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Toisnot soilscape; Johnston County, North Carolina

The Toisnot series (a hydric soil) consists of poorly drained, slowly permeable soils that formed in fluvial or marine sediments in the upper Coastal Plain. Slopes range from 0 to 2 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: Coarse-loamy, siliceous, semiactive, thermic Typic Fragiaquults

 

Depth to the upper boundary of the fragipan commonly ranges from 20 to 40 inches. In wet seasons, the fragipan is dry to moist, whereas, the adjacent horizons are saturated. Reaction ranges from extremely acid to strongly acid throughout the profile, unless the surface has been limed.

 

USE AND VEGETATION: Most areas are in mixed forests of hardwoods and pine. Native trees include oak, maple, sweetgum, yellow-poplar, and loblolly pine, with understory plants as sweet bay, myrtle, gallberry, and smilax. Small acreages have been cleared and used for pasture, corn, and soybeans.

 

DISTRIBUTION AND EXTENT: Upper Coastal Plain areas of North Carolina and possibly South Carolina and Virginia. The series is inextensive.

 

For a detailed description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/T/TOISNOT.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#toisnot

 

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Uploaded on February 27, 2022
Taken on December 13, 2007