Table 1.
FAO Aqua crop calibration parameters.
| Crop parameters | Values |
|---|---|
| TMin (°C) | 8 |
| TMax (°C) | 38 |
| Initial canopy cover (%) | 0.42 |
| Number of plants per hectare | 55,556 |
| Canopy growth coefficient (%/°C-day) | 0.22230 |
| Canopy cover 30 days after planting (%) - 30 DAP | 60 |
| Canopy cover 90 days after planting (%) - 90 DAP | 100 |
| Canopy cover 120 days after planting (%) - 120 DAP | 90 |
| Time to start senescence (degree days) | 1340 |
| Canopy decline coefficient (%/°C-day) | 0.141 |
| Growing cycle (degree days) | 1930 |
| Minimum effective rooting depth (Z min (m)) | 0.25 M |
| Maximum effective rooting depth (Z max (m)) | 1.5 |
| Shape factor | 2 |
| Crop transpiration coefficient (Kcb) | 1 |
| Time from planting to maximum depth (degree days) | 658 |
| Reduction with age (%/day) | 0.15 |
| Soil water evaporation coefficient Ke (%/day) | 1 |
| Water productivity (WP (g m-2)) | 20 |
| Reference harvest index (%) | 90 |
| Building up of HI (degree days) | 997 |
| Increase (%) of HI | 5% HIMax 94 |
| Depletion factor (for ET ~ 5 mm/day | 0.65 |
| Air temperature stress (°C-day) | 8 |
| Minimum growing degrees required (°C-day) | 8 |