1. Extension Specialist, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., Box 7637, Raleigh, NC 27695 (corresponding author).
2. Former Ph.D. Candidate, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., Box 7625, Raleigh, NC 27695.
3. Associate Professor and Extension Specialist, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., Box 7625, Raleigh, NC 27695.
4. Area Extension Agent, North Carolina Cooperative Extension Service, Franklin County, 103 S Bickett Blvd, Louisburg, NC 27549.