| Concentration (g·kg−1 DM) | ||||
| Forage Crop × Fertility Interaction Effects | ||||
| Crop | Fertility | ADF | CP | TDN |
| Alfalfa | No | 382aa | 139a | 578a |
| Yes | 379a | 138a | 582a | |
| Bromegrass | No | 389a | 83d | 571a |
| Yes | 396a | 85d | 563a | |
| Alfalfa + Bromegrass | No | 376a | 104c | 585a |
| Yes | 387a | 125b | 573a | |
| P values | 0.0590 | 0.0104 | 0.0589 | |
| SEM | 5.2 | 4.0 | 5.6 | |