
%0 Journal Article
%A Ozanne, PG 
%A Shaw, TC 
%T Phosphate sorption by soils as a measure of the phosphate requirement for pasture growth
%J Australian Journal of Agricultural Research
%D 1967/08/01
%V 18
%N 4
%P 601-612
%K 
%R https://doi.org/10.1071/AR9670601
%U https://www.publish.csiro.au/paper/AR9670601 
%X Development of a laboratory method for predicting the phosphate requirements of pasture plants, in pounds phosphorus per acre, is described. Measurement of the phosphate sorption by soil at a standard equilibrium concentration was used. Predictions made by using this method in the following year on different soils accounted for over 85&#37; of the variability in phosphate requirement. A good correlation between phosphate sorbed and phosphate required was found. The relationship was linear over the range 0&ndash;500 p.p.m. of sorbed P. While different sampling depths, equilibrium concentrations, and degree of soil mixing affected the relationship, it remained linear and the correlation coefficients close to 0.9. 
