1. USDA ARS Sustainable Agricultural Systems Lab. Beltsville MD 20705
2. Syngenta Crop Protection Research Triangle Park Greensboro NC 27703
3. USDA-ARS J. Phil Campbell Sr. Natural Resource Conservation Center Watkinsville GA 30677
4. USDA-ARS Southeast Watershed Research Lab. Tifton GA 31793
5. Oklahoma Agricultural Experiment Station Field and Research Service Units Stillwater OK 74078
6. North Carolina State Univ. Dep. of Agricultural and Extension Education Raleigh NC 27695
7. USDA-ARS Quality and Safety Assessment Research Unit Athens GA 30605
8. USDA-ARS Water Quality and Ecology Research Unit Oxford MS 38655