Treatment of powdery scab in potatoes

摘要

A method for reduction of powdery scab in potatoes, comprises applying to potato seed tubers immediately prior to planting and/or after harvesting, as active material, a zinc containing fungicide or a mixture of a zinc compound and a non-zinc containing fungicide. Preferred active materials are zinc ethylene-1,2-dithiocarbamate or a mixture of zinc oxide and manganese ethylene-1,2-bisdithiocarbamate.