Treatments | N levels | 1000 tuber weight (kg) | Increase over control (%) | Relative weight (%) |
T1 | 0 | 22.92 c | - | 73.52 |
T2 | 60 | 25.56 b c | 11.5 | 81.97 |
T3 | 90 | 31.18 a | 36.0 | 100.00 |
T4 | 120 | 27.41 b | 19.6 | 87.92 |
T5 | 150 | 26.61 c | 16.1 | 85.35 |