Soil group

Parameter

H+

Al3+

Ca2+

Mg2+

K+

Na+

Red soil

(n = 109)

H+

1

Al3+

0.219*

1

Ca2+

0.081

0.002

1

Mg2+

0.046

0.043

0.420**

1

K+

0.164

0.120

0.062

0.310**

1

Na+

0.104

0.019

0.364**

0.314**

−0.095

1

BSP

−0.074

−0.504**

0.668**

0.555**

0.170

0.455**

Yellow soil

(n = 45)

H+

1

Al3+

0.351**

1

Ca2+

0.073

0.028

1

Mg2+

−0.119

0.024

0.305*

1

K+

0.147

−0.007

0.222

0.079

1

Na+

−0.057

−0.149

0.408**

0.125

0.076

1

BSP

−0.221

−0.526**

0.598**

0.457**

0.300*

0.461**