LOCATIONS SUBMITTING DATA FOR 1997 State Location Code Iowa Ames IA1 Illinois Urbana IL1 Illinois Carbondale (Full sun) IL2 Illinois Carbondale (Dense Shade) IL3 Kentucky Lexington KY1 Maine Orono ME1 Maryland Beltsville UB1 Michigan East Lansing (Light Shade) MI1 New Jersey North Brunswick NJ1 New Jersey Adelphia NJ2 Oklahoma Stillwater OK1 Washington Pullman WA1 Wisconsin Madison WI1