he Iowa Department of Agriculture and Land Stewardship.Data for specialty crops ???is just not there like it is for commodity crops such as corn and soybeans,??? said state horticulturist Mike Bevins.While the number of farmers markets in Iowa doubled from 2004 to 2009, more recent developments won???t be known until the next USDA farmers market survey is conducted in 2014, Bevins said.???Specialt