Download This PaperEffect of Spraying Frequency of Gibberellic Acid on Growth and Flowering in Gerbera
Journal of Experimental Biosciences 4(2): 7-10, 2013
4 Pages Posted: 6 May 2020
Date Written: 2013
Abstract
An experiment was conducted at Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to evaluate the effect of gibberellic acid (150-ppm GA3, G) on gerbera. Four treatments, namely G0; no spray of GA3 (Control), G1; one time spray of GA3 at 15 days after transplanting (DAT), G2: two times sprays of GA3 (at 15 and 30 DAT) and G3: three times sprays of GA3 (at 15, 30 and 45 DAT) were used in the present study. It was observed that G3 performed as the best treatment in terms of having significantly higher number of leaves plant-1 (58.7), plant height (50.5 cm), individual leaf area (35.8 cm2), chlorophyll content, number of flower plant-1 (16.3), peduncle length (36.1 cm), peduncle diameter (3.1 mm) and flower head diameter (7.4 cm). G3 also took the maximum days for the first flower bud initiation (83.8 days) while G0 took the minimum days (65.7 days). So, it was interpreted that three times spraying of GA3 caused delay in flowering ensuring proper vegetative growth for producing maximum flower production.
Keywords: Gerbera, repeated spray of GA3, growth and flowering
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