WASHINGTON, July 23 (TNSres) -- The U.S. Department of Agriculture's Natural Resources Conservation Service issued the following news: * * * Iowa State University Extension and Outreach and USDA's Natural Resources Conservation Service (NRCS) are collaborating on a series of cover crop fact sheets for Iowa farmers interested in adopting the practice or trying new cover crops to achieve specific goals on their operation. * * * DES MOINES, IA -- Iowa State University Extension and Outreach and  more