Nicosulfuron soluble granule and preparation method thereof

Abstract

The invention relates to a nicosulfuron soluble granule and a preparation method of the nicosulfuron soluble granule. The nicosulfuron soluble granule is prepared from the following components in percentage by weight: 1%-70% of nicosulfuron, 0.5%-30% of alkali compound, and the balance of agricultural preparation auxiliary elements. The preparation method for the nicosulfuron soluble granule comprises the steps of preparing the raw materials; uniformly mixing ethanol with penetrating agent for later use; crushing and mixing the raw materials; squeezing, pelleting, drying and sieving the raw materials. Due to the nicosulfuron soluble granule, the difficulty that a soluble granule is difficult to prepare as the nicosulfuron is difficult to solve in water is overcome. Compared with a dispersible oil suspension, the content of active ingredients is increased; the dosage in a unit area is reduced; a large quantity of packaging materials, transportation cost and storage space can be saved, no organic solvent is used; and the production cost is greatly lowered. Moreover, the prepared soluble granule has good water solubility, and is beneficial to bringing pesticide effects into play.

Description

Technical field [0001] The invention belongs to the technical field of agricultural herbicides, and specifically relates to a nicosulfuron soluble granule and a preparation method thereof. Background technique [0002] Nicosulfuron (nicosulfuron), also known as Yunongle; its chemical name is 2-(4,6-dimethoxypyrimidin-2-ylcarbamoylaminosulfonyl)-N,N-dimethyl Nicotinamide. Nicotinsulfuron is a systemic herbicide, which can be absorbed by weed stems, leaves and roots, and then transmitted in the plant body, causing the growth of sensitive plants to stagnate, stems and leaves chlorosis, and gradually wither. Generally, they die within 20-25 days. However, it takes a longer time to treat certain perennial weeds in low temperatures. The effect of applying pesticide before the 4 leaf stage after emergence is good, but the effect of applying pesticide decreases when the seedling is large. The drug has pre-emergence herbicidal activity, but its activity is lower than that after emergen...

AI Technical Summary

Problems solved by technology

This dosage form has problems such as low content of active ingredients, large dosage, high transportation cost, and a large amount of organic solvents, making the formulation cost relatively high.

Although wettable powder and water-dispersible granules can solve the above problems, due to the relatively backward processing equipment and uneven research and development levels, it is difficult to meet the technical requirements for the crushing fineness and granulation process, which affects the disintegration and suspension rate. and other indicators, reducing the efficacy of the product during use

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