- Fisher, Glenn C.136
- Oregon State University. Extension Service56
- Dreves, Amy J.11
- Defrancesco, Joseph T.8
- Macswan, Iain C.8
- Weinzierl, Rick8
- Berry, Ralph E. (Ralph Eugene), 1940 7
- Burns, Diane E.7
- Pacific Northwest Cooperative Extension7
- Burgett, D. M.6
- Calkin, James D.5
- West, K. J.5
- Ali Niazee, Mohammed Taskeen, 1943 4
- Horton, Rene N.4
- Umble, Jon4
- United States. Department Of Agriculture4
- University Of Idaho. Extension4
- Washington State University. Cooperative Extension4
- Washington State University. Extension4
- Berry, Ralph E.3