Calculated bioethanol yield per hectare. A study by Agricultural Research Service (ARS) scientists found that sweet potatoes grown in Maryland and Alabama, and tropical cassava grown in Alabama, yielded between two to three times as much carbohydrate (starch, sucrose, glucose) for fuel ethanol production via fermentation as field corn grown in those states. Dr. Lew Ziska, a plant physiologist at the ARS Crop Systems and Global Change Laboratory in Beltsville, Md., and colleagues at Beltsville and at the ARS National Soil Dynamics Laboratory in Auburn, Ala., performed the study. The research is unique in comparing the root crops to...
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