1. Iowa State University, Department of Plant Pathology, Entomology, and Microbiology, Ames, IA 50011, U.S.A.
2. Mississippi State University, Delta Research and Extension Center, Stoneville, MS 38776, U.S.A.
3. University of Kentucky, Department of Plant Pathology, Princeton, KY 42445, U.S.A.
4. University of Arkansas System Division of Agriculture, Department of Entomology and Plant Pathology, Lonoke, AR 72086, U.S.A.
5. North Dakota State University, Department of Plant Pathology, Fargo, ND 58108, U.S.A.
6. Auburn University, Department of Entomology and Plant Pathology, Auburn, AL 36849, U.S.A.
7. Mississippi State University, Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State, MS 39762, U.S.A.
8. North Carolina State University, Department of Entomology and Plant Pathology, The Vernon James Center, Plymouth, NC 27962, U.S.A.
9. Ontario Ministry of Agriculture, Food and Rural Affairs, Ridgetown, Ontario, N0P 2C0, Canada