EFFECT OF FOLIAR APPLICATION OF POTASSIUM NITRATE AND SALICYLIC ACID ON PHYSIO-BIOCHEMICAL CHANGES ON MUNGBEAN (VIGNA RADIATA L.) UNDER SODIC SOIL

India during kharif season of the year 2022-23.The experiment was laid in randomized block designed with three replication and variety Shikha with seven treatments viz., T 1 -Control, T 2 -Potassium nitrate (100ppm), T 3 -Potassium nitrate (200ppm), T 4 -Potassium nitrate (400ppm), T 5 -Salicylic acid (50ppm), T 6 -Salicylic acid (100ppm), T 7 -Salicylic acid (150ppm), concentration and control set were also maintained.The potassium nitrate and salicylic acid were sprayed at 30 DAS of the crop.The observation was recorded at 45, 60 DAS and maturity of the crop.Result of field study indicated that, the growth parameters, biochemical changes, yield attributing traits and quality of mungbean were significantly increase due to foliar sprayed of salicylic acid and potassium nitrate.The foliar sprayed of salicylic acid 150ppm was found most effective for increasing the number of branches Plant -1 (5.45), plant height (54.23cm), total dry biomass Plant -1 (53.51g) and biochemical changes viz: chlorophyll content SPAD value (12.87), protein content (24.50%), nitrate reductase activity (265.45microgram/freshweight), RWC (92.84%), peroxidase content (72.82 g -1 fresh weight), proline (71.93 mg g -1 fresh weight), number of pods per cluster (9.97), number of pods per plant (39.77), number of seeds per pod (5.40), 100 seed weight (3.89g), seed yield per plant (6.70g), seed yield q/ha (21.30) and harvest index (56.90%)followed by foliar sprayed of potassium nitrate 400 ppm over rest of the treatments.However, growth parameters like plant height (54.23cm) was measured significantly increase due to foliar application of salicylic acid 150 ppm followed by foliar sprayed of potassium nitrate 400 ppm over other treatments including control.