EFFECT OF PHOSPHORUS AND POTASSIUM ON GROWTH FLOWERING AND BULB YIELD OF TUBEROSE

Abstract

The experiment was conducted at the Horticultural farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, during the period from April, 2009 to March, 2010 to investigate the effect phosphorus and potassium on growth, flowering and bulb yield of tuberose. The experiment consisted of two factors. Factor A: Four levels of phosphorus i.e. P 0 : 0, P 1 : 135, P 2 : 145 and P : 155 kg P 2 O 5 /ha and Factor B: Four levels of potassium i.e. K 0 : 0, K 1 : 170, K : 180 and K 3 : 190 kg K 2 O/ha respectively. The experiment was laid out with Randomized Complete Block Design with three replications. In case of Phosphorus, the highest flower (19.25 t/ha) and bulb (24.66 t/ha) yield was recorded from P and the lowest flower (9.60 t/ha) and bulb (14.51 t/ha) yield was recorded from P In case of Potassium, the highest flower (16.39 t/ha) and bulb (21.99 t/ha) yield was noted from K and the lowest flower (11.48 t/ha) and bulb (17.17 t/ha) yield was recorded from K 3 For combined effect the highest flower (22.27 t/ha) and bulb (27.57 t/ha) yield was noted from P 0. 3 K and the lowest flower (6.94 t/ha) and bulb (12.22 t/ha) yield was recorded from P 3 0 K So, it may be concluded that 155 kg P 2 O 5 /ha with 190 kg K 2 0. O/ha was found suitable for growth, flowering and bulb yield of tuberose.