Subject
- Fruit -- Diseases and pests -- Control -- Columbia River Valley2
- Pesticides -- Application -- Columbia River Valley2
- Spraying and dusting in agriculture -- Columbia River Valley2
- Apples -- Diseases and pests -- Control -- Columbia River Valley1
- Cherry -- Diseases and pests -- Control -- Columbia River Valley1
- Hexachlorophene1
- Pear -- Diseases and pests -- Control -- Columbia River Valley1
- Pseudomonas syringae -- Control -- Oregon1
- Sweet cherry -- Diseases and pests -- Control -- Oregon1