Register      Login
Soil Research Soil Research Society
Soil, land care and environmental research
RESEARCH ARTICLE

Phosphorus sorption in relation to soil properties for the major soil types of South-Western Australia

B Singh and RJ Gilkes

Australian Journal of Soil Research 29(5) 603 - 618
Published: 1991

Abstract

The P sorption characteristics of 97 soils that are representative of the agricultural areas of Western Australia were described using Langmuir and Freundlich equations. The Langmuir P maximum (xm) ranged from 11 to 2132 µg g-1 soil and the Freundlich k coefficient ranged from 1 to 1681. Clay content, DCB Fe and Al, oxalate Fe and AL, and pyrophosphate Al were positively related to xm and k. By using stepwise regression analysis, the combination of DCB and oxalate-soluble A1 predicted more than 75% Of the variation in the P sorption coefficients. Reactive Al compounds may thus be responsible for much of the P sorption by these soils. Soil pH in 1 M NaF (pH 8.2), which is normally used for the detection of allophanic material, was strongly related to the P sorption coefficients and might therefore be used as a quick test for predicting the P sorption capacity of soils.

Keywords: Phosphorus Sorption; Sesquioxides; Sodium Fluoride; pH;

https://doi.org/10.1071/SR9910603

© CSIRO 1991

Committee on Publication Ethics


Rent Article (via Deepdyve) Export Citation Cited By (90) Get Permission

View Dimensions