1. Dep. of Plant Sciences North Dakota State Univ. NDSU Department 7670, P.O. Box 6050 Fargo ND 58108‐6050 USA
2. North Central Research Extension Center North Dakota State Univ. 5400 Highway 83 South Minot ND 58701 USA
3. Dep. of Horticultural Sciences Univ. of Minnesota 305 Alderman Hall St. Paul MN 55108 USA
4. Dep. of Plant Pathology North Dakota State Univ. NDSU Department 7660, P.O. Box 6050 Fargo ND 58108‐6050 USA
5. Dep. of Plant Pathology Syngenta Stanton MN 55018 USA
6. Williston Research Extension Center North Dakota State Univ. 14120 Highway 2 Williston ND 58801 USA
7. Carrington Research Extension Center North Dakota State Univ. 663 Hwy. 281 N. P.O. Box 219 Carrington ND 58421‐0219 USA
8. Hettinger Research Extension Center North Dakota State Univ. 102 Hwy 12 W, P.O. Box 1377 Hettinger ND 58639 USA
9. Langdon Research Extension Center North Dakota State Univ. 9280 107th Ave. N.E. Langdon ND 58249 USA
10. Dickinson Research Extension Center North Dakota State Univ. 1041 State Avenue Dickinson ND 58601 USA
11. Eastern Agricultural Research Center Montana State Univ. 1501 N Central Ave. Sidney MT 59270 USA
12. Dep. of Plant Science and Plant Pathology Montana State Univ. 119 Plant BioScience Building Bozeman MT 59717‐3150 USA