| Treatments | Days to tuberization | Number of stems per hill | ||||||
| Domar | Kashimpur | Domar | Kashimpur | |||||
| Asterix | Courage | Asterix | Courage | Asterix | Courage | Asterix | Courage | |
| T1 (NPKS) | 36.25a | 26.75b | 36.25a | 26.75b | 4.00abc | 4.50a | 3.42a | 3.92a |
| T2 (NPKS + B) | 36.75a | 26.50b | 36.75a | 26.50b | 3.50bc | 4.00abc | 3.50a | 4.50a |
| T3 (NPKS + Zn) | 36.25a | 27.00b | 36.25a | 27.00b | 3.50bc | 3.25e | 3,67a | 3.58a |
| T4 (NPKS + Mg) | 36.75a | 26.75b | 36.75a | 26.75b | 4.50a | 4.25ab | 3.84a | 3.67a |
| T5 (NPKS + BZnMg) | 36.75a | 27.00b | 36.75a | 27.00b | 3.75abc | 4.00abc | 3.50a | 4.50a |
| LSD (p < 0.05) | 1.051 | 1.057 | 0.779 | 1.095 | ||||