| Fertilizer | kg∙N∙ha−1 | kg∙S∙ha−1 |
| Check | 0 | 0 |
| Urea | 140 | 0 |
| Urea | 280 | 0 |
| Urea + gypsum | 140 | 112 |
| Urea + gypsum | 280 | 112 |
| Gypsum | 0 | 112 |