Dicamba, nicosulfuron and mesotrione compound dispersible oil suspension concentrate and preparation method thereof

Abstract

The invention provides a dicamba, nicosulfuron and mesotrione compound dispersible oil suspension concentrate and a preparation method thereof, relating to the technical field of control of weeds in corn fields. The compound dispersible oil suspension concentrate is at least prepared from 10 parts of dicamba, 4 parts of nicosulfuron, 6 parts of mesotrione, 3 parts of fatty alcohol-polyoxyethylene ether, 5 parts of styrylphenol polyoxyethylene ether, 0.5 part of xanthan gum, 0.5 part of sodium benzoate, 0.5 part of defoaming agent and the balance of deionized water, wherein the total number of parts is 100. The preparation method is characterized by pumping the raw materials into a preparation kettle, mixing and stirring the raw materials, then carrying out primary milling with a colloid mill, then carrying out fine milling with a sand mill, carrying out sampling and analysis and carrying out filtering, metering, packaging and warehousing after the samples are qualified. The dicamba, nicosulfuron and mesotrione compound dispersible oil suspension concentrate has the beneficial effects that the 20% dicamba, nicosulfuron and mesotrione compound dispersible oil suspension concentrate prepared by mixing dicamba, nicosulfuron and mesotrione in a ratio of 10 to 4 to 6 can achieve obvious synergistic effects, but preparations prepared by mixing in other ratios can not achieve obvious synergistic effects.

Description

technical field [0001] The invention relates to the technical field of weed control in cornfields, in particular to a dicamba, nicosulfuron and mesotrione compound dispersible oil suspension and a preparation method thereof. Background technique [0002] At present, the existing herbicidal compositions for controlling weeds in corn fields such as barnyardgrass, crabgrass, foxtail and goosegrass, for example, Chinese patent "CN103957708A" discloses a "herbicidal composition", which contains an effective amount of herbicide Mesotrione and at least one second herbicide selected from the group consisting of nicosulfuron, dicamba, imazaquin, salts thereof and any combination thereof. Combinations of mesotrione and nicosulfuron, and combinations of mesotrione and dicamba are excluded. Another Chinese patent "CN104284587A" discloses a "herbicidal composition", which contains (a) nicosulfuron or its salt, (b) flusulfuron or its salt, and (c) selected from mesosulfuron At least one...

AI Technical Summary

Problems solved by technology

For example, the prepared dispersible oil suspension concentrate is easy to cause the product to stick, it is not easy to disperse and suspend in water, or to block the nozzle, and to settle in the sprayer, etc., resulting in uneven spraying and local phytotoxicity of the crops. There are different defects in the selection of additives and fillers

[0006] 3), compounding problem, by carrying out toxicity test, thermal storage stability test and co-toxicity coefficient measurement to the above-mentioned several specific proportions disclosed by several herbicidal compositions, it is found that no obvious synergistic effect can be achieved

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