LOCATION MARLBORO SC+AL FL GA NC VAEstablished Series
The Marlboro series consists of very deep, well drained, moderately permeable, clayey soils that formed in marine sediments. Slopes range from 0 to 15 percent.
TAXONOMIC CLASS: Fine, kaolinitic, thermic Typic Paleudults
TYPICAL PEDON: Marlboro loamy sand--cultivated.
(Colors are for moist soil.)
Ap--0 to 9 inches; dark grayish brown (10YR 4/2) loamy sand; weak fine granular structure; very friable; many fine roots; moderately acid; abrupt smooth boundary. (5 to 10 inches thick)
Bt1--9 to 19 inches; strong brown (7.5YR 5/8) sandy clay; moderate medium subangular blocky structure; friable; few faint clay films on faces of peds and in old root channels; many fine roots and pores; few uncoated quartz sand grains; moderately acid; clear smooth boundary.
Bt2--19 to 39 inches; strong brown (7.5YR 5/8) sandy clay; moderate medium subangular blocky structure; friable; few faint clay films on faces of peds and in old root channels; common fine roots; few uncoated quartz sand grains; moderately acid; clear smooth boundary.
Bt3--39 to 50 inches; strong brown (7.5YR 5/8) sandy clay; moderate medium subangular blocky structure; friable; common faint clay films on faces of peds; few fine roots and pores; few uncoated quartz sand grains; moderately acid; gradual smooth boundary.
Bt4--50 to 60 inches; strong brown (7.5YR 5/8) sandy clay; common fine and medium distinct yellowish red (5YR 4/6) and yellowish brown (10YR 5/8) and few fine distinct red (2.5YR 4/8) mottles; moderate medium subangular blocky structure; friable; common faint clay films on faces of peds; few uncoated quartz sand grains; moderately acid; gradual smooth boundary.
Bt5--60 to 64 inches; mottled strong brown (7.5YR 5/6), yellowish brown (10YR 5/6), yellowish red (5YR 4/6), and red (2.5YR 4/8) sandy clay; few fine pale brown mottles; weak medium subangular blocky structure; friable, sticky; common uncoated quartz sand grains; about 2 percent nodules of plinthite; strongly acid; clear smooth boundary.
Bt6--64 to 72 inches; mottled brown (10YR 5/3) and red (2.5YR 4/6) sandy clay; common medium distinct gray (10YR 6/1) mottles; weak medium subangular blocky structure; friable; common uncoated quartz sand grains; about 2 percent nodules of plinthite; very strongly acid. (Bt horizon is more than 40 inches thick)
TYPE LOCATION: Clarendon County, South Carolina; 3 miles southeast of Summerton 1/2 mile north of Davis Crossroads (County Roads 38 and 127) and 600 feet east of County Road 38.
RANGE IN CHARACTERISTICS: Solum thickness is more than 60 inches. The soil is very strongly acid to slightly acid in the A horizon and very strongly acid to moderately acid throughout the rest of the profile. Some pedons have as much as 4 percent nodules of plinthite commonly at more than 50 inches below the surface. Content of gravel ranges from 0 to 20 percent in the A and E horizons.
The A horizon has hue of 10YR, value of 4 or 5, and chroma of 1 to 4. It is loamy sand, loamy fine sand, sandy loam, fine sandy loam, or very fine sandy loam in the fine-earth fraction.
The E horizon, where present, has hue of 10YR or 2.5Y, value of 5 to 7, and chroma of 3 to 5. It is loamy sand, loamy fine sand, sandy loam, fine sandy loam, or very fine sandy loam in the fine-earth fraction.
The Bt horizon has hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 4 to 8. The middle part of the Bt of many pedons has mottles in shades of in shades of red, brown, yellow, or gray. The Bt horizon is clay loam, sandy clay, or clay. Some pedons have thin layers of sandy clay loam in the upper part of the Bt horizon.
The BC horizon, where present, has hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 4 to 8. Iron accumulations in shades of red, yellow, and brown and iron or clay depletions in shades of gray range from few to many. Texture is sandy loam, sandy clay loam, clay loam, sandy clay, or clay.
COMPETING SERIES: These are the Dewey, Fullerton, Henderson, Lugoff, Summerton, and Waynesboro series in the same family and the Aycock, Carnegie, Caroline, Collegedale, Dothan, Esto, Faceville, Freemanville, Norfolk, Shubuta, Sunsweet, Tifton, Turbeville, and Varina series in similar families. Dewey, Faceville, Fullerton, Summerton, and Waynesboro soils have dominant hue of 5YR or redder in the series control section. Henderson soils have 10 percent or more coarse fragments of chert. Lugoff soils have more than 15 percent rock fragments in the upper Bt horizon. Aycock, Carnegie, Dothan, Norfolk, and Tifton soils have less than 35 percent clay in the particle-size control section. Caroline, Collegedale, Shubuta, and Turbeville soils have mixed mineralogy. Esto soils are mottled in the upper part of the Bt horizon. Freemanville, Sunsweet, and Varina soils have a horizon with more than 5 percent plinthite within a depth of 60 inches.
GEOGRAPHIC SETTING: Marlboro soils are on smooth uplands of the Coastal Plain, with slope gradients dominantly less than 6 percent, but ranging up to 15 percent. The soil formed in clayey Coastal Plain sediments. The mean annual temperature ranges from 59 to 66 degrees F., mean annual precipitation ranges from 38 to 50 inches, and the frost-free season ranges from 190 to 240 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Aycock, Carnegie, Dothan, Faceville, Norfolk, Tifton, and Varina series plus the Craven, Dunbar, Duplin, and Nankin series. Craven and Duplin soils are Aquic Paleudults. Dunbar soils are Aquults. Nankin soils are Kanhapludults.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: Most of these soils are cultivated. Cotton, corn, soybeans, tobacco, peanuts, small grain, and hay are the principal crops.
DISTRIBUTION AND EXTENT: Coastal Plain of Alabama, Florida, Georgia, North Carolina, South Carolina, and Virginia. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Richland County, South Carolina; 1916.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface of the soil to 9 inches (Ap horizon)
Argillic horizon - the zone from 9 to 72 inches (Bt1, Bt2, Bt3, Bt4, Bt5 and Bt6 horizons)
MLRA = 133A, 153A
ADDITIONAL DATA:
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation SC0062 MARLBORO 0- 15 59- 66 190-240 38- 50 25- 450 SC0130 MARLBORO 0- 10 59- 66 190-240 38- 50 100- 450SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness SC0062 NONE 6.0-6.0 - 60-60 SC0130 NONE 4.0-6.0 APPARENT DEC-MAR 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- SC0062 0- 9 LS LFS 0- 0 95-100 2-10 .5- 2 SC0062 0- 9 SL FSL VFSL 0- 0 95-100 5-20 1- 4 SC0062 0- 9 SCL L CL - 95-100 10-30 2- 6 SC0062 9-60 SC CL C 0- 0 95-100 35-65 7- 13 SC0062 60-72 SCL SC C 0- 0 95-100 30-60 6- 12 SC0130 0- 9 LS LFS 0- 0 95-100 2-10 .5- 2 SC0130 0- 9 SL FSL VFSL 0- 0 95-100 5-20 1- 4 SC0130 0- 9 SCL L CL - 95-100 10-30 2- 6 SC0130 9-60 SC CL C 0- 0 95-100 35-65 7- 13 SC0130 60-72 SCL SC C 0- 0 95-100 30-60 6- 12
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll SC0062 0- 9 5.1- 6.5 .5-2. 0- 0 6.0- 20 LOW SC0062 0- 9 5.1- 6.5 .5-2. 0- 0 2.0- 6.0 LOW SC0062 0- 9 5.1- 6.5 .5-1. 0- 0 0.6- 2.0 LOW SC0062 9-60 4.5- 6.0 - 0- 0 0.6- 2.0 LOW SC0062 60-72 4.5- 6.0 - 0- 0 0.6- 2.0 LOW SC0130 0- 9 5.1- 6.5 .5-2. 0- 0 6.0- 20 LOW SC0130 0- 9 5.1- 6.5 .5-2. 0- 0 2.0- 6.0 LOW SC0130 0- 9 5.1- 6.5 .5-1. 0- 0 0.6- 2.0 LOW SC0130 9-60 4.5- 6.0 - 0- 0 0.6- 2.0 LOW SC0130 60-72 4.5- 6.0 - 0- 0 0.6- 2.0 LOW