Subject
- Pesticides -- Application -- Oregon -- Willamette River Valley[remove]5
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley5
- Apples -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
- Apples -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley1
- Blueberries -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
- Cherry -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
- Cherry -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley1
- Plum -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
- Plum -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley1
- Walnut -- Diseases and pests -- Control -- Oregon -- Willamette River Valley1
- Walnut -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley1