You know, they can grow an awful lot of rice down here in the south, if the price would just go up a little. I know a handful of dryland wheat farmers that could start sowing their fields tomorrow if the global price of wheat weren't being so heavily subsidized.
Rice is a lot more water-intensive than wheat. We have a researcher at work who focuses on developing strains that use less water, but it may be a while. At present, according to him, rice production accounts for 30% of the fresh water use in the world.