Mesotrione water suspending agent as well as preparation method and application thereof

Abstract

The invention relates to a mesotrione water suspending agent as well as a preparation method and application thereof, the water suspending agent comprises the following components in percentage by weight: 10-40% of a mesotrione active compound, 1-6% of a wetting dispersant, 0.5-5% of a thickening agent, 0.1-0.5% of a defoaming agent, 2-6% of an antifreezing agent, 0.1-1% of a preservative, 0.1-0.3% of a pH regulator, 0.1-1% of a spray additive and the balance of deionized water, and the total mass percent is 100%. Compared with the prior art, a novel auxiliary agent system is adopted, volatilization drift loss of mesotrione in the unmanned aerial vehicle spraying process is reduced, pesticide utilization efficiency can be improved, environmental pollution is reduced, the unmanned aerial vehicle spraying technology is combined, and the aviation application type efficient and environment-friendly mesotrione water suspending agent is high in wettability. The mesotrione water suspending agent can significantly enhance the adhesive force on plant leaves, and is an efficient and green aviation application type mesotrione water suspending agent.

Description

[0001] This application is a divisional application with an application date of November 29, 2017, an application number of 201711227823.8, and an invention title of "An Aqueous Suspension Concentrate of Mesotrione for Aviation Application and Its Preparation Method". technical field [0002] The invention belongs to the field of pesticide preparations, and in particular relates to a mesotrione aqueous suspension and a preparation method and application thereof. Background technique [0003] Mesotrione (mesotrione), also known as "Mesotrione", is a new triketone herbicide with contact and specific effects, mainly by inhibiting the expression of hydroxyphenylpyruvate dioxygenase in plants. It has herbicidal activity and can effectively control broad-leaved grasses and some grass weeds. Mesotrione is easy to conduct in the xylem and phloem of plants, has contact killing effect and specific effect, and its biological activity is 10 times higher than that of sulcotrione. [000...

AI Technical Summary

Problems solved by technology

Pesticide spray auxiliaries are classified according to chemical composition, mainly including mineral oil, surfactant, vegetable oil, silicone, etc. Mineral oil spray adjuvant can promote the penetration of herbicides in the waxy layer of plant leaves and insect body surface Absorption, but the selectivity to some crops is poor, and the environmental conditions are strict when used. In addition, mineral oil is a petroleum product, and the source of raw materials is limited; organic silicon additives can effectively reduce the surface tension of the solution, and can greatly promote the diffusion of the drug. However, this additive is very sensitive to the pH value of the aqueous solution, and it is very easy to polycondense and lose its effect when pH9. Therefore, due to stability problems, the application range of silicone additives is narrow; vegetable oil spray aids The agent can increase the viscosity of the liquid medicine and has strong permeability. There are many commercial vegetable oil spray auxiliaries, but the price is more expensive

[0006] At present, mesotrione pesticides have the problems of poor dispersion stability, Oswald ripening and easy water bottoming. When using drones to spray pesticides, they are prone to sedimentation and aggregation, clogging nozzles and not being able to effectively adhere to plant surfaces.

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