and Technology. To determine "Effect of phosphorus and plant growth regulators on growth and yield of Blackgram". The result revealed that treatment 8 [Phosphorus (50 kg/ha) + GA3 (10 ppm)] recorded significantly higher plant height (32.47 cm), higher plant dry weight (12.36 g), maximum number of pods/plant (17,01), maximum number of seeds/pod (7.53), higher seed yield (907.30 kg/ha) and higher stover yield (1890.50 kg/ha). Highest gross return (80146.00 INR/ha), net return (51442.30 INR/ha) and B:C ratio (1.79) was recorded in treatment 8 [Phosphorus (50 kg/ha) + GA3 (10 ppm)] was found to be productive as well as economically feasible.