EFFECT OF BULB SIZE AND POTASSIUM ON THE GROWTH FLOWER AND BULB PRODUCTION OF TUBEROSE

Abstract

An experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from May 2007 to April 2008, to study the effect of different sizes of bulb and potassium on the growth flower and bulb yield of tuberose. The experiment consisted with two factors, Factor A: three sizes of bulb viz, B1 : Small bulb (1.0 - 1.5 cm); B2: Medium bulb (1.6-2.0 cm) and B3 : Large bulb (2.1 -2.6 cm) in diameter respectively and Factor B: four levels of potassium viz., KO: 0 kg (control); K1 : 120 kg; K2: 140 kg and K3: 160 kgK2O/harespectively. The experiment was conducted in a Randomized Complcte Block Design with three replications. Bulb size and potassium fertilizer significantly influenced the growth and yield of tuberose. In case of bulb size, 13 3 gave the highest (8.8 tlha) yield and B1 gave the lowest (7.04 tlha). In case of potassium, K2 gave the highest yield (8.63 i/ha) and K 0 gave the lowest (7.30 t/ha). For combined effect 33K3 gave the highest (8.7101a) yield and B1 K0 gave the lowest (7.17 i/ha). So, large bulb size with 160 kg K20/11a was best for growth, tlower and bulb yield of tuberose.