Table 1: Biomass yield of switchgrass cultivars grown in southern Iowa from 1998 to 2001 [21].

Varieties Yield (Mg ha−1)

Upland
 Trailblazer7.9
 Blackwell8.3
 Cave-in-Rock9.3
 Pathfinder7.3
 Caddo 7.8
Lowland
 Alamo12.1
 Kanlow13.1