| Variable | Days of flowering | Days of maturity | Tuber dry matter (t/ha) |
| Organic manure (FYM) | |||
| Control | 38.07 | 109.4 | 2.028b |
| 5 ton FYM ha−1 | 37.88 | 109.07 | 2.94a |
| 10 ton FYM ha−1 | 38.11 | 109.04 | 2.86a |
| CV (%) | 4.67 | 1.46 | 28.81 |
| SEM (±) | 1.77 | 1.59 | 0.75 |
| Inorganic fertilizer N, P2O5 | |||
| Control | 38.55a | 109.96a | 2.029b |
| 55.5 Kg N ha−1 | 38.18ab | 109.48a | 2.79a |
| 111 Kg N ha−1 RDF | 37.33b | 108.07b | 3.01a |
| CV (%) | 4.67 | 1.45 | 28.81 |
| SEM (±) | 1.77 | 1.59 | 0.75 |
| Control | 39.48a | 109.81a | 2.318b |
| 46 kg P2O5 ha−1 | 37.62b | 109.15ab | 2.501b |
| 92 kg P2O5 ha−1 RDF | 36.96b | 108.56b | 3.01a |
| CV (%) | 4.67 | 1.459 | 28.81 |
| SEM (±) | 1.77 | 1.60 | 0.75 |