Subject
- Agricultural pests -- Control -- Congresses15
- Agricultural pests -- Control -- Willamette River Valley (Or.)1
- Agrobacterium radiobacter1
- Aphididae1
- Apples -- Diseases and pests -- Control -- Columbia River Valley5
- Beans -- Diseases and pests1
- Beans -- Diseases and pests -- Control1
- Beans -- Growth1
- Beans -- Varieties1
- Beans -- Yields1
- Beets -- Harvesting1
- Canker (Plant disease)2
- Carrots -- Diseases and pests1
- Cherry -- Diseases and pest resistance1
- Cherry -- Diseases and pests12
- Cherry -- Diseases and pests -- Control3
- Cherry -- Diseases and pests -- Control -- Columbia River Valley5
- Cherry -- Diseases and pests -- Control -- Oregon6
- Cherry -- Diseases and pests -- Control -- Oregon -- Willamette River Valley8
- Cherry -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley6