Response of different sources and levels of phosphorus on yield, nutrient uptake and net returns on mungbean under rainfed condition

Abstract

The results of the study indicated the application of phosphorus upto 40 kg P2O5 ha-1 recorded significantly higher number of pods per plant, number of seeds per pod, number of total and effective root nodules, test weight, seed and straw yield, nitrogen, phosphorus and potassium content in seed and straw and their uptake, protein content in seed and net return as compared to absolute control and 20 kg P2O5 ha-1 but was at par with 60 kg P2O5 ha-1. Application of different sources of phosphorus led to significant effect on seed yield. PROM (Phosphorus Rich Organic Manure) (8.36) was significantly superior in increasing the seed yield by 17.74 and 12.21 per cent, respectively, as compared to DAP (7.10) and SSP (7.45). However, both DAP and SSP being at par with each other. Application of phosphorus @ 40 (7.98) and 60 kg P2O5 ha-1 (8.44) significantly increased the seed yield by 22.95 and 30.04 per cent, respectively as compared to 20 kg P2O5 ha-1 (6.49). However, both 40 and 60 kg P2O5 ha-1 were at par with each other in increasing seed yield. The highest net return (Rs. 14865) was obtained with application of 40 kg P2O5 ha-1 over absolute control and 20 kg P2O5 ha-1 and phosphorus fertilization with PROMfetched the highest net return (Rs. 14736 ha-1) which was significantly higher over DAP and SSP.