Subject
- Agricultural pests -- Control -- Congresses3
- Agricultural chemicals -- Application1
- Chemigation1
- Corn smut diseases -- Control -- Northwest, Pacific1
- Corn smut diseases -- Northwest, Pacific1
- Potato tuberworm -- Control -- Northwest, Pacific1
- Sphacelotheca -- Northwest, Pacific1
- Ustilago maydis -- Northwest, Pacific1
- Vegetables -- Diseases and pests -- Integrated control1