1. Graduate Research Assistant, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., Box 7625, Raleigh, NC 27695 (corresponding author).
2. Assistant Professor and Extension Specialist, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., Box 7625, Raleigh, NC 27695.
3. Extension Associate, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., Box 7625, Raleigh, NC 27695.