Influence Of Growing Environment And Growth Regulators On The Flowering Of Celosia (Celosia cristata L.)
Greenhouse and Field studies on the flowering of celosia as influenced by GA3 and IBA at 3 different concentrations were conducted at the Sinna Garden of the Crop Science Department, University of Ghana using the Carmine cultivar of Celosia cristata. The experimental design was a 2x7x8 factorial with 10 replications in experiment 1 and 8 replications in experiment 2. The concentrations were: GA3 (100ppm, 250ppm, 500ppm); IBA (1 Oppm, 50ppm, 100ppm) and Control (no application). Applications were carried out on 14, 18, 21, 25 days after potting-off (DAP) in both environments. The results indicated that field grown celosias resulted in early maturity, with IBA treated plants maturing earlier than GA in both environments. Intense flower colour development was observed among the greenhouse plants. Plants sprayed with GRs gave better flower yield and quality in terms of earliness to harvest, flower stem length, flower head fresh and (by weights. IBA at 50 ppm 14 or 18 DAP was the best concentration for the IBA treatment in the field whereas, IBA at 10 ppm 14 DAP was the most effective for greenhouse production. GA3 at 250 ppm 14, and 18 DAP for field and 14, 18 and 21 DAP for the greenhouse GA treatments gave the best results. GA3 and IBA treatments showed marked promotion of flowering.