Subject
- Mycorrhizas21
- Vesicular-arbuscular mycorrhizas5
- Douglas fir4
- Plant-fungi relationships3
- Fungi in agriculture2
- Mycorrhizas in agriculture2
- Soil microbiology2
- Vesicular-arbuscular mycorrhizas -- Oregon -- Willamette River Valley2
- Agrobacterium1
- Agroforestry -- Zambia1
- Apples -- Growth1
- Barley -- Frost resistance1
- Barley -- Growth1
- Big sagebrush -- Oregon -- Island, The (Jefferson County)1
- Conifers1
- Corylus1
- Desert plants1
- Endangered plants -- Ecology -- Oregon -- Willamette River Valley1
- Forest ecology1
- Forest soils1