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

Theresultsof thestudyindicatedtheapplication ofphosphorus upto 40 kgP₂O₅ ha⁻¹ recorded significantlyhigher 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) wasobtained with application of40 kg P₂O₅ ha⁻¹ over absolutecontrol and20 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.