GROWTH AND YIELD OF TOMATO AS INFLUENCED BY PLANT GROWTH REGULATORS

Abstract

An experiment was conducted at the Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka during the period from November 2013 to April 2014 to study the growth and yield of tomato as influenced by plant growth regulators. The experiment was laid out in a Randomized Complete Block Design with three replications and consisted of two factors, Factor A (3 Levels of IAA): I 0 = Control, I 1 = 25 ppm, I = 35 ppm IAA and Factor B (4 Levels of GA 3 ): G 0 = Control, G 1 respectively. In case of IAA, I 2 = 30 ppm, G 2 ii 2 = 60 ppm

and G 3 = 90 ppm GA treatment produced the highest yield (74.76 t/ha) and I 0 produced the lowest yield (58.69 t/ha). In case of GA produced the highest yield (76.45 t/ha) and G produced the lowest yield (53.30 t/ha). The treatment combination of I 2 G 2 0 produced the highest yield (85.42 t/ha) and I 0 G produced the lowest yield (47.25 t/ha). The highest (3.58) benefit cost ratio was recorded from I 0 2 G 2 . So, 35 ppm IAA with 60 ppm GA was found suitable for growth and yield of tomato.