| Localities | Sampling points | Geographical coordinates | Soil types |
| Maga | Maga 1 | 10˚52'15''N; 14˚55'35''E; 311 m | Flooding clay soil |
| Maga 2 | 10˚56'33''N; 14˚59'42''E; 311 m | Flooding clay soil | |
| Ziam | Ziam 1 | 10˚54'25''N; 14˚56'50''E; 311 m | Alluvial deposits |
| Ziam 2 | 10˚53'49''N; 14˚57'46''E; 311 m | Alluvial deposits | |
| Bakasaray | Bakasaray | 10˚50'35''N; 14˚59'36''E; 312 m | Alluvial deposits |
| Bakasaray | 10˚49'58''N; 15˚00'09''N; 312 m | Alluvial deposits | |
| Pouss | Pouss 1 | 10˚48'43''N; 15˚01'56''E; 313 m | Flooding clay soil |
| Pouss 2 | 10˚53'06''N; 14˚59'08''E; 313 m | Flooding clay soil |