Subject
- Agricultural pests -- Control -- Congresses2,179
- Apples -- Diseases and pests130
- Pears -- Diseases and pests123
- Codling moth -- Control97
- Insecticides -- Research69
- Pear psylla -- Control45
- Pesticides -- Application -- Oregon -- Willamette River Valley29
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley29
- Apple pandemis -- Control19
- Peach -- Diseases and pests17
- Almond -- Diseases and pests13
- Agricultural pests -- Integrated control12
- Codling moth12
- Two-spotted spider mite -- Control9
- Walnut -- Diseases and pests9
- Agricultural pests -- Control -- Willamette River Valley (Or.)8
- Obliquebanded leafroller -- Control8
- Peach -- Diseases and pests -- Integrated control -- Oregon8
- Pear psylla8
- Leafrollers -- Control7