EFFECT OF GIBBERELLIC ACID ON MORPHO- PHYSIOLOGICAL ATTRIBUTES AND YIELD OF OKRA

Abstract

The experiment was carried out in the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka at the period of March to July 2017 to find the growth and yield of okra as influenced by different concentration of gibberellic acid. Seeds of BARI Dherosh 1 and Hybrid Variety were used as planting materials. The experiment consisted of two varieties of okra at levels of GA 3 (5 levels) as- G 0

(control), G 1 : 50 ppm GA 3 , G 2 : 100 ppm GA 3 , G 3 : 0 ppm GA 3 : 150 ppm GA 3 : 200 ppm GA 3 . The two factorial experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. In case of variety, the tallest plant 28.66, 82.48 and 128.95 cm, respectively was from V 1

variety at 20, 40 and 60 DAS, respectively. Variety V 2 performed the maximum (18.38) number of pods and the highest pod yield (14.23 t ha ). On the other hand, at 20 DAS, the tallest plant (31.13 cm) was observed from G 3 (150 ppm GA 3 ) and at 40 and 60 DAS, the tallest plant (90.76 and 135.1 cm, respectively) was observed from G 2 (100 ppm GA 3 ) was contributed by G 2 maximum (19.52) number of pods and the highest pod yield (16.18 t ha . In The highest pod yield 14.23(t ha -1 ) was recorded from the application of 100ppm of GA 3 in Hybrid Variety followed by the yield of BARI Dherosh 1 14.01(t ha -1 ) with 100ppm of GA 3 at optimum harvest date. Both varieties increased the yield of okra at 100ppm. So, 100ppm GA 3

is suitable for okra production. and G 4 - 1 ). The - 1