| Treatment | Early Square | Early Bloom | Mid Bloom | Late Bloom |
| 1 | 0.55a† | 0.69a | 0.70a | 0.73a |
| 2 | 0.57a | 0.70a | 0.71a | 0.73a |
| 3 | 0.58a | 0.70a | 0.71a | 0.73a |
| 4 | 0.56a | 0.69a | 0.70a | 0.73a |
| 5 | 0.55a | 0.70a | 0.72a | 0.75a |
| 6 | 0.58a | 0.68a | 0.70a | 0.72a |
| Significance | ns‡ | ns | ns | ns |
| Contrast |
|
|
|
|
| Applied N vs. Zero N§ | ns | ns | ns | ns |
| Uniform N vs. Zero N | ns | ns | ns | ns |
| Variable N vs. Zero N | ns | ns | ns | ns |
| Variable N vs. Uniform N | ns | ns | ns | ns |