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 |