Subject
- Aphididae -- Biological control -- Oregon -- Willamette River Valley1
- Aphididae -- Predators of -- Oregon -- Willamette River Valley1
- Broccoli -- Diseases and pests -- Biological control -- Oregon -- Willamette River Valley1
- Choristoneura -- Control -- Oregon1
- Meloidogyne -- Control -- Columbia River Watershed1
- Meloidogyne -- Control -- Oregon -- Klamath Basin1
- Meloidogyne -- Control -- San Luis Valley (Colo. and N.M.)1
- Potatoes -- Diseases and pests -- Control -- Columbia River Watershed1
- Potatoes -- Diseases and pests -- Control -- Oregon -- Klamath Basin1
- Potatoes -- Diseases and pests -- Control -- San Luis Valley (Colo. and N.M.)1
- Predation (Biology) -- Oregon -- Willamette River Valley1
- Sweet cherry -- Diseases and pests -- Control -- Oregon1
- Syrphidae -- Oregon -- Willamette River Valley1