Soil Type

Transformation

Calibration

Validation

$R_c^2$

RMSEC

$R_v^2$

RMSEV

RPIQ

Clay

Calcareous

R

0.123

1.775

0.011

1.707

0.369

CR

0.519

1.315

0.473

1.156

0.543

R'

0.417

1.448

0.195

2.114

0.611

R"

0.528

1.329

0.561

1.099

1.191

Neutral

R

0.038

5.307

0.228

5.415

0.121

CR

0.310

1.609

0.361

1.299

0.611

R'

0.510

1.305

0.475

1.168

1.360

R"

0.542

1.311

0.503

1.182

1.600

Acidic

R

0.541

1.437

0.515

1.260

1.052

CR

0.351

1.390

0.228

1.629

0.020

R'

0.707

1.407

0.710

1.075

1.560

R"

0.828

0.754

0.822

0.868

2.135

Sand

Calcareous

R

0.194

1.519

0.071

1.515

0.518

CR

0.605

1.063

0.650

0.939

1.185

R'

0.314

1.402

0.208

1.356

0.511

R"

0.660

0.962

0.682

0.932

1.526

Neutral

R

0.325

1.403

0.327

1.995

0.397

CR

0.414

1.340

0.610

1.683

0.842

R'

0.422

1.331

0.495

1.940

0.694

R"

0.555

1.167

0.649

1.721

1.113

Acidic

R

0.442

6.579

0.207

7.760

1.038

CR

0.353

7.081

0.283

7.170

1.164

R'

0.492

6.274

0.330

6.943

1.451

R"

0.729

4.583

0.675

4.772

1.871