1. Louisiana State University Agricultural Center, Baton Rouge, LA, USA
2. Baylor University, Waco, TX, USA
3. West Virginia University Extension, Morgantown, WV, USA
4. Oregon State University, Corvallis, OR, USA
5. Texas A&M AgriLife Extension Service, College Station, TX, USA
6. The University of Arizona, Tucson, AZ, USA
7. University of Florida, Gainesville, FL, USA