LOCATION OTHELLO MD+DE NJ PA VAEstablished Series
Saturated Hydraulic Conductivity: Moderately high in the solum, high and very high in the 2Cg horizon
Permeability (obsolete): Moderately slow in the solum, rapid in the 2Cg horizon
Physiographic Region: Coastal Plain
Landscape: Lowland
Landform (type location): Flat
Parent Material: Silty eolian deposits and/or fluviomarine sediments
Slope: 0 to 5 percent
Elevation (type location): 2 meters (6.5 feet)
Frost Free Period (type location) 210 days
Mean Annual Air Temperature (type location): 13 degrees C (55 degrees F.).
Mean Annual Precipitation (type location): 1143 mm (45 inches)
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Typic Endoaquults
TYPICAL PEDON: Othello silt loam on a smooth 0 percent slope, in a forested area . (Colors are for moist soil.)
Oi--0 to 8 cm (0 to 3 inches); slightly decomposed leaves and twigs; abrupt smooth boundary. (0 to 10 cm thick)
A--8 to 18 cm (3 to 7 inches); very dark gray (10YR 3/1) silt loam; weak fine and medium granular structure; very friable; slightly sticky; slightly plastic; many very fine, common fine and medium, and few coarse roots throughout; many very fine, few fine and medium tubular pores; very strongly acid; clear wavy boundary. (5 to 10 cm thick)
Eg--18 to 36 cm (7 to 14 inches); gray (10YR 5/1) silt loam; weak medium subangular blocky structure; friable; slightly sticky; slightly plastic; many very fine, common fine, few medium and coarse roots throughout; many very fine, few fine and medium tubular pores; very strongly acid; clear wavy boundary. (13 to 25 cm thick)
Btg1--36 to 51 cm (14 to 20 inches); gray (10YR 6/1) silt loam; moderate medium prismatic structure; firm; moderately sticky; moderately plastic; many very fine, common fine and few medium roots throughout; many very fine and few fine tubular pores; common prominent clay films on faces of peds and in pores; common medium prominent yellowish brown (10YR 5/8) irregular iron accumulations throughout; very strongly acid; gradual wavy boundary.
Btg2--51 to 89 cm (20 to 35 inches); gray (2.5Y 5/1) silt loam; strong medium and coarse prismatic structure; firm; moderately sticky; moderately plastic; many very fine, few fine and common medium roots throughout; many very fine and few fine tubular pores; common prominent clay films on faces of peds and in pores; common medium prominent strong brown (7.5YR 5/8) irregular iron accumulations throughout; very strongly acid; clear wavy boundary. (combined thickness of the Btg horizon is 38 to 102 cm)
2Btg3--89 to 107 cm (35 to 42 inches); grayish brown (2.5Y 5/2) sandy loam; moderate medium and coarse subangular blocky structure; friable; slightly sticky; slightly plastic; common very fine, few fine and medium roots throughout; many very fine and few fine tubular pores; common distinct clay films on faces of peds and in pores; common fine and medium prominent yellowish brown (10YR 5/6) irregular iron accumulations throughout; very strongly acid; clear wavy boundary. (13 to 25 cm thick)
2Cg1--107 to 152 cm (42 to 60 inches); gray (10YR 6/1) loamy sand; single grain; loose; few very fine and fine roots throughout; common medium faint grayish brown (2.5Y 5/2) irregular iron depletions throughout; very strongly acid; clear wavy boundary.
2Cg2--152 to 183 cm (60 to 72 inches); gray (10YR 5/1) sand; single grain; loose; few medium prominent strong brown (7.5YR 5/8) irregular iron accumulations throughout; very strongly acid.
TYPE LOCATION: Wicomico County, Maryland; approximately .6 miles east of Royal Oak, 500 feet west of University of Maryland Research Farm entrance, 150 feet north of Route 349 into woods; USGS Hebron topographical quadrangle; latitude 38 degrees 21 minutes 07.9 seconds N. and longitude 75 degrees 46 minutes 54.46 seconds W. NAD 83; Major Land Resource Area 153D
RANGE IN CHARACTERISTICS:
Solum Thickness is typically 61 to 122 cm (24 to 48 inches)
Depth to Bedrock: Greater than 183 cm (72 inches)Depth to Seasonal High Water Table: 0 to 25 cm (0 to 10 inches), January to May with wide seasonal fluctuation
Depth to Lithologic Discontinuity: 61 to 102 cm (25 to 40 inches)
Rock Fragments: 0 to 5 percent, by volume in the A horizon, 0 to 10 in the B horizon, and 0 to 20 percent in the C horizon, mostly quartz pebbles
Soil Reaction: Extremely acid to strongly acid, throughout the profile, unless limed
Other Features: The weighted average clay content of the particle-size control section ranges from 18 to 27 percent
RANGE OF INDIVIDUAL HORIZONS:
Oi or Oe horizon (if it occurs):
Color--2.5YR to 10YR, value of 2 to 5, chroma of 1 to 3
Type of organic soil material--slightly decomposed or moderately decomposed plant material
Ap horizon (if it occurs)::
Color--hue of 7.5YR to 5Y, value of 3 or 5, chroma of 1 to 3
Texture--silt loam, mucky silt loam, fine sandy loam, or silty clay loam
A horizon
Color--hue of 7.5YR to 5Y, value of 3 or 4, chroma of 1 to 3
Texture--silt loam, mucky silt loam, fine sandy loam, or silty clay loam
E or Eg horizon
Color--hue of 10YR to 5Y, value of 5 to 7, chroma of 1 to 3
Texture--silt loam, fine sandy loam, or silty clay loam
Btg horizon:
Color--hue of 10YR to 5Y, value of 5 to 7, chroma of 1 or 2, or is neutral with value of 5 to 7
Texture-silt loam or silty clay loam
Redoximorphic Features--iron depletions in shades of olive, white or gray and iron accumulations in shades of red, brown, yellow, or olive
2Btg horizon:
Color--hue of 10YR to 5Y, value of 5 to 7, and chroma of 1 or 2
Texture of the fine-earth fraction--sandy loam, loam or sandy clay loam
Redoximorphic Features--iron depletions in shades of gray, olive and white and iron accumulations in shades of yellow, red, brown and olive
BCg or 2BCg horizon (if it occurs)
Color--hue of 10YR to 5Y, value of 4 to 7, and chroma of 1 or 2, or is neutral with value of 4 to 8
Texture-sandy clay loam, loam, fine sandy loam, or sandy loam
Redoximorphic Features--iron depletions in shades of olive, white or gray and iron accumulations in shades of red, brown, yellow, or olive
2Cg horizon:
Color--hue of 10YR to 5Y, value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 8
Texture-sand to sandy loam, stratified in some pedons
Redoximorphic Features--iron depletions in shades of olive, white or gray and iron accumulations in shades of red, brown, yellow, or olive
2C horizon (if it occurs):
Color--hue of 10YR to 5Y, value of 4 to 8, chroma of 3 or 4
Texture-sand to sandy loam, stratified in some pedons. Some pedons have thin strata of finer-texture material.
Redoximorphic Features--iron depletions in shades of olive, white or gray and iron accumulations in shades of red, brown, yellow, or olive
COMPETING SERIES:
Elkton soils--have an particle-size control section with a weighted average clay content of 27 to 35 percent, a solum thickness of generally more than 102 cm (40 inches), and slow permeability
Knowlton soils--formed in acid alluvium derived from shale, siltstone, and sandstone and do not have underlying sandy materials
GEOGRAPHIC SETTING:
Landscape: Lowland
Landform: Flat, swale, drainageway, and depressions
Elevation: 0.5 to 21 meters (2 to 70 feet)
Parent Material: Silty eolian deposits and/or fluviomarine sediments
Frost Free Period: 180 to 220 days
Mean Annual Air Temperature: 11 to 14 degrees C. (52 to 58 degrees F.)
Mean Annual Precipitation: 1067 to 1219 mm (42 to 48 inches)
GEOGRAPHICALLY ASSOCIATED SOILS:
Fallsington soils--have a fine-loamy particle-size control section, on similar landforms
Leonardtown soils--have a fragipan, on similar landforms
Beltsville soils--have a fine-loamy particle-size control section, have a fragipan, and are moderately well drained, on higher landforms
Butlertown soils--have a fragipan and are moderately well drained, on higher landforms
Keyport soils--have a fine particle-size control section and are moderately well drained, on higher landforms
Matapeake soils--are well drained, on higher landforms
Mattapex soils--are moderately well drained, on higher landforms
Whitemarsh soils--have an abrupt texture change at the top of the argillic horizon, on similar landforms
Woodstown soils--have a fine-loamy particle-size control section and are moderately well drained, on higher landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage Class (Agricultural): Poorly drained
Saturated Hydraulic Conductivity (Permeability obsolete): Moderately high in the solum, high and very high in the 2Cg horizon
Internal Free Water Occurrence: Very shallow, 0 to 25cm (0 to 10 inches) and common (present 3 to 6 months) Flooding Frequency and Duration: None
Ponding Frequency and Duration: None to frequent and none to long
Index Surface Runoff: Negligible
USE AND VEGETATION:
Major uses: Woodland and cropland
Dominant Vegetation: Where cultivated-corn and soybeans with minor acreages of pasture or truck crops. Where wooded- wetland hardwoods, mostly sweetgum, black gum, red maple, and wetland oaks, loblolly pine and pond pine. Managed woodland vegetation: Loblolly pine
Understory species: Black gum, sweet pepperbush, greenbriar, American holly and highbush blueberry.
DISTRIBUTION AND EXTENT:
Distribution: Coastal Plain of Delaware, New Jersey, and Maryland
Extent: Large
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Pasquotank County, North Carolina, 1951
REMARKS:
Diagnostic horizons and other diagnostic soil characteristics recognized in this pedon are:
Ochric epipedon--the zone from 0 to 36 cm (Oi, A and Eg horizons)
Argillic horizon--the zone from 36 to 107 cm (Btg1, Btg2 and 2Btg3 horizons)
Aquic conditions--the zone from 8 cm to a depth of 203 cm is periodically saturated (endosaturation)
ADDITIONAL DATA: This series sampled as S77MD-029-021, S84MD-019-012 and S84MD-019-013. Data can be obtained from NSSL.
Database Information: Representative Pedon Data Mapunit--458369
Series Interpretation Record(s): MD0032, MD0152
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
MD0032 OTHELLO 0- 5 52- 58 190-210 42- 48 2- 70
MD0152 OTHELLO 0- 2 54- 58 190-210 42- 48 2- 20
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness
MD0032 NONE 0-1.0 APPARENT JAN-MAY 60-60
MD0152 NONE - APPARENT - 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- MD0032 0- 9 SIL FSL SICL 0- 0 100-100 15-28 8- 20 MD0032 9-29 SICL SIL 0- 0 100-100 18-30 5- 15 MD0032 29-50 SL L SCL 0- 0 85-100 12-27 1- 5 MD0032 50-72 S LS LFS 0- 0 85-100 4-10 1- 5 MD0152 0- 6 MK-SIL SIL 0- 0 100-100 14-22 10- 30 MD0152 6-12 SIL 0- 0 100-100 12-20 3- 15 MD0152 12-40 SIL SICL 0- 0 100-100 18-30 5- 20 MD0152 40-48 SCL SL FSL 0- 0 85-100 15-24 5- 20 MD0152 48-72 LS S 0- 0 85-100 3-10 3- 10SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll MD0032 0- 9 4.5- 5.5 1.-2. 0- 0 0.6- 2.0 LOW MD0032 9-29 3.6- 5.5 0.-.5 0- 0 0.2- 0.6 LOW MD0032 29-50 3.6- 5.5 0.-.5 0- 0 0.2- 2.0 LOW MD0032 50-72 3.6- 5.5 0.-.5 0- 0 2.0- 6.0 LOW MD0152 0- 6 3.6- 5.5 3.-10 0- 0 0.6- 2.0 LOW MD0152 6-12 3.6- 5.5 0.-1. 0- 0 0.6- 2.0 LOW MD0152 12-40 3.6- 5.5 0.-.5 0- 0 0.2- 0.6 LOW MD0152 40-48 3.6- 5.5 0.-.5 0- 0 2.0- 6.0 LOW MD0152 48-72 3.6- 5.5 0.-.5 0- 0 6.0- 20 LOW
Revised 11/2002-JEB, JAK; 1/2010-JEB, DHK