The application of a surface complexation model to determine the effect of the pH and the phosphate concentration in the soil solution on the adsorption of phosphorus in two acric soils, was evaluated. Surface and subsurface samples were collected from two Oxisols of Ribeirão Preto and Guaíra, northern of the State of São Paulo, Brazil, in 1993. The samples were incubated with increasing amounts of calcium carbonate and hydrochloric acid to change the pH. The adsorption curves were obtained by […]