were exchangeable Al (r = −0.836***), Mg (r = 0.789***), organic C (r = −0.703**), and P sorption
(r = −0.709**). Soil clay content was negatively correlated with individual exchangeable bases (P <
0.05) in contrast to the sand and silt fractions. Residual P and NaOH-Pi decreased with increasing sand
and silt fractions and increased with increasing size of the clay fraction (P