Switchgrass Cultivar/Ecotype Selection and Management for Biofuels in the Upper Southeast USA

Figure 1

Relationship between latitude of origin and yield of four switchgrass cultivars grown under two management systems in the upper southeast USA. The one-cut management included 50 kg N ha/yr, and the two-cut management involved applying 100 kg N/ha/yr. Yield data are the means for each cultivar averaged across sites and years from Table 4.