Effect of phosphorus activators on soil legacy phosphorus availability and its uptake by maize hybrid COH(M) 6 in calcareous soil

Continuous application of phosphatic fertilizers in association with its low recovery results the insoluble legacy P buildup agricultural soils. In this study, a field experiment was conducted maize hybrid COH(M) 6 to know effect different activators (Farmyard Manure, Humic acid, Phosphorus Solubilising Bacteria, and Phytase) on increasing phosphorus (P) availability. The were combined applied along doses fertilizer (100%, 75%, 50% soil test dose fertilizer). showed that Farmyard manure (FYM) acid (HA) significantly (p < 0.05) increased available (18.54 kg ha-1) notably reduced calcium fraction (93.08 mg kg-1). FYM HA 100% similar grain (9.98 stover uptake (12.67 response as 75% P. study suggested has activated fixed availability for crop utilization. findings have illustrated even can support nutrient if they are P- such HA. This could promote health by reducing overload further loss soil.