Table 1.
General characteristics of the agro-ecological zones in Ghana.
| Agro-ecological zone | Rainfall range (mm year1) | Mean temperature range (°C year−1) | Length of growing season (days) | Major land use systems | Major soil type (WRB Reference Soil Groups) |
|---|---|---|---|---|---|
| Sudan Savanna | 900–1100 | 26–32 | MJ: 180–200 | Annual food crops, cash crops, livestock | Lixisol, Plinthosol, Luvisol |
| Guinea Savanna | 1000–1200 | 26–32 | MJ: 190–230 | Annual food crops, cash crops, livestock | Lixisol, Planosol, Plinthosol |
| Forest-Savanna Transition | 1100–1400 | 24–28 | MJ: 130–200 MN: 70 |
Annual food crops, cash crops | Lixisol, Plinthosol |
| Semi-Deciduous Forest | 1200–1500 | 24–28 | MJ: 130–160 MN: 80 |
Annual food crops, forest, plantations | Acrisol, Lixisol, Nitisol |
| Coastal Savanna | 800–1000 | 26–32 | MJ: 100–110 MN: 50 |
Annual food crops | Vertisol, Luvisol, Cambisol |
| Rain Forest | 1700–2300 | 24–28 | MJ: 90–120 MN: 40 |
Forest, plantations | Ferralsol, Acrisol, Gleysol |