| Species | Cultivar | Type | May | July | September | October | Mean4) |
| Italian ryegrass | Magnet | HighMg | 14.2bA | 1.8bC | 15.1bA | 6.2bB | 9.4 |
| Ace | Commercial | 13.9bA | 1.2bC | 14.1bA | 4.3bB | 8.4 | |
| Tachiwase | Commercial | 30.5aA | 4.9aD | 20.9aB | 12.9aC | 17.3 | |
| Waseyutaka | Commercial | 12.8bA | 3.7aC | 14.1bA | 7.3bB | 9.5 | |
| Relative range (%) | −19.9 | ||||||
| Tall fescue | HiMag | HighMg | 8.1bB | 2.0bC | 15.5aA | 8.6bB | 8.6 |
| Fawn | Commercial | 9.9abB | 2.1bC | 15.9aA | 13.7aA | 10.4 | |
| Hokuryo | Commercial | 10.9aB | 3.4aC | 17.3aA | 7.9bB | 9.9 | |
| Ky-31 | Commercial | 9.9abA | 2.5bC | 12.9aA | 7.3bB | 8.5 | |
| Relative range (%) | −9.5 | ||||||
| Orchardgrass | Mgwell | HighMg | 8.1bB | 1.9bC | 15.1aA | 6.6bB | 7.9 |
| Akimidori | Commercial | 9.9abB | 2.3abC | 16.0aA | 8.9aB | 9.3 | |
| Okamidori | Commercial | 10.9aA | 4.1aB | 16.9aA | 9.3aA | 10.3 | |
| Relative range (%) | −13.6 | ||||||