Table 3.
Model evaluation under the effects of plant density and N fertilizer rates in Fogera Plain.
| Model evaluation | Crop characteristics | Sample numberr | Mean values |
Standard deviation (SD) |
RMSE | RMSEn (%) | D index | ||
|---|---|---|---|---|---|---|---|---|---|
| SIM | OBS | SIM | OBS | ||||||
| Calibration (2020) |
Top dry biomass yield (t ha−1) | 18 | 13.532 | 13.069 | 0.464 | 0.477 | 0.489 | 3.74 | 0.79 |
| By-product yield (t ha−1) | 18 | 9.400 | 9.139 | 0.390 | 0.437 | 0.307 | 3.36 | 0.87 | |
| LAI max | 18 | 3.60 | 3.41 | 0.002 | 0.003 | 0.280 | 8.24 | 0.63 | |
| Grain Yield (t ha−1) |
18 |
4.131 |
4.075 |
0.103 |
0.091 |
0.074 |
1.82 |
0.86 |
|
| Validation (2021) | Top dry biomass (t ha−1) | 18 | 16.182 | 15.541 | 0.516 | 0.469 | 0.678 | 4.36 | 0.67 |
| By-product yield (t ha−−1) | 18 | 11.812 | 11.854 | 0.423 | 0.461 | 0.690 | 0.58 | 0.99 | |
| LAI max | 18 | 6.14 | 5.41 | 0.001 | 0.002 | 0.750 | 13.92 | 0.74 | |
| Grain Yield (t ha−1) | 18 | 4.370 | 4.334 | 0.101 | 0.084 | 0.580 | 1.33 | 0.90 | |
Key: SIM = simulated, OBS = observed, and SD = standard deviation.