Table 1: Selected soil chemical properties.

SoilSand %Organic matter g kg−1pH Total PMehlich-1 POxalate -extractable
PFeAl
mg kg−1

Millhopper95195.613395.758522229560.25

Phosphorus saturation index (PSI) = [P ÷ (Al + Fe)] with P, Fe, and Al concentrations expressed as mmol kg−1.