PJB-2021-465
RESPONSE OF MUNGBEAN TO MOLYBDENUM SEED PRIMING AND SALICYLIC ACID FOLIAR SPRAY
Ikram Ullah
Abstract
An experiment was conducted at Agronomy Research Farm, The University of Agriculture, Peshawar during summer season 20l9 to study the impact of molybdenum seed priming (un-primed, water primed, 93 mg Mo L-1, 186 mg Mo L-1 and 279 mg Mo L-1) and salicylic acid foliar spray (0, 100 mg L-l, 200 mg L-l and 300 mg L-l) on yield of mungbean. The experiment was laid out in randomized complete block design having three replications. Plot size of 3 m x 2.4 m with 6 rows was maintained. Mungbean variety, Ramzan-92 was sown at the rate of 25 kg ha-l as on 1st July 2019. Sodium molybdate was used as source for molybdenum seed priming while salicylic acid foliar sprays were applied one month after sowing of mungbean. Experimental results revealed that molybdenum seed priming at the rate of 279 mg L-l significantly hastened number of nodules plant-l (24), number of pods plant-l (25), number of seeds pod-l (9), seed yield (783 kg ha-l), soil nitrogen content (0.073 %) and seed nitrogen content (3.5 %). Maximum thousand seeds weight (35.0 g) and harvest index (25 %) with minimum days to emergence (5), days to first flowering (46) and days to physiological maturity (76) were maintained in plots sown with seeds primed with 279 mg Mo L-l and were statically at par with seed treatment at the rate of 186 mg Mo L-l. Higher biological yield (2973 kg ha-l) was produced by seeds primed with 186 mg Mo L-l. Foliar spray of salicylic acid at the rate of 200 mg L-l on mungbean significantly enhanced number of pods plant-l (24), number of seeds pod-l (8), biological yield (2852 kg ha-l) and seed yield (726 kg ha-l). Higher number of nodules plant-l (20), plant height (76 cm), thousand seeds weight (35.3 g), soil nitrogen content (0.068 %) and seed nitrogen content (3.0 %) were sustained by plants sprayed with 200 mg salicylic acid L-l and were statically at par with the foliar spray of salicylic acid at the rate of 300 mg L-l. Higher harvest index (25%) with minimum days to first flowering (45) and days to physiological maturity (77) were recoded from plants sprayed with 300 mg salicylic acid L-l. Interactive effect of molybdenum and salicylic acid was found non-significant for all parameters except plant height and number of pods plant-l. It is concluded that mungbean seeds priming with 186 mg Mo L-l and salicylic acid foliar spray at the rate of 200 mg L-l retained higher seed yield and therefore recommended for the studied area.
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