Subject
- Agricultural pests -- Control -- Congresses3
- Agricultural pests -- Integrated control1
- Apple -- Research -- Oregon -- Columbia River Valley1
- Best management practices (Pollution prevention) -- Oregon -- Congresses1
- Cherry -- Research -- Oregon -- Columbia River Valley1
- Field experiments -- Oregon -- Periodicals1
- Irrigation scheduling1
- Pear -- Research -- Oregon -- Columbia River Valley1
- Pears -- Diseases and pests -- Control -- Northwest, Pacific1
- Pears -- Diseases and pests -- Northwest, Pacific1
- Pests -- Integrated control -- Congresses1
- Riparian areas -- Management -- Congresses1
- Wetlands -- Oregon -- Management -- Congresses1