Salt

Salinity levels (dS∙m−1)

Equation

1.03

2.5

4.0

5.5

7.0

pH

NaCl

5.04a

4.92a

4.90b

4.84b

5.00a

Y = 0.01x2 − 0.14 + 5.17 R2 = 0.8704*

NaCl + CaCl2

5.09a

5.04a

5.09a

5.03a

5.03a

Y = 5.06ns

EC

NaCl

1.02a

0.87a

0.88a

0.85a

0.67a

Y = −0.04x + 1.05 R2 = 0.8359**

NaCl + CaCl2

1.00a

0.85a

0.83a

0.66b

0.61a

Y = −0.06x + 1.05 R2 = 0.9594**

Na

NaCl

1.16a

1.23a

1.37a

1.13a

0.60a

Y = −0.05x2 + 0.32x + 0.83 R2 = 0.9554**

NaCl + CaCl2

1.12a

1.12a

0.78b

0.68b

0.61a

Y = −0.09x + 1.25 R2 = 0.8987**

Ca

NaCl

1.32a

1.61a

1.59a

1.68a

1.78a

Y = 0.06x + 1.33 R2 = 0.8282**

NaCl + CaCl2

1.34a

1.62a

1.53a

1.78a

1.93a

Y = 0.08x + 1.28 R2 = 0.8624**

P

NaCl

3.81b

3.83b

3.80b

3.83b

3.84a

Y = 0.004x + 3.807 R2 = 0.4756*

NaCl + CaCl2

3.89a

3.86a

3.87a

3.87a

3.83a

Y = −0.006x + 3.89 R2 = 0.6047**

H + Al

NaCl

1.11b

1.04a

0.95b

1.01b

1.15b

Y = 0.01x2 − 0.14x + 1.25 R2 = 0.9238*

NaCl + CaCl2

1.30a

1.23a

1.18a

1.35a

1.37a

Y = 1.29ns