The head of Nevada's Department of Agriculture said Wednesday water issues will be market-driven, the Silver State is agribusiness-friendly and a food revolution is under way. Jim Barbee, the department's director since mid-2011, spoke briefly and fielded questions at a Northern Nevada Development Authority breakfast in Carson City.He followed his boss, Gov. Brian Sandoval, to the podium after Sandoval said agriculture is going to be an economic development driver in Nevada. "There's a food revolution afoot," said Barbee, noting part of that is because people seek healthier food in their diets. He said it is time to revitalize state agriculture.Fielding …