Subject
- Potatoes -- Oregon -- Klamath County12
- Central Oregon Agricultural Research Center -- Periodicals10
- Field experiments -- Oregon -- Klamath County10
- Agriculture -- Research -- Oregon, Central -- Periodicals9
- Field experiments -- Oregon, Central -- Periodicals9
- Arid regions agriculture -- Oregon5
- Columbia Basin Agricultural Research Center -- Periodicals5
- Agriculture -- Research -- Columbia River Watershed4
- Winter wheat -- Fertilizers -- Oregon4
- Grapes -- Diseases and pests -- Northwest, Pacific3
- 4-H clubs2
- Agricultural experiment stations -- Research -- Oregon -- Malheur County2
- Agriculture -- Oregon -- Malheur County -- Field experiments2
- Alfalfa -- Fertilizers -- Oregon, Western2
- Barley -- Oregon -- Klamath County2
- Grape leafroll virus -- Northwest, Pacific2
- Grapes -- Diseases and pests -- Control -- Northwest, Pacific2
- Insects as carriers of plant disease -- Northwest, Pacific2
- Mealybugs -- Northwest, Pacific2
- Range management -- Oregon2