- Beetles -- Control -- Northwest, Pacific1
- Berries -- Diseases and pests -- Northwest, Pacific1
- Black vine weevil -- Control -- Northwest, Pacific1
- Cereal grasses -- Diseases and pests -- Control -- Northwest, Pacific1
- Cereal grasses -- Roots -- Diseases and pests -- Control -- Northwest, Pacific1
- Conifers -- Northwest, Pacific -- Roots1
- Crusted root weevil -- Control -- Northwest, Pacific1
- Forest soils -- Northwest, Pacific1
- Grain -- Diseases and pests -- Control -- Northwest, Pacific1
- Grain -- Roots -- Diseases and pests -- Control -- Northwest, Pacific1
- Lupines -- Northwest, Pacific -- Roots1
- Mychorrhizas -- Northwest, Pacific1
- Mycorrhizal fungi -- Ecology -- Northwest, Pacific1
- Phellinus -- Northwest, Pacific1
- Root crops -- Seeds -- Northwest, Pacific -- Production (Biology)1
- Root rots1
- Roots (Botany) -- Diseases and pests -- Control -- Northwest, Pacific1
- Roots (Botany) -- Ecology -- Northwest, Pacific1
- Rutabaga -- Seeds -- Northwest, Pacific -- Production (Biology)1
- Seed technology -- Northwest, Pacific1