Phosphorus use efficiency of Trititicum aestivum L. As affected by band placement of phosphorus and farmyard manure on calcareous soils

This study was conducted to explore the role of different phosphorus (p) levels and application methods in improving wheat grain yield,p uptake and phosphorus use efficiency (pue) on calcarious soils. five p levels viz.,0.0,27.0,47.0,81.0 and 111.0 kg p2o5 ha-1 (calculated using adsorption isotherms) and three application methods i.e.,broad casting,band placement and top dressing was included in the study. the experiment was conducted with and without fym application. band placement of p at 81 kg p2o5 ha-1 improved grain yield and yield components,grain protein contents,p uptake and pue with and without fym application. nonetheless,application of 111.0 kg p2o5 ha-1 resulted in maximum straw and grain p contents and uptake,grain protein contents,olsen p and pue of wheat. broad casting of p performed poor at all p levels. application of fym with p fertilizer improved wheat yield and pue as compared with fertilizer alone.