Pyraclostrobin and prochloraz compound emulsion in water and preparation method thereof

Abstract

The invention discloses a pyraclostrobin-prochloraz composite aqueous emulsion and a preparation method thereof, which relate to the technical field of citrus anthracnose prevention and control. At least 10 parts of pyraclostrobin, 30 parts of prochloraz, 2 parts of safener, 15 parts of xylene, 10 parts of alkylphenol fatty alcohol formaldehyde resin polyoxyethylene ether, 0.5 parts of hydrochloric acid, 4.5 parts of ethylene glycol, 1 part of sodium carboxymethyl starch, 0.1 part of simethicone and water up to 100 parts. Dissolve hydrochloric acid, ethylene glycol, and sodium carboxymethyl starch in water to form a water phase; dissolve pyraclostrobin and prochloraz in xylene, and add alkylphenol fatty alcohol formaldehyde resin polyoxyethylene ether , simethicone and safener form an oil phase; mix the oil phase and water phase in an emulsification tank. The 40% aqueous emulsion compounded in the ratio of 1:3 in the present invention can have obvious synergistic effects on the prevention and treatment of citrus anthracnose, while other preparations in mixed ratios cannot achieve obvious synergistic effects.

Description

technical field [0001] The invention relates to the technical field of prevention and treatment of citrus anthracnose, in particular to a compound aqueous emulsion of pyraclostrobin and prochloraz and a preparation method thereof. Background technique [0002] At present, the existing bactericidal composition for the prevention and treatment of citrus anthracnose, for example, Chinese patent "CN 1582659A" discloses a "fungicide pesticide and application for the prevention and treatment of crop downy mildew and anthracnose", using prochloraz or its salts and cymoxanil as the main effective components, prochloraz or prochloraz salt accounts for 1 to 90% of the weight of the pesticide, and the cymoxanil accounts for 1 to 90% of the weight of the pesticide, so The excipients mentioned above are the balance, and the weight percentage sum of the three is 100%. Another Chinese patent "CN103004823A" discloses a "compound bactericidal composition containing pyraclostrobin and bromot...

AI Technical Summary

Problems solved by technology

For example, the prepared 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, etc., resulting in uneven spraying and local phytotoxicity of crops. The main reason is that it helps There are different defects in the selection of agents and fillers

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

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