Acid soils in South Sumatra have low availability of phosphorus. Currentstudy was a green house experiment investigating effect of soil ameliorants onpopulation of P-solubilizing bacteria (PSB), P availability and sweet com growth inUltisols. This experiment tested 8 treatments, i. e. untreated soil (control), PSBinoculation, Organic Matter application, Lime application, PSB + Organic Matter,PS…