LOCATION PERQUIMANS NCEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, semiactive, thermic Typic Endoaquults
TYPICAL PEDON: Perquimans silt loam--cultivated. (Colors are for moist soil.)
Ap--0 to 5 inches; grayish brown (10YR 5/2) silt loam; weak medium granular structure; friable; few fine and medium roots; slightly acid; abrupt smooth boundary. (4 to 9 inches thick)
Eg--5 to 8 inches; light gray (2.5Y 7/2) silt loam; weak medium granular structure; friable; few fine and medium roots; slightly acid; abrupt smooth boundary. (0 to 6 inches thick)
Btg1--8 to 19 inches; gray (10YR 6/1) silty clay loam; weak medium subangular blocky structure; friable; slightly sticky, slightly plastic; few medium roots; common fine prominent brownish yellow (10YR 6/8) iron masses; few faint clay films on faces of peds; moderately acid; clear smooth boundary.
Btg2--19 to 31 inches; grayish brown (2.5Y 5/2) clay loam; weak medium subangular blocky structure; friable; slightly sticky, slightly plastic; common coarse prominent brownish yellow (10YR 6/8) iron masses; few faint clay films on faces of peds; strongly acid; clear smooth boundary.
Btg3--31 to 50 inches; gray (10YR 6/1) silty clay loam; weak medium subangular blocky structure; slightly sticky, slightly plastic; many medium prominent brownish yellow (10YR 6/8) iron masses and common medium faint light gray (2.5Y 7/2) iron depletions; few faint clay films on faces of peds; strongly acid; clear smooth boundary.
Btg4--50 to 62 inches; light brownish gray (2.5Y 6/2) silt loam; weak medium subangular blocky structure; friable; common medium prominent strong brown (7.5YR 5/6) and olive yellow (2.5Y 6/6) iron masses; strongly acid. (Combined thickness of the Btg horizon ranges from 25 to 60 inches.)
TYPE LOCATION: Perquimans County, North Carolina; approximately 0.4 mile west of intersection of State Road 1300 and State Road 1302, 100 feet north of State Road 1302 in a cultivated field.
RANGE IN CHARACTERISTICS:
Solum Thickness: 30 to more than 60 inches
Depth to Bedrock: Greater than 60 inches
Depth to Seasonal High Water Table: 0 to 12 inches, November to April
Soil Reaction: very strongly acid to slightly acid in the A and Eg horizons except where limed and very strongly acid to moderately acid in the lower horizons.
Ap or A horizon:
Color--hue of 10YR to 5Y or it is neutral, value of 2 to 6, and chroma of 0 to 2
Texture--silt loam, loam, or very fine sandy loam
Eg horizon (if it occurs):
Color--hue of 10YR to 5Y, value of 5 to 7, and chroma of 1 or 2
Texture--silt loam, loam, or very fine sandy loam
Redoximorphic Features--iron masses in shades of yellow, brown, or red
AB or BA horizon (if it occurs)
Color--hue of 10YR to 5Y, value of 5 to 7, and chroma of 1 or 2
Texture--loam, silt loam, or very fine sandy loam
Redoximorphic Features--iron masses in shades of yellow, brown, or red and iron depletions in shades of gray, olive, and brown
Btg horizon:
Color--hue of 10YR to 5Y, value of 5 to 7, and chroma of 1 or 2
Texture--loam, silt loam, silty clay loam, or clay loam
Redoximorphic Features--iron masses in shades of yellow, brown, or red and iron depletions in shades of gray, olive, and brown
BCg or CBg horizon:
Color--hue of 10YR to 5Y, value of 5 to 7, and chroma of 1 or 2
Texture--loam, silt loam, sandy loam, clay loam, or sandy clay loam
Redoximorphic Features--iron masses in shades of yellow, brown, or red and iron depletions in shades of gray, olive, and brown
Cg horizon:
Color--hue of 10YR to 5Y, or is neutral, value of 5 to 8, and chroma of 0 to 2
Texture--it is sandy or loamy material, but some pedons contain thin strata of clay.
COMPETING SERIES:
Toddstav--poorly drained soils that formed in colluvium and alluvium derived from mica schist and contains more mica than Perquimans soils.
GEOGRAPHIC SETTING:
Landscape: Coastal Plain
Landform: Marine Terrace
Elevation: Less than 25 feet above mean sea level
Parent Material: loamy marine sediments
Mean Annual Air Temperature: 59 to 63 degrees
Mean Annual Precipitation: 46 to 52 inches
Frost Free Period: 200 to 240 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Bertie soils--Somewhat poorly drained soils (seasonal high water table 12 to 18 inches) in fine-loamy family on slightly higher landscapes
Barclay soils--somewhat poorly drained soils (seasonal high water table 0 to 12 inches) in coarse-silty family on slightly higher landscapes
Chowan soils--poorly drained soils (seasonal high water table 0 to 6 inches) on adjacent flood plains
Hyde soils--very poorly drained soils (seasonal high water table 0 to 12 inches) on similar landscapes
Nimmo soils--poorly drained soils (seasonal high water table 0 to 12 inches) in coarse-loamy family on similar landscapes
Pasquotank soils--poorly drained soils (seasonal high water table 0 to 12 inches) in coarse-silty family on similar landscapes
Roanoke soils--poorly drained soils (seasonal high water table 0 to 12 inches) in fine family on similar landscapes
Tomotley soils--poorly drained soils (seasonal high water table 0 to 12 inches) in fine-loamy family on similar landscapes
Wahee soils--somewhat poorly drained soils (seasonal high water table 12 to 18 inches) in fine family on slightly higher landscapes
Weeksville soils--very poorly drained soils (seasonal high water table 0 to 12 inches foot) in coarse-silty family on similar landscapes
Yeopim soils--moderately well drained soils (seasonal high water table 18 to 36 inches) on higher landscapes
DRAINAGE AND PERMEABILITY:
Agricultural Drainage Class: Poorly drained
Permeability: Moderately slow
USE AND VEGETATION:
Major Uses: Mostly cultivated
Dominant Vegetation: Where cultivated--corn, soybeans, wheat, cucumbers, cabbage, potatoes, and pasture. Where wooded--loblolly pine, sweetgum, water oak, willow oak, green ash, blackgum, red maple, and yellow poplar with understory plants that include sweetbay, inkberry (bitter gallberry), large gallberry, greenbrier, giant cane, and southern bayberry (waxmyrtle).
DISTRIBUTION AND EXTENT:
Distribution: Lower Coastal Plain of North Carolina and possibly Alabama, Louisiana, Mississippi, Virginia
Extent: moderate
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Perquimans County, North Carolina; 1982.
REMARKS: In the past Perquimans soils have been included with Tomotley and Roanoke soils. However, Tomotley soils are in a fine-loamy family, and Roanoke soils are in a clayey family. Particle-size data are available for this pedon.
Diagnostic horizons and soil properties recognized in the typical pedon are:
Ochric epipedon -the zone from 0 to 8 inches (Ap and Eg horizons)
Argillic horizon -the zone between depths of 8 to 62 inches (Btg1, Btg2, Btg3 and Btg4 horizons)
MLRA(s): 153B SIR: NC0145
ADDITIONAL DATA:
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation NC0145 PERQUIMANS 0-2 59-63 200-240 46-52 5-25SOI-5 FloodL FloodH Watertable Kind Months Bedrock NC0145 NONE RARE 0-1.0 APPARENT NOV-APR 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- NC0145 0-8 SIL L VFSL 0-0 100-100 8-25 3-9 NC0145 8-50 L SICL CL 0-0 100-100 18-35 4-8 NC0145 50-62 SIL L SL 0-0 100-100 8-25 2-6
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll NC0145 0-8 4.5-6.5 2.-4. 0-0 2.0-6.0 LOW NC0145 8-50 4.5-6.0 0.-1. 0-0 0.2-0.6 LOW NC0145 50-62 4.5-6.0 0.-.5 0-0 0.2-0.6 LOW