Effect of Previous Fertilization on Phosphorus Adsorption. Measurement of Surface Phosphorus by Isotopic Exchange

Phosphorus sorption maxima and desorbability in selected soils with andic properties from the Azores, Portugal

“…Langmuir, Freundlich and Tempkin models are commonly used in the determination of P sorption capacity (Fitter and Sutton, 1973;Polyzopoulos et al, 1985;Kuo, 1988;Lopez et al, 1990;Pierzynski, 2000;Comfort and Eghball, 2002), while successive extractions with dilute calcium chloride (CaCl 2 ) are commonly used for the determination of P desorption capacity (McDowell and Sharpley, 2001). The modelling of P adsorption isotherms by the Langmuir equation is preferred to other models because it provides a value of P sorption maxima (Woodruff and Kamprath, 1965;Graetz and Nair, 2000).…”