EFFECT OF NAA AND GA3 ON GROWTH AND YIELD OF TOMATO

Abstract

The experiment was conducted in the Horticultural Farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period November, 2015 to April, 2016 to find out the effect of different levels of NAA and GA on growth and yield of tomato. The experiment consisted of two factors: Factor A: Three levels of NAA viz. N 3 0 : 0 (control), N : 25 ppm NAA and N 2 : 50 ppm NAA. Factor B: Four levels of GA 3 viz. G 0 1 : control (no GA ); G 1 : 50 ppm GA 3 ; G 2 : 100 ppm GA 3 and G 3 : 150 ppm GA . There were 12 treatment combinations. The experiment was laid out in Randomized Complete Block Design with three replications. Due to the application of NAA, the longest plant (97.75 cm at 60 DAT), the maximum dry matter of fruit (13.98%) and the highest yield (78.80 t ha -1 3 ) and yield contributing characters were recorded from N 2 . For the application of GA , the longest plant (88.88 cm at 60 DAT), the maximum dry matter of fruit (13.35%) and the highest yield (68.64 t ha -1 3 ) and other yield contributing parameters were recorded from G . The treatment combination of N 2 G 2 performs the highest yield (84.13 t ha ). So the combination of 50 ppm NAA with 100 ppm GA treatment is the suitable combination for the better growth and yield of tomato.