Agriculture accounts for the majority of global freshwater withdrawals (37), and thus even small improvements in water productivity in this sector can result in substantial water savings. Water savings can be achieved by switching to less–water-consuming crops, laser-leveling of fields, reducing nonproductive evaporation of water from soil or supply canals, changing irrigation scheduling, and adopting more efficient sprinkler systems, including microirrigation techniques (drip irrigation and microsprinklers) that precisely deliver water to plant roots (37). These approaches could help mitigate escalating water demand associated with growing energy crops, such as corn, particularly if projected increases in U.S. biofuel production are realized (38).