- Eastern filbert blight -- Northwest, Pacific2
- Hazelnuts -- Diseases and pests -- Northwest, Pacific2
- Hazelnuts -- Pollination -- Northwest, Pacific2
- Soils -- Nitrogen content -- Northwest, Pacific2
- Canola -- Fertilizers -- Northwest, Pacific1
- Expert systems (Computer science)1
- Fertilizers -- Application -- Northwest, Pacific -- Data processing1
- Foliar diagnosis -- Northwest, Pacific1
- Golden paintbrush (Plant) -- Fertilizers -- Northwest, Pacific1
- Golden paintbrush (Plant) -- Reintroduction -- Northwest, Pacific1
- Golden paintbrush (Plant) -- Soils -- Northwest, Pacific1
- Hazelnut industry -- Northwest, Pacific1
- Hazelnuts -- Disease and pest resistance -- Genetic aspects1
- Hazelnuts -- Diseases and pests -- Control -- Northwest, Pacific1
- Hazelnuts -- Diseases and pests -- Integrated control -- Northwest, Pacific1
- Hazelnuts -- Fertilizers -- Northwest, Pacific1
- Hazelnuts -- Genome mapping1
- Hazelnuts -- Harvesting -- Northwest, Pacific1
- Hazelnuts -- Losses -- Northwest, Pacific1
- Hazelnuts -- Northwest, Pacific1