- Oregon State University. Extension Service610
- Pscheidt, Jay W.90
- Mayer, Daniel F.70
- Stoltz, Robert L.65
- Brunner, Jay F.64
- Washington State University. Extension60
- Lunden, Jeff D.59
- Pacific Northwest Cooperative Extension57
- University Of Idaho. Extension56
- Peachey, Ed55
- Oregon State University. Agricultural Experiment Station53
- Bragg, David E.52
- Westigard, Peter H.48
- Et Al.45
- Fisher, Glenn C.45
- Walton, Vaughn M.42
- Olsen, Jeff L.41
- Peachey, Ronald Edward41
- Tanigoshi, Lynell K.38
- Oregon State University. Department Of Horticulture37