Subject
- Grape leafroll virus -- Northwest, Pacific1
- Grapes -- Diseases and pests -- Northwest, Pacific1
- Grapes -- Diseases and pests -- Oregon1
- Grapevine leafroll virus -- Control -- Oregon1
- Insects as carriers of plant disease -- Northwest, Pacific1
- Insects as carriers of plant disease -- Oregon1
- Mealybugs -- Control -- Oregon1
- Mealybugs -- Northwest, Pacific1
- Microirrigation1