Table 1.
Field sites and number of households (HH) sampled with indication of location according to north–south rainfall zones and west-east gradients
| Site | Location according to rainfall zone | West–Central–East location | HH sampled |
|---|---|---|---|
| Burkina Faso | |||
| Bidi-2 | 400–500 mm | C | 41 |
| Yomboli | 400–500 mm | C | 40 |
| Dano | 700–900 mm | C | 105 |
| Tougou | 500–700 mm | C | 98 |
| Ziga | 700–900 mm | C | 99 |
| Mali | |||
| Dianguirdé | 500–700 mm | W | 106 |
| Gogui | 500–700 mm | W | 99 |
| Nankorola | 700–900 mm | C | 100 |
| Niger | |||
| Banizoumbou | 400–500 mm | E | 86 |
| Guidan Roumji | 400–500 mm | E | 71 |
| Mountseka | 400–500 mm | E | 93 |
| Nigeria | |||
| Chingowa | 400–500 mm | E | 45 |
| Kalalawa | 700–900 mm | E | 50 |
| Zangon Buhari | 700–900 mm | E | 47 |
| Senegal | |||
| Barkedji | 400–500 mm | W | 45 |
| Kaffrine | 500–700 mm | W | 124 |
| Total | 1249 | ||
See actual locations in Fig. 1
Dry zone: 400–500 mm; intermediate zone: 500–700 mm; wet zone: 700–900 mm