Abstract

Abstract Although grown by foliage growers for its colorful red leaves, Cordyline terminalis Kunth ‘Baby Doll’ often develops foliar necrosis during propagation. Propagating media had a pronounced influence on amount of necrosis, but soluble salts, pH, and cation exchange capacities of the media offered few clues for the variation. Necrosis was related to soluble soil fluoride. Addition of superphosphate containing 1.6% fluorine (F) increased leaf tissue F and tip necrosis, and both were reduced when media pH increased with liming amendments.

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