Washington State Soil
Washington State Soil
The State Soil of Washington is the Tokul Soil Series
The name ?Tokul? is derived from a small community and creek in King County, Washington. The State of Washington has more than 1,000,000 acres of Tokul soils. These soils are on the western side of the Cascade Mountains along the Puget Trough, from south of Seattle north to the Canadian border. Washington was the first state to recognize soils that formed in volcanic ash (Andisols) as a state soil.
Tokul soils are among the most productive soils in the world. These soils support Douglas-fir and other conifer trees, which are the source of Washington?s nickname, ?the Evergreen State.?
The State of Washington has hundreds of soils that are influenced by volcanic ash. These ?volcanic? soils are used for crop production, timber production, livestock grazing, recreation, and watershed. Most areas of Tokul soils are used for timber production, but some of the smaller areas are used as pasture and for urban development. Tokul soils are limited as sites for homes. Water perches above the dense glacial till during wet periods, making steep slopes unstable.
Download the Washington State Soil Profile
Source: NRCS
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- Washington State Soil. (2010, July 12). In State Reports by ClassBrain. Retrieved 17:07, May 18, 2012, from http://www.statereports.us/2010/07/washington-state-soil/
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- Cynthia Kirkeby, “Washington State Soil.” State Reports by ClassBrain. 12 July 2010, 16:27 UTC. . 18 May 2012 <http://www.statereports.us/2010/07/washington-state-soil/>.
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- Cynthia Kirkeby, 'Washington State Soil', State Reports by ClassBrain, 12 July 2010, 16:27 UTC, <http://www.statereports.us/2010/07/washington-state-soil/> [accessed 18 May 2012]
- The Chicago Manual of Style
- Cynthia Kirkeby, “Washington State Soil.” State Reports by ClassBrain, http://www.statereports.us/2010/07/washington-state-soil/ [accessed May 18, 2012].
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- Cynthia Kirkeby, Washington State Soil [Internet]. State Reports by ClassBrain; 2010 July 12, 16:27 UTC [cited 2012 May 18]. Available from: http://www.statereports.us/2010/07/washington-state-soil/.
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- Washington State Soil, http://www.statereports.us/2010/07/washington-state-soil/ (last visited May. 18, 2012).
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- Cynthia Kirkeby, Washington State Soil. State Reports by ClassBrain. July 12, 2010, 16:27 UTC. Available at: http://www.statereports.us/2010/07/washington-state-soil/. Accessed May 18, 2012.