1. Assistant Professor and Extension Specialist, Dept. of Biological Systems Engineering, Hampton Roads Agricultural Research and Extension Center, Virginia Tech, 1444 Diamond Springs Rd., Virginia Beach, VA 23455 (corresponding author).
2. Graduate Research Assistant, Dept. of Biological Systems Engineering, Hampton Roads Agricultural Research and Extension Center, Virginia Tech, 1444 Diamond Springs Rd., Virginia Beach, VA 23455.
3. Statistical Collaborator, Dept. of Statistics, Laboratory for Interdisciplinary Statistical Analysis, Virginia Tech, 212 Hutcheson Hall (0439), Blacksburg, VA 24061.