Subject
- Agricultural pests -- Control -- Congresses[remove]58
- Pears -- Diseases and pests3
- Codling moth -- Control1
- Hessian fly -- Control1
- Insecticides -- Research1
- Onion thrips -- Control1
- Organic farming1
- Pear psylla -- Control1
- Potatoes -- Diseases and pests1
- Soft wheat -- Diseases and pests1
- Stone fruit -- Diseases and pests1
- Two-spotted spider mite -- Control1
- Wireworms -- Control1