Die Interpretation von K/Ca-Austauschkurven mit Hilfe einer einfachen GAPON-Gleichung

The interpretation of K/Ca exchange isotherms by a simple GAPON equation K/Ca exchange isotherms of various soils can be described by a GAPON equation, where the coefficients being fitted to the measured values by iteration. The resulting values for the “labile potassium” are very similar to those of exchangeable K, whereas only 5–25% of the cec is involved in the short-term K/Ca exchange.