| Attributes | Model-Building Data Set | Validation Data Set | |||
| Full bloom | Pre-bloom | Full bloom | Vegetative regrowth | Combined | |
| Location | Buffalo, SDa | Brookings, SDb | Brookings, SDb | Brookings, SDb | Brookings, SDb |
| Sampling dates | July 2008 | June 2015 | July 2015 | August 2015 | - |
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| July 2009 |
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| July 2010 |
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| Total plants (n) | 1168 | 90 | 88 | 35 | 213 |
| Alfalfa populations |
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| Pure falcata (n) | 2 | 6 | 6 | 3 | 6 |
| Predominanly falcata (n) | 4 | 3 | 3 | 3 | 3 |
| Hay-type sativa (n) | 3 | 1 | 1 | 1 | 1 |
| Pasture-type sativa (n) | 2 | 0 | 0 | 0 | 0 |
| Canopy volume determination | Dimension measurements | Dimension measurements | Dimension measurements | Dimension measurements | Dimension measurements |
| Biomass determination | Reference unit methodc | Clippingd | Clippingd | Clippingd | Clippingd |
| Biomass |
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| Mean (g∙plant−1) | 60 | 200 | 288 | 44 | 211 |
| Median (g∙plant−1) | 39 | 192 | 285 | 32 | 188 |
| Range (g∙plant−1) | 0.2 - 686 | 34 - 449 | 26 - 669 | 8 - 134 | 8 - 669 |
| Standard error (g∙plant−1) | 2.2 | 9.0 | 16.9 | 5.6 | 9.8 |
| CV (%)e | 125 | 43 | 55 | 75 | 68 |