1. Department of Horticulture Oregon State University Corvallis Oregon USA
2. Forage Seed and Cereal Research Unit, United States Department of Agriculture – Agriculture Research Service Corvallis Oregon USA
3. Department of Plant Sciences University of Tennessee Knoxville Tennessee USA
4. Department of Plant Science Pennsylvania State University State College Pennsylvania USA
5. Department of Horticulture and Landscape Architecture Purdue University West Lafayette Indiana USA
6. Department of Plant & Soil Sciences Mississippi State University Starkville Mississippi USA
7. Department of Soil & Crop Sciences, Texas A&M AgriLife – The Dallas Center Dallas Texas USA
8. Crop and Soil Sciences North Carolina State University Raleigh North Carolina USA
9. School of Plant and Environmental Sciences Virginia Polytechnic Institute and State University Blacksburg Virginia USA
10. Crop, Soil and Environmental Sciences Auburn University Auburn Alabama USA
11. West Florida Research and Education Center University of Florida Jay Florida USA
12. Department of Plant Biology, Rutgers The State University of New Jersey New Brunswick New Jersey USA
13. U.S. Solution Development, Envu Cary North Carolina USA
14. Bracell, Lençóis Paulista São Paulo Brazil