Summary
The Langmuir two-surface adsorption equation is used to derive a phosphate adsorption characteristic, the maximum buffer capacity, which integrates the intensive and extensive components of adsorption and is independent of P saturation. Changes in the intensities and quantities of labile P and equilibrium buffer capacities resulting from fertilization of a group of 24 soils are shown to be related to the Lamgmuir high-energy adsorption parameters and in particular the maximum buffer capacity.
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Holford, I.C.R., Mattingly, G.E.G. A model for the behaviour of labile phosphate in soil. Plant Soil 44, 219–229 (1976). https://doi.org/10.1007/BF00016969
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DOI: https://doi.org/10.1007/BF00016969