Parameters

Parabola

K^os

a

b

c

R²

Ks = b

SAR

5 meq salts/l

0

11.6

0.424

10.35

−0.488

0.999

10.35

5

8.5

0.329

7.416

−0.521

0.996

7.416

10

6.5

0.135

5.888

−0.341

0.995

5.888

30

4.08

0.05

3.78

−0.178

0.995

3.78

50

2.75

0.082

2.459

−0.152

0.997

2.459

∞

1.3

0.059

1.119

−0.068

0.997

1.119

Regression for the relation K^os vs b is Y = 0.886x + 0.0404; R² = 0.9991

SAR

50 meq salts/l

0

21.43

0.206

20.629

−0.390

1.0

20.629

5

13.36

0.125

12.717

−0.394

0.999

12.717

10

8.852

0.196

8.054

−0.429

0.997

8.054

30

6.617

0.212

5.922

−0.315

0.998

5.922

50

4.799

0.138

4.302

−0.249

0.997

4.302

∞

2.747

0.034

2.554

−0.095

0.996

2.554

Regression for the relation K^os vs b is Y = 0.9769x − 0.3821; R² = 0.9994