Nicosulfuron terbuthylazine compound weedicide for corn field

Abstract

The invention relates to a nicosulfuron terbuthylazine compound corn field herbicide, which comprises the following weight percentage: 70-80 percent of the invention is the nicosulfuron and terbuthylazine active ingredient and the rest is an additive; wherein, the weight percentage of the nicosulfuron and terbuthylzine is 1:15-20. The invention adopts an additive solid carrier, a wetting agent and a dispersing agent, etc. commonly used in the pesticide field and can be made into compound herbicide in the form of wettable powder, water dispersible granule, dry suspension and oil suspension, etc. The invention has the advantages that the herbicide has significant synergistic action and can effectively prevent and remove the main gramineae weed and broad-leaved weed, etc. in corn field, meanwhile, total control effect is improved by 4.3-35.9 percent and control rate of the main broad-leaved weed in corn field is up to 100 percent in particular; safety on crop is improved and yield increase of the corn is up to 15 percent; the terbuthylazine which has smaller phytotoxicity on succeeding crop is adopted as compound agent and then phytotoxicity is reduced; control cost is reduced by 22.2 percent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a herbicide for cornfields, more specifically, it relates to a compounded herbicide for cornfields with nicosulfuron-terbuthyzine. Background technique [0002] At present, among the herbicides in cornfields, rimsulfuron-methyl (also known as rimsulfuron-methyl, Baocheng) and nicosulfuron-methyl are commonly used to control weeds in the sulfonylurea drugs, and rimsulfuron-methyl and nicosulfuron-methyl are mainly used It is used to control grassy weeds such as barnyardgrass, goosegrass, crabgrass, and foxtail in corn fields, broad-leaved weeds such as purslane, retroflexus, amaranthus, and Polygonum, and sedge weeds. Absorption and conduction is the principle of weeding, so the action cycle is long, the effect is slow, and the effect on weed removal is not good, and the sulfonylurea herbicide has strong selectivity, and the sensitivity to different crops is quite different, ...

AI Technical Summary

Problems solved by technology

Production practice has proved that the control effect has been improved to a certain extent through compounding, and the cost has been reduced, but the control effect is still unsatisfactory, and the residual effect of atrazine in the soil is relatively long. The residual amount is easy to damage the subsequent crops, resulting in different degrees of production reduction. The drug has been banned in the European Union

However, rimsulfuron-methyl only uses inter-row directional spraying. If the method is not used properly, crops are prone to phytotoxicity, and the control effect on weeds is not as good as that of nicosulfuron-methyl.

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