Table 3.
Cardinal (Base (Tb), optimum (Topt) and maximum (Tmax)) and extreme temperature thresholds (Ceiling vegetative temperature (TC1) and Ceiling reproductive temperature (TC2)) for cereal crops.
(Source: Ramirez-Villegas et al66).
| Crops | Tb(°C) | Topt (°C) | Tmax (°C) | TC1 (°C) | TC2 (°C) |
|---|---|---|---|---|---|
| Barley | 0.0–5.0 | 25.0–31.0 | 50.0 | 30.0 | 40.0 |
| Maize | 8.0 | 30.0 | 38.0 | 33.0 | 44.0 |
| Millet | 10.0 | 34.0 | 40.0 | 30.0 | 40.0 |
| Oat | 0.0–5.0 | 25.0–31.0 | 31.0–37.0 | – | – |
| Rice | 20.0 | 28.0 | 35.0 | 22.0 | 30.0 |
| Rye | 0.0–5.0 | 25.0–31.0 | 31.0– 37.0 | – | – |
| Sorghum | 8.0 | 34.0 | 40.0 | 32.0 | 44.0 |
| Wheat | 0.0 | 13.2 | 35.0 | 34.0 | 40.0 |