Dimethomorph and pyraclostrobin compound suspending agent as well as preparation method thereof

Abstract

The invention relates to dimethomorph and pyraclostrobin compound suspending agent as well as a preparation method thereof, and relates to the technical field of the prevention and treatment of downy mildew of grapes and ornamental flowers. According to 1L of dimethomorph and pyraclostrobin compound suspending agent, the suspending agent is prepared from 320g of dimethomorph, 160g of pyraclostrobin, 30g of fatty alcohol-polyoxyethylene ether, 50g of styrylphenol polyoxyethylene ether, 5g of xanthan gum, 3g of sodium benzoate, 5g of defoaming agent and the balance of deionized water. All the raw materials are pumped into a preparation kettle to be mixed and stirred to obtain a mixture, then the mixture is primarily ground by virtue of a colloid mill and is finely ground by virtue of a sand mill, then the mixture is sampled and analyzed, and after the sample is qualified, a product is filtered, measured, packed and warehoused. When the 480g / L of dimethomorph and pyraclostrobin compound suspending agent is compounded in a compounding ratio of 2 to 1, the acting range can be obviously synergized; however, for other preparations in other compounding ratios, the synergism of the acting range cannot be achieved.

Description

technical field [0001] The invention relates to the technical field of downy mildew prevention and treatment of grapes and ornamental flowers, in particular to a dimethomorph and pyraclostrobin compound suspending agent and a preparation method thereof. Background technique [0002] Downy mildew is a plant disease caused by the Peronospora family in the fungus. It is an obligate parasite and is mainly transmitted through airflow, watering, farming and insects. The spore germination temperature of the fungus is 6-10°C, and the suitable temperature for infection is 15-17°C. It mainly damages peony, peony, rose, chrysanthemum and other flowers. It damages many varieties and infects a wide range, almost all over the country. Downy mildew generally begins to develop from the lower leaves. In the early stage of the disease, light green water-soaked spots are formed, and the edges of the spots are not obvious. Later, they develop into irregular yellow spots. dark gray. [0003] A...

AI Technical Summary

Problems solved by technology

For example, wettable powder is easy to cause product sticking, is not easy to disperse and suspend in water, or clogs the nozzle, and causes precipitation in the sprayer, resulting in uneven spraying

[0007] 3) The problem of compounding, through the toxicity test, heat storage stability test and the determination of the mixed co-toxicity coefficient of several specific proportions disclosed by the above-mentioned several fungicides, it was found that no obvious synergistic effect could be achieved

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