STARKVILLE, Mississippi, Dec. 16 -- Mississippi State University posted the following news: * * * USDA leaders visit MSU to honor Jenkins' 64-year career, highlight 'Mississippi Model' partnership Mississippi State University welcomed leaders from the U.S. Department of Agriculture's Agricultural Research Service, or ARS, to campus on Tuesday [Dec. 16] to celebrate the retirement of Johnie Jenkins, an ARS Hall of Fame research plant geneticist whose 64-year career has had a global impact on a  more