Table 4.
Statistical parameters of the comparison between simulated and observed data for the three varieties IR29, IR64 and BRRI Dhan 47 using the modified ORYZA v3 and APSIM-ORYZA model. R2, coefficient of determination; RMSEn, Root mean square error normalized by the mean of the observed measurements (as percentage).
| Model | Variety | Total above ground biomass (WAGT, kg/ha) |
Dry weight of organ storage (WSO, kg/ha) |
||||
|---|---|---|---|---|---|---|---|
| Slope | R2 | RMSEn (%) | Slope | R2 | RMSEn (%) | ||
| ORYZA V3 | IR29 | 0.81 | 0.84 | 25.7 | 1.05 | 0.87 | 22.1 |
| IR64 | 1.01 | 0.94 | 11.3 | 1.08 | 0.68 | 29.2 | |
| BRRI Dhan47 | 0.89 | 0.77 | 21.8 | 1.09 | 0.57 | 36.9 | |
| APSIM-ORYZA | IR29 | 1.11 | 0.86 | 21.1 | 1.11 | 0.55 | 43.1 |
| IR64 | 1.12 | 0.92 | 20.8 | 1.00 | 0.81 | 22.5 | |
| BRRI Dhan47 | 0.96 | 0.90 | 13.3 | 1.05 | 0.69 | 28.1 | |