1. ; USDA, ARS, Biological and Agricultural Engineering Department; North Carolina State University; Raleigh North Carolina 27695-7625
2. ; USDA, ARS; NC State University; 280 Weaver Bldg. Raleigh NC 27695-7625
3. ; Department of Biological and Agricultural Engineering; North Carolina State University; Raleigh North Carolina 27695-7625