Table 1.
Fertilization modalities at each growing period: application of poultry manure and mineral fertilizers on the three tested vegetable crops (eggplant, tomato, and carrot). Amendment was applied one week before sowing; top-dressing was applied twice: 2 weeks and 4 weeks after sowing (coastal area of Benin, 2009-2010, 288 plots).
| Fertilization modalities | Amendment (t·ha−1) | Total top-dressing (t·ha−1) | Total per growing period (t·ha−1) |
|---|---|---|---|
| T0, control | 0 | 0 | 0 |
| T1, farmer practice 1 | |||
| NPK | 0.4 | 0.8 | 1.2 |
| Urea | 0.4 | 0.8 | 1.2 |
| T2, farmer practice 2 | |||
| NPK | 0.4 | 0.8 | 1.2 |
| Urea | 0.4 | 0.8 | 1.2 |
| Poultry manure | 10 | 10 | 20 |
| T3, poultry manure only | 25 | 15 | 40 |