Field investigation was carried out at Experimental Farm at Annamalai University, to evaluate the various sources of nutrient management in irrigated cotton during the summer season of 2008. Application of 100% RDF + Pressmud @ 5 t ha-1 had registered the highest seed yield as compared to rest of the treatments. Number of bolls per plant and seed cotton yield (g ha-1) were recorded at maximum values under above mentioned treatment.
