Subject
- Pesticides -- Application -- Oregon -- Willamette River Valley3
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley3
- Climatic changes2
- Forests and forestry -- Measurement -- Software2
- Hazelnuts -- Pollination -- Northwest, Pacific2
- Irrigation -- Oregon, Eastern -- Management2
- Lace bugs2
- Lace bugs -- Control2
- Liming of soils -- Oregon, Western2
- Microirrigation2
- Microirrigation -- Treasure Valley (Idaho and Or.)2
- Oregon State University -- Handbooks, manuals, etc.2
- Soil moisture -- Oregon, Eastern -- Measurement2
- Stinkbugs -- Oregon2
- Stinkbugs -- Oregon -- Identification2
- Acid soils -- Oregon1
- Agricultural pollution -- Oregon -- Prevention1
- Agricultural wastes -- Recycling -- Oregon1
- Amphorophora1
- Amphorophora -- Control1