Subject
- Grapes -- Diseases and pests -- Control -- Oregon5
- Viticulture -- Oregon4
- Fungicides -- Oregon2
- Grapes -- Diseases and pests -- Oregon2
- Pesticides -- Application -- Oregon2
- Spraying and dusting in agriculture -- Oregon2
- Agricultural pests -- Control -- Oregon1
- Agricultural pests -- Control -- Willamette River Valley (Or.)1
- Fungal diseases of grapes -- Control -- Oregon1
- Grapes -- Diseases and pests -- Willamette River Valley (Or.)1
- Grapes -- Weed control -- Oregon1
- Grapevine leafroll virus -- Oregon1
- Insects as carriers of plant disease -- Oregon1
- Pseudococcus maritimus -- Oregon1