Doses of P (kg/ha)

Doses of Ca (kg/ha)

Doses of Mg (cmol/kg)

RDG correlation coefficients

DSP

Ca/Mg

Al

Fe

50

0

0

−0.57ns

0.21ns

−0.99ns

0.96ns

25

0.77ns

−0.80ns

−0.71ns

0.26ns

50

−0.32ns

0.23ns

−0.99*

0.99*

75

−0.26ns

0.26ns

−0.98ns

0.99**

25

0

0.19ns

0.68ns

−0.73ns

0.90ns

25

−0.23ns

0.35ns

−0.95ns

0.99**

50

−0.26ns

0.23ns

−0.97ns

0.99*

75

−0.32ns

0.22ns

−0.97ns

0.99ns

50

0

−0.29ns

0.28ns

−0.96ns

0.99*

25

0.84ns

0.95ns

0.26ns

0.16ns

50

0.01ns

0.34ns

−0.91ns

0.99*

75

−0.18ns

0.36ns

−0.88ns

0.99*

75

0

0.63ns

0.04ns

−0.97ns

0.99ns

25

0.89ns

−0.13ns

−0.74ns

0.98ns

50

0.62ns

−0.00ns

−0.94ns

0.98ns

75

0.36ns

0.12ns

−0.91ns

0.99ns