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Zinc Deficiency induced by Mercury in Coffea arabica K. R. BOCK, J. B. D. ROBINSON & G. T. CHAMBERLAIN Coffee Berry Disease Research Unit, Department of Agriculture, A ZINC deficiency has been induced in Coffea arabica trees in Kenya Colony as a result of spraying with fungicidal formulations containing mercury in organic combination. The symptoms were first observed in October 1957 on coffee trees which had been treated with certain mercurial sprays against coffee berry disease (Colletotrichum coffeanum Noack). © 1958 Nature Publishing Group Privacy Policy | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||