
TY  - JOUR
A1  - Bruce, RC 
A1  - Bruce, IJ 
T1  - Correlation of soil phosphorus analyses with response of tropical pastures to superphosphate on some north Queensland soils
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1972
VL  - 12
IS  - 55
SP  - 188
EP  - 194
KW  - 
UR  - https://doi.org/10.1071/EA9720188 
N2  - From the results of twenty-one field experiments dealing with the establishment of tropical pastures, correlations between per cent yield and soil phosphorus analyses showed significant relationships for the Kerr- von Stieglitz and Colwell methods but not for the Bray P2 method. To separate responsive and non responsive soils critical values of 17.5 p.p.m. P for the Kerr-von Stieglitz and 20 p.p.m. for Colwell methods are proposed. Correlations with the main Chang and Jackson soil phosphorus fractions are reported and discussed. 
ER  -

