Variable

% Carbon

pH

−0.276

Chloride mg/kg

0.126

Phosphorus mg/kg

−0.178

Magnesium ppm

−0.304

Sodium ppm

−0.061

Manganese ppm

−0.232

Iron ppm

−0.406

Potassium ppm

−0.012

Calcium ppm

−0.141

Aluminium ppm

0.274

Calcium cmol/kg

−0.136

Magnesium cmol/kg

−0.302

Potassium cmol/kg

−0.012

CEC cmol/kg

−0.254

% Nitrogen

0.263

% Sand

−0.066

% Clay

0.069

% Silt

0.027

% loss of ignition

0.104

% Organic matter

−0.145