Saltwater Crops May Be Key to Solving Earth's Land Crunch

Certain plants can be grown on land with a high salt concentration. Some of them could produce high biomass yields for cellulosic ethanol production. Most food crops cannot be grown on these soils, so they are largely under-utilized for farming.
Food vs. Fuel: Saltwater Crops May Be Key to Solving Earth's Land Crunch Wired Science from Wired.com: "His team's report for the agency estimates that salt-loving crops could be used to produce 1.5 billion barrels of ethanol annually on a swath of new agricultural land almost five times the size of Texas."