Studies of Rainfasteness on some Fungicides and the effect of their Residual Deposits on Broad bean rust

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Date
1986
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National Veterinary Research Centre
Abstract
The effect of rain on Fungicide deposits was examined using two copper formulated Fungicides and leaf rust of Broad beans(Vicia Faba L.) as a model disease • Similar levels of Broad bean rust (Uromyces vicia Pers.)Control was achieved by the residual deposits of both the Cuprous OXide and Copper Sulphate compared to control after the originalcopper deposits were removed by various rain intensities. copper Sulphate (undiluted) applied at low volume was superior in 'fisease control, although Cuprous oxide was found to be more rainfast than the former compound. Copper Sulphate applied undiluted was found to be phytotoxic to Broad bean plants.
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