GROWTH AND YIELD OF TUBEROSE AS INFLUENCED BY GIBBERELLIC ACID AND POTASSIUM

Abstract

The experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from April, 2013 to March 2014. The experiment consisted of two factors. Factor A: Four levels of potassium i.e. K 0 : 0, K 1 : 125 K 2 : 145 and K 3 : 165 kg K O/ha and Factor B: three levels of GA 3 i.e. G 0 : 0. G 1 : 100 and G 2 : 200 ppm GA 2 respectively. The experiment was conducted in a Randomized Complete Block Design with three replications. The maximum number of spike In case of GA 3, 2 3 and lowest from K the maximum number of spike 2 and lowest from G . In respect of combined effect, K 2 G produced the maximum number of spike

0 G 0 2 . The maximum benefit cost ratio 2 G 2 and minimum from K 0 G So the present investigation indicates that, combined effect of 200 ppm GA 0. 3 with 145 kg K O/ha is suitable for growth, flowering, bulb and bulblets yield of tuberose. 2 0. 0