Growth and Yield of Tomato As Influenced By Plant Growth Regulators

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): I0 = Control, I1 = 25 ppm, I2 = 35 ppm IAA and Factor B (4 Levels of GA3): G0 = Control, G1 = 30 ppm, G2 = 60 ppm and G3 = 90 ppm GA3 respectively. In case of IAA, I2 treatment produced the highest yield (74.76 t/ha) and I0 produced the lowest yield (58.69 t/ha). In case of GA3, G2 produced the highest yield (76.45 t/ha) and G0 produced the lowest yield (53.30 t/ha). The treatment combination of I2G2 produced the highest yield (85.42 t/ha) and I0G0 produced the lowest yield (47.25 t/ha). The highest (3.58) benefit cost ratio was recorded from I2G2. So, 35 ppm IAA with 60 ppm GA3 was found suitable for growth and yield of tomato.