1. 1Department of Agricultural, Food, and Resource Economics, Rutgers, The State University of New Jersey, 55 Dudley Road, New Brunswick, NJ 08901
2. 2Department of Horticulture, Michigan State University, 1066 Bogue Street, Room A216, East Lansing, MI 48824
3. 3Department of Horticulture, University of Kentucky, Lexington, KY 40546
4. 4Department of Environmental Horticulture, Center For Landscape Conservation and Ecology, IFAS, University of Florida–Gulf Coast Research and Education Center, 14625 County Road 672, Wimauma, FL 33598
5. 5Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
6. 6Texas A&M AgriLife Research and Extension Center at El Paso, Texas A&M University, 1380 A&M Circle, El Paso, TX 79927
7. 7Department of Horticulture, Iowa State University, 106 Horticulture Hall, Ames, IA 50011
8. 8Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996
9. 9Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84602