Nitrogen Indices, Nodulation and Yield of Mung Bean (Vigna radiate L.) as Influenced by Integrated Nutrient Supply

Abstract

The present study was conducted to find out the impact of inorganic nutrients (Nitrogen @ 20 kgha-1 and Phosphorus 40 kgha-1) blended with and without biofertilizers (Rhizobium and PSB) on growth and yield of mung bean. Significant increments in seed yield of 31.07% followed by 23.34% were recorded from the plots exposed to 20 kgN/ha + 40 kgP2O5/ha along with dual inoculation by Rizobium and PSB (T9) and 20 kgN/ha + 40 kgP2O5/ha + Rizobium (T7). Highest seed yield (13.23 q/ha) realized under T9 supported by increased final aboveground dry matter (29.33% & 26.21%), pod percentage (26.33% & 17.45%) and test weight (17.50% & 11.13%) compared to chemical fertilizers (T4 & T5 respectively). Highest number of nodules (68.17) & nitrogen use efficiency (18.32 kg/kg) were recorded at flowering (50 DAS) stage of the crop under treatment-9. Functional relation between nodulation, NUE, AAR, pods plant-1 and yield were positive and linear (R2=0.987, 0.9987, 0.9501, 0.9115, respectively). To ascertain the higher productivity in mung bean it is recommended that the application of phosphorus @ 40 kgha-1 with starter dosage of N @ 20 kgha-1 along with dual inoculation by Rizobium and PSB should be applied for higher seed yield under temperate agro-ecological conditions.