LOCATION BROGDON SCEstablished Series
The Brogdon series consists of very deep, well drained soils that formed in loamy marine sediments. These soils have moderately rapid permeability in the upper subsoil and slow permeability in the lower subsoil. These soils have sandy A and E horizons over loamy Bt horizons which are underlain by another sequum. Slope ranges from 0 to 6 percent.
TAXONOMIC CLASS: Coarse-loamy, siliceous, semiactive, thermic Plinthic Paleudults
TYPICAL PEDON: Brogdon fine sand--cultivated.
(Colors are for moist soil.)
Ap--0 to 7 inches; dark grayish brown (10YR 4/2) fine sand; weak fine granular structure; very friable; many fine roots and pores; strongly acid; abrupt smooth boundary. (5 to 9 inches thick)
E--7 to 12 inches; light yellowish brown (10YR 6/4) loamy fine sand; weak fine granular structure; very friable; many fine roots and pores; moderately acid; clear smooth boundary. (3 to 8 inches thick)
Bt1--12 to 19 inches; strong brown (7.5YR 5/6) fine sandy loam; weak medium subangular blocky structure; friable; few fine roots; many fine pores; sand grains coated and bridged with clay; strongly acid; clear smooth boundary. (6 to 15 inches thick)
Bt2--19 to 27 inches; strong brown (7.5YR 5/8) fine sandy loam; weak coarse subangular blocky structure; friable; few fine roots; many fine pores; sand grains coated and bridged with clay; strongly acid; gradual wavy boundary. (4 to 10 inches thick)
E and Bt--27 to 43 inches; light yellowish brown (10YR 6/4) fine sand (E); weak coarse subangular blocky structure; very friable; few fine roots; many fine pores; many pockets and streaks of clean sand grains that are light gray; few pockets of yellowish brown (10YR 5/8) sandy loam (Bt) with sand grains coated and bridged with clay; strongly acid; gradual wavy boundary. (10 to 24 inches thick)
B't--43 to 54 inches; yellowish brown (10YR 5/8) sandy clay loam; weak medium subangular blocky structure; friable; many fine pores; common faint clay films; strongly acid; clear smooth boundary. (0 to 15 inches thick)
Btv1--54 to 62 inches; yellowish brown (10YR 5/8) sandy clay loam; weak medium subangular blocky structure; friable; many fine pores; common faint clay films; common (about l0 percent) medium plinthite nodules; strongly acid; clear smooth boundary. (6 to 20 inches thick)
Btv2--62 to 72 inches; reticulately mottled strong brown (7.5YR 5/8), red (2.5YR 4/8), and light gray (10YR 7/2) sandy clay loam; gray parts finer textured than red and brown; weak medium and coarse subangular blocky structure; friable; common fine pores; common faint clay films in pores and on faces of some peds; common (about 15 percent) medium plinthite nodules; very strongly acid.
TYPE LOCATION: Sumter County, South Carolina; 7 l/2 miles southwest of Sumter; l.5 miles west from junction of county roads 40 and 458. Site is on south side of this dirt road.
RANGE IN CHARACTERISTICS: Solum thickness is more than 60 inches. The soil is bisequal. It is very strongly acid to moderately acid in the A and E horizons and very strongly acid or strongly acid throughout the rest of the profile.
The Ap or A horizon has hue of 10YR, value of 4 to 6, and chroma of 1 to 3. It is sand, fine sand, loamy sand, or loamy fine sand.
The E horizon has hue of 10YR or 2.5Y, value of 5 to 7, and chroma of 2 to 4. It is sand, fine sand, loamy sand, or loamy fine sand.
The Bt horizon has hue of 5YR to 10YR, value of 5 or 6, and chroma of 4 to 8. The particle-size control section has an average clay content of 8 to 18 percent, less than 20 percent silt, and more than 15 percent coarser than very fine sand.
The E and Bt horizon is at a depth of 20 to 40 inches below the surface. It has hue of 7.5YR or 10YR, value of 5 to 7, and chroma of 3 to 8. This horizon is sand, fine sand, loamy sand, or loamy fine sand with remnants of sandy loam Bt material and pockets and streaks of clean sand. In some pedons, this horizon is an E' horizon and does not have sandy loam Bt material.
The B't and Btv horizons are about 30 to 60 inches below the surface. They have matrix with hue of 5YR to 10YR, value of 5 or 6, and chroma of 4 to 8 or it is mottled with these colors. Mottles in shades of red or gray are in some pedons. The B't and Btv horizons commonly are sandy clay loam, and less commonly sandy loam, sandy clay, or clay loam.
COMPETING SERIES: These include the Compass and Poarch series. Compass and Poarch soils are not bisequal. The Benndale, Butters, Dothan, Eustis, Harleston, Kalmia, Kenansville, McLaurin, Norfolk, Paola, Rumford, and Ruston series are similar soils in related families. Benndale, Harleston, and McLaurin soils have more than 20 percent silt in the top 20 inches of the Bt horizon. Butters soils do not have plinthite. Eustis soils have a sandy Bt horizon. Kalmia, Kenansville, and Rumford soils have a solum less than 40 inches thick. Dothan, Norfolk, and Ruston soils have 18 to 35 percent clay in the top 20 inches of the Bt horizon. Paola soils have a sandy epipedon more than 20 inches thick.
GEOGRAPHIC SETTING: Brogdon soils are on smooth surfaces of the Coastal Plain. Slope gradients range from 0 to 6 percent. The soils formed in unconsolidated loamy marine sediments. The mean annual temperature ranges from 62 to 66 degrees F., and the mean annual precipitation ranges from 42 to 50 inches, and the frost-free season ranges from 220 to 250 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Dothan, Eustis, Kenansville, and Norfolk series plus the Fuquay, Goldsboro, Pocalla, and Wagram series. Goldsboro soils have 18 to 35 percent clay in the top 20 inches of the Bt horizon and have mottles with chromas of 2 or less within 30 inches of the surface. Fuquay, Pocalla, and Wagram soils have a sandy A horizon more than 20 inches thick.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is slow to medium. Permeability is moderately rapid in the upper subsoil and slow in the lower subsoil.
USE AND VEGETATION: Mostly used for cotton, corn, tobacco, peanuts, soybeans, small grain, vegetables, and pasture. Forested areas are in loblolly pine, slash pine and mixed hardwoods.
DISTRIBUTION AND EXTENT: South Carolina, Alabama, Florida, Georgia, and North Carolina. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Sumter County, South Carolina; l969.
REMARKS: Particle size analysis is on file for this pedon. Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface of the soil to 12 inches (Ap and E horizons)
Argillic horizon - the zones from 12 to 27 inches, and from 43 to 72 inches (Bt1, Bt2, B't, Btv1 and Btv2 horizons)
MLRA = 133A
SIR = SC0043
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation SC0043 BROGDON 0- 6 62- 66 220-250 42- 50 40- 215SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness SC0043 NONE 6.0-6.0 - 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- SC0043 0-12 S FS 0- 0 98-100 2- 8 2- 4 SC0043 0-12 LS LFS 0- 0 98-100 5-15 2- 7 SC0043 12-27 SL 0- 0 98-100 8-18 1- 3 SC0043 27-43 LS LFS S 0- 0 96-100 2-10 1- 2 SC0043 43-72 SL SCL SC 0- 0 96-100 10-35 1- 4
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll SC0043 0-12 4.5- 6.0 .5-1. 0- 0 6.0- 20 LOW SC0043 0-12 4.5- 6.0 .5-1. 0- 0 6.0- 20 LOW SC0043 12-27 4.5- 5.5 0.-.5 0- 0 2.0- 6.0 LOW SC0043 27-43 4.5- 5.5 0.-.5 0- 0 2.0- 6.0 LOW SC0043 43-72 4.5- 5.5 0.-.5 0- 0 0.06- 0.2 LOW