Subject
- Agricultural pests -- Control -- Congresses201
- Pears -- Diseases and pests82
- Apples -- Diseases and pests75
- Codling moth -- Control37
- Pear psylla -- Control29
- Apple pandemis -- Control10
- Pear psylla6
- Codling moth5
- Two-spotted spider mite5
- Two-spotted spider mite -- Control5
- European red mite -- Control3
- Agricultural pests -- Integrated control2
- Apple aphid2
- Apple pandemis2
- Spirea aphid2
- Codling moth -- Control -- Oregon1
- Earwigs1
- Hood River Valley (Or.)1
- Pears -- Diseases and pests -- Hood River Valley (Or.)1
- Plum -- Diseases and pests1