RECORD
Effects of Subsurface Drainage on Productivity of Western larch and Nutrient Content of Andic Soils in Northwestern Montana
- Title:
- Effects of Subsurface Drainage on Productivity of Western larch and Nutrient Content of Andic Soils in Northwestern Montana
- Creator:
- Spitzner, Charles E.
- Date Created:
- 1981
- Description:
- Andic soils in northwestern Montana have developed from volcanic ash deposited following the eruption of Mount Mazama (site of present day Crater Lake, Oregon) about 6,600 years ago (Allison 1966, Kittleman 1973). Other ash falls following the eruptions of Glacier Peak about 11,250 years ago (Mehringer et al. 1977) and the intermittent eruptions of Mt. St. Helens beginning 35,000 years ago (Crandell and Mullineau 1973) contributed minimally to ash in these soils. The quantity of tephra deposited in Montana from these sources is small by comparison to that from Mt. Mazama, and has contributed less to andic soil development. Soils developing from volcanic ash material exhibit a high cation exchange capacity and water holding capability (Fosberg et al. 1979, U.S.D.A. Forest Service 1972, Will and Stone 1967). Inherent fertility and greater than average forest productivity are expected on soils exhibiting these characteristics. Poor forest growth on andic soils in areas of northwestern Montana receiving greater than 76 cm of annual precipitation is inconsistent with management expectations. When affected acreages are large, the poor growth becomes cause for concern.
- Document Type:
- Thesis
- Subjects:
- andic soils whether variation subsurface drainage rate nutrient content timber productivity soil fertility
- Latitude:
- 46.869607
- Longitude:
- -116.733856
- Publisher:
- Spitzner, Charles E. "Effects of subsurface drainage on productivity of western larch and nutrient content of andic soils in northwestern Montana." (1981).
- Department:
- University of Montana
- Type:
- Text
- Format:
- record
Source
- Preferred Citation:
- "Effects of Subsurface Drainage on Productivity of Western larch and Nutrient Content of Andic Soils in Northwestern Montana", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0334.html
Rights
- Rights:
- In copyright, educational use permitted.
- Standardized Rights:
- http://rightsstatements.org/vocab/InC-EDU/1.0/