| NP doses (kg∙ha−1) | Varieties | Mean | |
| S-17 | Pr-125 | ||
| No fertilizer (Control) | 15.00 | 11.00 | 13.00 d |
| NP @ 30 - 30 | 31.00 | 29.33 | 30.17 c |
| NP @ 50 - 30 | 34.00 | 31.00 | 32.50 bc |
| NP @ 50 - 50 | 35.00 | 32.00 | 33.50 abc |
| NP @ 70 - 50 | 38.00 | 35.00 | 36.50 ab |
| NP @ 70 - 70 | 39.00 | 36.00 | 37.50 a |
| Mean | 32.00 a | 29.06 b | - |