- Oregon State University. Extension Service610
- Pscheidt, Jay W.87
- Washington State University. Extension63
- Pacific Northwest Cooperative Extension59
- University Of Idaho. Extension58
- Peachey, Ed55
- Oregon State University. Agricultural Experiment Station53
- Olsen, Jeff L.42
- Peachey, Ronald Edward41
- Watson, Barney41
- Oregon State University. Department Of Horticulture38
- Walton, Vaughn M.38
- Southern Oregon Agricultural Experiment Station37
- Candolfi Vasconcelos, M. Carmo32
- Price, Steve32
- Hart, John M. (John Mervyn), 1947 31
- Westigard, Peter H.31
- Lewis, Ted G.29
- Dalton, Meghan28
- Wiman, Nik G.27