| Treatment | Maize | Cowpeas | LER | Percentage difference |
| Sole Maize | 1.00 | - | 1.00 | - |
| Sole cowpeas | - | 1.00 | 1.00 | - |
| Outside basin | 1.09 | 0.93 | 2.02 | +102 |
| Within basin | 1.46 | 1.40 | 2.86 | +186 |