Phosphorus Application on Grain Yield, Uptake and P Utilization Efficiency of Mungbean (Vigna radiata L.)
Phosphorus Application on Grain Yield, Uptake and P Utilization Efficiency of Mungbean (Vigna radiata L.)
Ambrin Rajput1* and Mehrunisa Memon2
ABSTRACT
Mungbean represents second largest crop after chickpea which mostly grow without nutrients. Among leguminous pulse food grain, phosphorus application shows an important part in enhancing plant productivity of the crop. Keeping in view the role of plant nutrition, research trial was led to determine various rates of P 0, 25, 38, 50, 75, 100, 125, 150 P2O5 kg ha -1 on yield, uptake, P utilization efficiency of Mungbean. For this, randomized complete block design was arranged with three times. The outcome showed that Phosphorus application 50 kgha-1 P2O5 with nitrogen (N), and potassium (K) (15 kg ha-1 N and K2O) had significant effect on mungbean growth parameters, 75 kg ha-1 P2O5 gave highest result of yield related parameters. The maximum plant height (70 cm), number of plant/ treatment (82), number of fruits bearing branches (23), number of pods plant-1 (88), 1000 grain weight (45.3 g), biomass yield (2478 kg ha-1), yield of grain (2986 kg ha-1), yield of straw (509 kg ha-1), protein (22%), leaves P (0.46 %) content, P uptake (11.49 kg ha-1) and P utilization efficiency (10.3 %) were noted by P application with N and K applied treatment. However, the lowest values were recorded where no P was applied. The highest yield had 100% increase in mungbean yield with combined nutrient application of N:P: K (15:75:15 kg ha-1) compared the control plot through this study. Increasing the P application levels from 100 to 150 P2O5 kg ha-1 with N and K application (both 15 kg ha-1) did not express any vital outcome on yield and yield contributing parameters. It is recommended that P application is essential for mungbean; however, further studies may be conducted on various types of soil. The relationship was found positive among all yield parameters. Hereafter, it was suggested that P application with N and K mineral are important for mungbean growth and production enhancement.
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