Influence of Biofertilizers and Gibberellic Acid on Growth and Yield of Blackgram (Vigna mungo L.)

A field experiment was conducted during Zaid season 2023 at CRF, (Crop Research Farm), Department of Agronomy, Naini Agricultural Institute, Sam Higginbottom University Agriculture, Technology and Sciences, Prayagraj 2023. The purpose this research is to study the Influence Biofertilizers Gibberellic acid on growth yield Blackgram. soil experimental plot sandy loam in texture, Basic reaction (pH 7.19), low organic carbon (0.54%), available N (286.93 kg/ha), P (21.67 K (157.12 kg/ha). treatments included PSB seed inoculation 10 20g/1kg seeds, Rhizobium seeds three levels foliar application (50,100 150ppm) control (20:40:20 NPK kg/ha) were used. laid out Randomized Block Design with ten each replicated thrice. As a result, Maximum plant height (36.03 cm), dry weight (6.72 g/plant), Crop rate (7.08 g/m2/day), Relative (0.056 g/g/day), Pod/plants (21.85), Seeds/pod (4.42),Seed (1.12 t/ha), Stover (2.03 t/ha) Test (34.89 g) Harvest index (35.63 %) recorded. Higher Gross returns (84179.17 Rs./ha),Net (57761.07 Rs./ha) Benefit Cost Ratio (2.19) obtained (PSB 10g/1kg 150ppm).