| Parameter | Switchgrass[a] | Miscanthus × giganteus | References |
| Potential yield (PY, in kg/ha) | 10.4 Mg/ha | 29.6 Mg/ha | Heaton and others (2008) |
| Carbon-nitrogen ratio at harvest (CNR) | 80 | 80 | GLEAMS database[b] |
| Ratio of nitrogen to phosphorus (RNP) | 6.7 | 6.7 | GLEAMS database[b] |
| Coefficient (C1) of nitrogen content of the crop | 1.25 | 1.25 | GLEAMS database[b] |
| Exponent (C2) of nitrogen content of the crop | −0.278 | −0.278 | GLEAMS database[b] |
| PERNNL[c] | 1 | 1 | GLEAMS Manual |
| Total dry matter to yield (DMY) | 1.35 | 1.35 | GLEAMS database[b] |
| Effective Rooting depth[d] | 91.4 cm | 91.4 cm | Thomas and others (2011) |
| Maximum crop height (CRPHTX) | 250 cm | 366 cm | Purdue Water Quality Field Station (ACRE) |