Variable pH OM Exch.Al CEC  Clay      r    R2   U  pH  0.14** -0.064 0.039 0.006 -0.19  -0.61**  0.898** 0.101 OM -0.073 0.12** 0.003 -0.003 0.39  0.95**     Exch.Al -0.037 -0.003 -0.15** -0.01 0.15  -0.34     CEC -0.036 0.016 -0.07 -0.02 0.085  0.65**     Clay 0.035 -0.064 0.03 0.003 -0.72**  -0.82**

**Values are significant at p≤0.01

Table 4: Path coefficient analysis for direct effect of soil properties (diagonal and underliend) and indirect effect of other soil variable (off diagonal) on the p sorption energy (logkf) of Freundlich isotherm.