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Phosphorus Solubility in Calcareous Soils: II. Effects of Exchangeable Phosphorus and Soil Texture on Phosphorus Solubility
Author(s) -
Cole C. V.,
Olsen S. R.
Publication year - 1959
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1959.03615995002300020012x
Subject(s) - solubility , soil water , phosphorus , adsorption , chemistry , calcareous , phosphate , soil texture , phosphorite , monolayer , environmental chemistry , mineralogy , inorganic chemistry , soil science , geology , organic chemistry , biochemistry , paleontology
P solubility expressed as the mean activity of dicalcium phosphate in equilibrium solutions increases regularly with the amounts of P adsorbed in the monolayer region on the surfaces of various materials likely to be present in calcareous soils. Values of the mean activity of dicalcium phosphate in equilibrium soil solutions increased as a direct function of the amount of phosphate added as concentrated superphosphate. Differences in P solubility behavior between soils of varying texture are explained by measurements of the surface area and the capacity of the soils for monolayer adsorption of P.