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Bio-Organic Influence on Phosphatic Fertilizers Under Wetland Rice Ecosystem in an Alfisol
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The efficiency of P fertilizers of varying water solubility was evaluated by comparing the grain yield, P uptake and economic returns. The results revealed that application of SSP @ 50 kg P2O5ha-1+ Azophos @ 2 kg ha-1+ FYM @ 12.5 tha-1 recorded the highest grain yield (4760 kg ha-1). Among the P sources, highest grain yield was recorded due to the application of SSP as compared to URP. Among the microorganisms inoculated, Azophos enhanced the rice yield followed by VAM and phosphobacteria. The B: C ratio was higher under SSP @ 50 kg P2O5 ha-1 + Azophos @ 2 kg ha-1. Though the B:C ratio was low in FYM treated plots, incorporation of FYM increased the grain yield and P uptake. For better dissolution of P, Azophos can be used as an efficient P solubilizer under low land ecosystem.
Keywords
Rice Yield, Phosphorus, P Solubilising Microorganisms, Phosphorus, Uptake, FYM.
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