Abstract
Growth of cabbage (Brasslca oleracea L.), cantaloupe (Cucumis melo L.), squash (Cucurbita pepo L.), chile pepper (Capsicum annuum L.), tomato (Lycopersicon esculentum Mill)., radish (Raphanus sativus L.), and Swiss chard (Beta vulgaris L.) was enhanced when supplied with additional Ca in the presence of NH4‐N over those with normal Ca. Ammonium uptake as measured by residual NH4 in soil leachate was lowered indicating possible increased uptake in the presence of additional Ca.