Soils

properties

PCR

PLSR

Calibration

Validation

Calibration

Validation

R2

Bias

RMSE

R2

Bias

RMSE

R2

Bias

RMSE

R2

Bias

RMSE

C (%/100 g)

0.882

0.0004

0.22

0.17

0.0125

0.23

0.872

0.0004

0.21

0.29

0.0108

0.22

P (ppm)

0.884

0.0017

1

0.50

0.0709

1

0.881

0.0017

1

0.57

0.2023

0.95

K (meq/100 g)

0.877

0.0003

0.17

0.34

0.002

0.17

0.801

0.0003

0.15

0.42

0.009

0.16