Subject
- Cherry -- Diseases and pests -- Willamette River Valley (Or.)1
- Cherry -- Rootstocks1
- Cherry -- Rootstocks -- Disease and pest resistance1
- Cherry bark tortrix1
- Cherry bark tortrix -- Control1
- Cherry fruit-fly -- Oregon1
- Choristoneura -- Control -- Oregon1
- Cigar casebearer1
- Codling moth1
- Coleophora1
- Corn -- Root rot -- Oregon -- Willamette River Valley1
- Corn root rot -- Oregon -- Willamette River Valley1
- Cover crops -- Oregon -- Willamette River Valley1
- Crown-gall disease1
- Eggplant -- Varieties -- Oregon, Western1
- Fusarium -- Oregon -- Willamette River Valley1
- Fusarium diseases of plants -- Oregon -- Willamette River Valley1
- Fusarium oxysporum -- Oregon -- Willamette River Valley1
- Gummosis -- Control1
- Helicoverpa armigera -- Control -- Oregon, Western1