| NP doses (kg∙ha−1) | Varieties | Mean | |
| S-17 | Pr-125 | ||
| No fertilizer (Control) | 20.00 | 17.00 | 18.50 c |
| NP @ 30 - 30 | 36.00 | 34.00 | 35.00 b |
| NP @ 50 - 30 | 39.00 | 36.00 | 37.50 b |
| NP @ 50 - 50 | 40.33 | 37.00 | 38.67 ab |
| NP @ 70 - 50 | 43.00 | 40.33 | 41.67 a |
| NP @ 70 - 70 | 44.00 | 40.33 | 42.17 a |
| Mean | 37.06 a | 34.11 b | - |