected from glyphosate as well as salt or ester suitable for agricultural chemistry. The weedicide composition is particularly suitable for preventing and removing weed which has tolerance or resistanceon organophosphorus weedicide, particularly the glyphosate.

Description

technical field [0001] The invention belongs to the field of agricultural herbicides, and relates to a herbicide composition and its application. Background technique [0002] Patent WO2016095768 reports isoxazoline-containing uracil compounds as shown in general formula I: [0003] [0004] The compound of general formula I has good herbicidal activity, and can effectively control barnyardgrass, foxtail, heteromorphous sedge, water sedge, crabgrass, weed grass, velvetleaf, zinnia, retroflexus, purslane, Weeds of different leaf stages such as ears, black nightshade, cassia, wild watermelon seedlings, and wild soybeans can achieve good weeding effects at low doses. [0005] Glyphosate, English common name glyphosate, CA registration number: 1071-83-6, chemical name N-(phosphorylmethyl) glycine, N-(phosphorylmethyl) glycine, (PhosphonomethylImino Acetic Acid), molecular formula C3H8NO5P , molecular weight 169.09. [0006] Glyphosate was discovered by D.D. Baird in the Un...

AI Technical Summary

Problems solved by technology

[0007] The use of any herbicide has its limitations, and the following problems also exist in the use of organophosphorus herbicides, especially glyphosate: 1. Some weed populations are naturally resistant to glyphosate Medicinal properties, it needs higher dosage or more times of application to completely control, such as Convolvulaceae Convolvulus and Dawanhua, Equisetaceae quince, Amaranthus amaranthus, some leguminous weeds , ferns, weeds that propagate underground, bamboo and some shrubs, etc.; 2. The emergence of resistant weeds has brought great challenges to the use of glyphosate

At present, although there is no official report in my country that shows the emergence of glyphosate-resistant weeds, some weeds need to be controlled at high doses due to the continuous use of glyphosate in some areas, such as Small flyweed has become the dominant weed population in the cotton fields in the Yangtze River Basin. Goosegrass occurs widely in vegetable fields and orchards in Guangdong and Fujian. It is difficult to control with a single weed

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