Sweet potatoes outperform corn

By | October 06, 2008
Sweet potatoes produced two to three times more carbohydrates for ethanol production compared with corn in studies conducted in Maryland and Alabama, according to researchers with the USDA's Agricultural Research Service. In a series of trials, carbohydrate production from sweet potatoes was 4.2 tons per acre in Alabama and 5.7 tons per acre in Maryland, compared with corn at 1.5 tons per acre in Alabama and 2.5 tons per acre in Maryland. In Alabama, the corn yields were 80 bushels per acre, and in Maryland, they were 102 bushels per acre. The national average corn yield is 151 bushels per acre.