- Hart, John M. (John Mervyn), 1947 [remove]43
- Oregon State University. Extension Service25
- Horneck, Donald Arthur12
- Christensen, Neil Walter, 1944 9
- Mellbye, Mark Edward8
- Lutcher, L. K. (Lawrence K.)5
- Strik, Bernadine C. (Bernadine Cornelia), 1962 5
- Wysocki, Donald John, 1952 5
- Anderson, Nicole P.4
- Flowers, Michael Darrell, 1971 4
- Gingrich, Gale Allen4
- Pacific Northwest Cooperative Extension4
- Petrie, S. E.4
- Corp, Mary K.3
- Fransen, S.3
- Gangwer, Michael I.3
- Marx, E. S.3
- Righetti, Tim3
- Silberstein, T. B.3
- Young, W. C.3