65a67d99__Biopower_in_the_United_States__4
[0] Sorghum—varieties selected for biomass production (similar to a tall thin stalked forage sorghum crop) [1] 7,476-8,184 [2] 4-10 dry tons/acre/year Higher yields observed [3] Suitable for warm and dry growing regions Seed production delayed, thus produces more biomass Annual crop, thus immediate return on investment Grows across most of eastern and central U.S., not frost limited [5] Sweet, grain, and silage sorghums are more suitable for ethanol production with higher sugar content Susceptibility to anthracnose disease of some genotypes [4] 
Yields more variable than switchgrass, with rainfall differences Requires > 20 inches of rainfall annually Annual crop, thus more expense and work to replant each year
Biomass Feedstocks for Biopower in the United States
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