Switchgrass Cultivar/Ecotype Selection and Management for Biofuels in the Upper Southeast USA
Figure 2
Regression of each switchgrass cultivar’s mean yield for each location and year against its site yield variation for (a) lower-input, one-cut or (b) higher-input, two-cut systems. A cultivar’s site yield variation was calculated as its mean yield at a location minus the location’s grand mean yield [19].
