Table 7 The OK (ordinary Kriging) applying results for this area.
Features | Spatial method | R 2 | RMSE | ME |
---|---|---|---|---|
pH | OK | 0.63** | 0.46 | 0.01 |
EC | OK | 0.43* | 0.74 | 0.04 |
CCE | OK | 0.79*** | 4.38 | −0.320 |
OC | OK | 0.64** | 0.42 | 0.014 |
Clay | OK | 0.82*** | 5.98 | 0.810 |
Silt | OK | 0.62** | 6.65 | −0.095 |
Sand | OK | 0.44* | 9.39 | 0.231 |
Soil depth | OK | 0.52* | 61.56 | −3.596 |
Gravel (%) | OK | 0.57* | 6.03 | −2.245 |