Subject
- Soil moisture35
- Plants, Effect of soil moisture on11
- Soil moisture -- Measurement10
- Soil temperature6
- Soil moisture -- Oregon -- Willamette River Valley5
- Irrigation -- Oregon, Eastern -- Management4
- Soil moisture -- Oregon, Eastern -- Measurement4
- Waterlogging (Soils) -- Oregon -- Willamette River Valley4
- Drainage -- Oregon -- Willamette River Valley3
- Irrigation3
- Plant-water relationships3
- Soil absorption and adsorption3
- Soil mechanics3
- Soil moisture -- Oregon3
- U.S. International Biological Program. Coniferous Forest Biome3
- Douglas fir2
- Growth (Plants)2
- Hydrophobic surfaces2
- Plants -- Effect of soil moisture on -- Oregon -- H.J. Andrews Experimental Forest2
- Plants, Effect of temperature on2