Subject
- Range plants -- Oregon77
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley42
- Pesticides -- Application -- Oregon -- Willamette River Valley40
- Agriculture -- Oregon -- Statistics24
- Child rearing21
- Farm produce -- Oregon -- Statistics21
- Forage plants21
- Agricultural estimating and reporting -- Oregon19
- Weeds -- Control18
- Spraying and dusting in agriculture -- Oregon16
- Cover crops -- Oregon14
- Grapes -- Diseases and pests -- Control -- Oregon14
- Viticulture -- Oregon14
- Herbicides13
- Noxious weeds -- Control -- Oregon12
- Range management12
- Finance, Personal11
- Fungicides -- Oregon11
- Water conservation11
- Child development10