Subject
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley43
- Pesticides -- Application -- Oregon -- Willamette River Valley41
- Spraying and dusting in agriculture -- Oregon16
- Grapes -- Diseases and pests -- Control -- Oregon15
- Viticulture -- Oregon13
- Fungicides -- Oregon11
- Pesticides -- Application -- Oregon11
- Pear -- Diseases and pests -- Control -- Oregon -- Willamette River Valley9
- Apples -- Diseases and pests -- Control -- Oregon -- Willamette River Valley8
- Cherry -- Diseases and pests -- Control -- Oregon -- Willamette River Valley8
- Peach -- Diseases and pests -- Integrated control -- Oregon8
- Blueberries -- Diseases and pests -- Control -- Oregon -- Willamette River Valley7
- Peach -- Diseases and pests -- Control -- Oregon7
- Walnut -- Diseases and pests -- Control -- Oregon -- Willamette River Valley7
- Cherry -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley6
- Eastern filbert blight -- Control -- Oregon -- Willamette River Valley6
- Hazelnuts -- Diseases and pests -- Control -- Oregon -- Willamette River Valley6
- Hazelnuts -- Diseases and pests -- Oregon6
- Apples -- Diseases and pests -- Integrated control -- Oregon -- Willamette River Valley5
- Eastern filbert blight -- Integrated control -- Oregon -- Willamette River Valley5