Beneficial Effect of Taba® (Gibberellic Acid 0.001% L) A Liquid Growth Promoter and Chemical Fertilizers on Morphological and Yield Contributing Characters in Soybean (Glycine max L. Merril) Under Rainfed Conditions

Abstract

Soybean (Glycine max L. Merrill) is one of the most important oilseed crop in the world accounting for more than 50% of oilseeds produced and 30% of the total supply of all vegetable oils. Nutrient management is one of the most important factors in successful cultivation of crops. The productivity of soybean in India is very low (1228 kg/ha) as compare to the world’s average productivity (2509 kg/ha). Hence, an experiment was conducted to study the effect of TABA® (Gibberellic acid 0.001% L) on soybean yield in rainfed conditions. TABA® 0.5, 1.0, 200 ml/L along with 100% RDF and 75% RDF were evaluated at Dr. PDKV, Akola (Amravati). Results compiled indicated that two applications of TABA® @ 2.0 ml/L along with RDF significantly increase no. of branches/plant (62.93), yield/plant (76.47%), 100 seed weight (13.28%), straw yield (60.84%), and yield by 57.80% over control and 27.67% over RDF. Similarly, TABA® along with 75% RDF can help to increase yield upto 34.70% over control and 8.98% over RDF. Hence, we can save 25% fertilizer dose for soybean crop for getting yield upto RDF. Similarly, spraying of TABA® did not show any phytotoxic effect on soybean crop.