EFFECT OF NAA AND PHOSPHORUS ON GROWTH AND YIELD OF OKRA

Abstract

An experiment was conducted to evaluate the response of different levels of naphthalene acetic acid and phosphorus on growth and yield of okra, at Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from March to July, 2015. BARI Dherosh-1 was used as test crop in this experiment. The experiment consisted of two factors viz., Naphthalene Acetic Acid (4 levels) as N 0 : 0 ppm, N 1 : 50 ppm, N 2 : 100 ppm and N : 150 ppm NAA; and Phosphorus fertilizer (3 levels) as P 0 : 0 kg P 2 O 5 ha -1 , P 1 3 : 50 kg P

and P 2 : 70 kg P 2 O 5 ha -1 respectively. The experiment was laid out in Randomized Complete Block Design with three replications. Due to the effect of naphthalene acetic acid, the highest yield (15.31 t/ha) was recorded from N and the lowest yield (9.51 t/ha) from N . In case of phosphorus, the highest yield (14.20 t/ha) was found from P 2 0 and the lowest yield (12.12 t/ha) from P . For combined effect, the highest yield (16.25t/ha) was found from N and the lowest yield from N 0 P 0 (8.54 t/ha). So, 100 ppm NAA and 70 kg P was best for growth and yield of okra.