There is growing interest in sorghum as a biofuel feedstock due to its drought-resistant properties and the recent approval by the Environmental Protection Agency of certain pathways for sorghum-based ethanol to qualify as a conventional or advanced biofuel under the Renewable Fuel Standard. Sorghum enters a dormant state and employs other strategies to conserve moisture during extreme drought, said Ismail Dweikat, a geneticist at the University of Nebraska-Lincoln. Aside from being drought-tolerant, sorghum cultivation requires less fertilizer than corn, Dweikat said.