Soil Type

Transformation

Calibration

Validation

$R_c^2$

RMSEC

$R_v^2$

RMSEV

RPIQ

Clay

Calcareous

R

0.123

1.775

0.011

1.708

0.366

CR

0.489

1.270

0.476

1.050

0.763

R'

0.502

1.287

0.165

2.868

0.707

R"

0.516

1.235

0.500

1.278

0.959

Neutral

R

0.034

1.900

0.014

1.531

0.257

CR

0.275

1.609

0.356

1.298

0.491

R'

0.521

1.257

0.414

1.233

1.349

R"

0.543

1.227

0.510

1.072

1.929

Acidic

R

0.530

1.437

0.513

1.262

1.049

CR

0.445

1.523

0.451

1.415

0.373

R'

0.719

1.097

0.728

1.036

1.735

R"

0.829

0.823

0.832

0.851

2.056

Sand

Calcareous

R

0.162

1.511

0.072

1.742

0.415

CR

0.579

1.029

0.584

0.905

1.666

R'

0.342

1.322

0.060

1.545

0.394

R"

0.670

0.911

0.630

0.966

1.714

Neutral

R

0.317

1.411

0.328

2.001

0.402

CR

0.380

1.342

0.609

1.686

0.233

R'

0.432

1.272

0.439

1.971

0.652

R"

0.558

1.120

0.658

1.874

1.030

Acidic

R

0.424

6.604

0.198

7.823

1.020

CR

0.338

7.082

0.283

7.170

1.162

R'

0.514

5.771

0.371

6.701

1.313

R"

0.736

4.251

0.744

4.290

2.440