Soilscape of Tonka soil; North Dakota
The Tonka series consists of very deep, poorly drained, slowly permeable soils that formed in local alluvium over till or glaciolacustrine deposits. These soils are in closed basins and depressions on till and glacial lake plains and have slopes of 0 to 1 percent.
Hydric soils are formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part (Federal Register, 1994). Most hydric soils exhibit characteristic morphologies that result from repeated periods of saturation or inundation that last more than a few days.
To download the latest version of "Field Indicators of Hydric Soils" and additional technical references, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=s...
TAXONOMIC CLASS: Fine, smectitic, frigid Argiaquic Argialbolls
Tonka soils are widely distributed on the glaciated plains of North Dakota, northeastern South Dakota, and western Minnesota. The series is extensive and is used mainly for small grains, hay and pasture. Native vegetation is tall grasses, sedges and rushes. 09-05A-39
For a detailed description, please visit:
soilseries.sc.egov.usda.gov/OSD_Docs/T/TONKA.html
For acreage and geographic distribution, visit:
Soilscape of Tonka soil; North Dakota
The Tonka series consists of very deep, poorly drained, slowly permeable soils that formed in local alluvium over till or glaciolacustrine deposits. These soils are in closed basins and depressions on till and glacial lake plains and have slopes of 0 to 1 percent.
Hydric soils are formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part (Federal Register, 1994). Most hydric soils exhibit characteristic morphologies that result from repeated periods of saturation or inundation that last more than a few days.
To download the latest version of "Field Indicators of Hydric Soils" and additional technical references, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=s...
TAXONOMIC CLASS: Fine, smectitic, frigid Argiaquic Argialbolls
Tonka soils are widely distributed on the glaciated plains of North Dakota, northeastern South Dakota, and western Minnesota. The series is extensive and is used mainly for small grains, hay and pasture. Native vegetation is tall grasses, sedges and rushes. 09-05A-39
For a detailed description, please visit:
soilseries.sc.egov.usda.gov/OSD_Docs/T/TONKA.html
For acreage and geographic distribution, visit: