Abstract
SummaryCauliflower (Brassica oleracea L. var. botrytis L. cv. Pusi) grown in sand at different levels of potassium (0.2, 0.4, 0.8, 2.0 and 4.0 mM) supply showed best growth at 4 niM potassium. Plants grown below 4mM potassium showed stunted growth, a decrease in the leaf tissue concentration of potassium and developed visible symptoms, the severity of which decreased with increase in potassium supply. Old leaves showed larger variation in potassium concentration in relation to potassium supply. In old leaves 1% K represented the critical potassium concentration for potassium deficiency.
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