- Winter wheat -- Varieties -- Oregon, Eastern4
- Winter wheat -- Varieties -- Washington (State), Eastern3
- Fertilizers -- Application -- Oregon, Eastern1
- Nitrogen fertilizers -- Oregon, Eastern1
- No-tillage -- Oregon, Eastern1
- No-tillage -- Washington (State), Eastern1
- Phosphatic fertilizers -- Oregon, Eastern1
- Phosphatic fertilizers -- Washington (State), Eastern1
- Plants -- Effect of nitrogen on -- Oregon, Eastern1
- Soft wheat -- Varieties -- Oregon, Eastern1
- Soft wheat -- Varieties -- Washington (State), Eastern1
- Winter wheat -- Fertilizers -- Oregon, Eastern1
- Winter wheat -- Fertilizers -- Washington (State), Eastern1
- Winter wheat -- Yields -- Oregon, Eastern1