Effect of rhizobium and molybdenum inoculation on yield, economics, nodulation and nitrogen uptake in mungbean (Vigna radiata L.)

Abstract

The study was carried out through front line demonstrations during rabi seasons of 2015-16 and 2016-17 to study the effect of Rhizobium and molybdenom inoculation on yield, economics, nodulation and nitrogen uptake in mungbean. The demonstration results showed that the improved practice of seed inoculation with Rhizobium and molybdenom recorded 41.6 % higher seed yield (9.82 q ha-1), harvest index (29.74 %), production efficiency(15.11 kg ha-1 day-1) and extension gap(2.89 q ha-1) than farmer’s practice. The same also produced higher plant height (47.0 cm), branches plant-1(6.0), pods plant-1(26.95), seeds pod-1(9.47), nodules plant-1 (13.06) and nodule dry weight (2.32 mg plant-1) with a mean increase of nitrogen uptake 62.1% and 39.2 % by seed and stover respectively. The improved practice also recorded higher gross return of Rs.50070.75 ha-1, B: C ratio (2.55), profitability (Rs.83.33 ha-1 day-1) with additional net return of Rs.13102.63 ha-1 and can effectively replace the farmer’s practice for higher yield, income, nodulation and nitrogen uptake in mungbean.