| N rate (kg∙ha−1) | Grain yield (kg∙ha−1) | Straw yield (kg∙ha−1) | Biomass yield (kg∙ha−1) | Grain N (%) | Straw N (%) |
| 0 | 1477c | 2291d | 3768d | 0.86c | 0.74c |
| 45 | 3295b | 3780c | 7075c | 0.92c | 0.81b |
| 90 | 5302a | 6523b | 11,825b | 1.24b | 0.89a |
| 135 | 5470a | 6783a | 12,253a | 1.33a | 0.87a |