Abstract

The effects of cadmium, chromium, copper, nickel, zinc, fluorine, arsenate, borate, and ammonium ion on sclerotia germination and formation and mycelial growth were investigated. Inorganic cations generally inhibited sclerotia formation more effectively than the anions examined; only ammonium ion was not inhibitory. Cadmium was the most effective inhibitor followed in order by zinc, copper, chromium, and nickel. Arsenate was not inhibitory. Only cations, at the concentrations examined, inhibited mycelial growth. Nickel, the least effective inhibitor of sclerotia formation, was the strongest inhibitor of radical mycelial growth and sclerotia germination. 19 references, 3 tables.

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