EFFECT OF PACLOBUTRAZOL, UNICONIZOLE, DAMINOZIDE AND FERTILIZER ON POTTED CHRYSANTHEMUMS.

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  • 1 Department of Agricultural Sciences, Tennessee State University, Nashville, Tennessee 37209-1561

Red Delano chrysanthemum cuttings were transplanted into 15 cm pots. Fertilizer treatments were started immediately. Initial fertilizer rates were 14.8 cc of the designated formulation per pot. Two formulations of fertilizer, 20-20-20 and 5-50-17 NPK, were used in excessive rates to determine if it would override the effects of the growth inhibitors. Paclobutrazol, uniconizole, and daminozide were used to retard growth. Three rates-30, 60, and 120 ppm of paclobutrazol, and 10, 20, and 40 ppm of uniconizole and one rate of 25 % daminozide were foliar applied (two applications) on the plants. After two weeks the plants were treated with the growth retardants and an additional treatment of fertilizer were added at the rate of 29.6 cc per pot. Measurements taken were plant height, top fresh weight, root fresh weight, and root development. ANOVA was used to determine differences and interactions. Significant differences were noted in plant height and root development.

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