Phosphorus Solubility in Calcareous Soils: I. Dicalcium Phosphate Activities in Equilibrium Solutions1
- C. V. Cole and
- S. R. Olsen2
A theoretical background for the study of P solubility behavior in calcareous soils has been developed. The mean activity of dicalcium phosphate is used to express P solubility. Calculation of this function corrects for differences in the pH values, Ca concentrations, and ionic strengths which are encountered when a number of soil solutions are compared. The validity of this approach is based on the observation that the ion product aCa++ × aHPO4= in various solutions in equilibrium with a given soil remains constant over a range of values of pH, Ca concentration, and ionic strength.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © .