An experiment was carried out at the Agronomy Research Farm, The University of Agriculture, Peshawar during summer season 2019 to study the effect of molybdenum seed priming (un-primed, water primed, 93 186 and 279 mg M0 L^-1) and salicylic acid foliar spray (0, 100, 200 and 300 mg L^-1) on yield of mungbean. Randomized complete block design was used consisted of three replications. Sodium molybdate was used as source of molybdenum seed priming while salicylic acid foliar sprays were used after one month of sowing. Findings of the experiment depicted that seed priming with molybdenum @ 279 mg L^-1 significantly enhanced nodules plant^-1 (24), seed yield (783 kg ha^-1), soil N content (0.073%) and grain N content (3.5%). Higher 1000 grains weight (35 g), HI (25%) and proline content (0.670 μg g^-1 frsh weight). Salicylic acid foliar spray @ of 200 mg L^-1 significantly improved biological yield (2852 kg ha^-1) and grain yield (726 kg ha^-1). Maximum nodules plant^-1 (20), 1000 grains weight (35.3 g), soil N content (0.068%) and seed N content (3.0%) were sustained by plants sprayed at the rate of 200 mg L^-1 of salicylic acid and statistically similar to foliar application of salicylic acid @ of 300 mg L^-1. Maximum H₂O₂ (0.896 nmol g^-1 fresh weight) was reported with molybdenum applied @ of 93 mg L^-1 and salicylic acid spray @100 mg L^-1 depicted maximum (1.03 nmol g^-1 fresh weight) H₂O₂. Harvest index (25%) was recorded at the rate of 300 mg L^-1 salicylic acid foliar application. It is concluded that mungbean seeds priming with molybdenum @ 279 mg L^-1 and salicylic acid foliar application @ 200 mg L^-1 attained maximum seed yield and therefore recommended for the studied area.

Index Terms- Salicylic acid, Molybdenum, Proline content, Hydrogen peroxide and crude protein