Robert W. Scheuerman is Farm Advisor, University of California Cooperative Extension, Merced, California; Teme P. Hernandez is Professor, Department of Horticulture, Louisiana State University, Baton Rouge; Weston J. Martin is Professor and Head, Department of Plant Pathology and Crop Physiology, Agricultural Experiment Station, Louisiana State University, Baton Rouge; Christopher Clark is Assistant Professor, Department of Plant Pathology and Crop Physiology, Agricultural Experiment Station, Louisiana State University, Baton Rouge; Roysell Constantin is Superintendent, Fruit and Truck Station, Hammond, Louisiana; Harrell Hammett is Superintendent, Sweet Potato Research Center, Chase, Louisiana.