1. Clemson Univ., Pee Dee Res. and Educ. Cent. Florence SC 29506
2. USDA, ARS, Richard B. Russell Agric. Res. Cent. Athens GA 30613
3. N.C. State Univ., Oxford Tobacco Res. Stn. Oxford NC 27565
4. USDA, ARS, Vegetable Res. Lab. Charleston SC 29414
5. Univ. of Georgia, Georgia Coastal Plain Exp. Stn. Tifton GA 31794