Abstract
Abstract Chlormequat (Cycocel, CCC) sprays and drench reduced plant height of poinsettias. Sprays of 5000 ppm were most effective with 25% reduction after 32 days followed by 3000 ppm - 18%, 1000 ppm - 17%, and 5000 ppm drench 12%. Appearance as indicated by chlorophyll analyses and chlorosis ratings was most seriously affected by sprays of 5000 ppm followed by 3000 ppm. The spray application of 1000 ppm and drench of 5000 ppm showed no deleterious effect to appearance. High fertilizer rates stimulated chlorophyll regeneration following spray applications of chlormequat partially overcoming the induced chlorosis. Nitrogen and K in leaf tissue increased in all treatments as fertilizer of that mixture was increased but P decreased.
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