Twelve Vertisol profiles, occurring in the Command of Tungabhadra Left Bank Canal, were investigated for distribution pattern of various forms of inorganic phosphorus and available P Status. Total inorganic P in the soils varied from 137.6 to 292.8 ppm and the relative abundance of its forms followed the order: saloid P < Fe-P < occluded P<A1-P <Red-P <Ca-P. The dominance of Ca-p appeared to be related to Ca- salts other than CaCo₃, since Ca-p was negatively correlated with CaC03. Aluminium P and Ca-P were found to be controlling available P which, being generally medium in supply, was not affected much by soil properties, except pH and organic carbon. The effect of electrical conductivity or exchangeable-Na on P availability was not pronounced.