LOCATION AGRICOLA ALEstablished Series
TAXONOMIC CLASS: Fine, kaolinitic, thermic Rhodic Kanhapludults
TYPICAL PEDON: Agricola gravelly loam on an east-facing, convex, 19 percent slope in longleaf pine and loblolly pine forests. (Colors are for moist soil unless otherwise indicated.)
A--0 to 3 inches; dark reddish brown (5YR 3/4) gravelly loam; weak fine granular structure; very friable; many fine and medium roots; 25 percent angular gravel; many fine pores; slightly acid; gradual wavy boundary. (2 to 6 inches thick)
BA--3 to 6 inches; dark reddish brown (2.5YR3/4) very gravelly loam; weak fine granular structure; very friable; common fine and few coarse roots; 40 percent quartz gravel and 10 percent quartz cobbles; very strongly acid; clear wavy boundary. (0 to 21 inches thick)
Bt1--6 to 13 inches; dark red (2.5YR 3/6) clay loam; weak fine subangular blocky structure; firm; common fine and medium roots; 10 percent angular gravel; 2 percent cobbles; few distinct clay films on faces of peds; clear wavy boundary.
Bt2--13 to 24 inches; dark red (2.5YR 3/6) clay; moderate medium subangular blocky structure; firm; common fine and medium roots; common distinct clay films on faces of peds; few fine flakes of mica; moderately acid; clear wavy boundary.
Bt3--24 to 35 inches; red (2.5YR 4/6) clay loam; moderate medium subangular blocky structure; firm; few fine roots; common distinct clay films on faces of peds; few fine flakes of mica; moderately acid; clear irregular boundary (Combined thickness of the Bt horizon is 14 to 24 inches)
Cr--35 to 80 inches; highly weathered tilted fractures amphibolite, platy rock structure, digs out easily.
TYPE LOCATION: Tallapoosa County, Alabama; about 1.1 miles southeast of Pleasant Valley Church; 625 feet north and 2250 feet east of the southwest corner of section 33, T20N; R23E.
RANGE IN CHARACTERISTICS:
Solum thickness: 20 to 40 inches
Depth to soft bedrock: 20 to 40 inches
Depth to hard bedrock: 5 feet to more than 10 feet
Depth to seasonal high water table: greater than 5 feet
Content and size of rock fragments: 0 to 5 percent small dark accumulations and concretions of manganese throughout the solum; 0 to 25 percent mainly pebbles and some cobbles in the A horizon and 0 to 15 percent in the B and C horizon
Soil reaction: very strongly acid to slightly acid, except where the surface has been limed
RANGE OF INDIVIDUAL HORIZONS:
A horizon:
Color=hue of 10R to 7.5YR, value of 3, and chroma of 2 to 6
Texture (fine-earth fraction)=sandy loam, loam, sandy clay loam, clay loam
BA horizon(where present):
Color=hue of 10R or 2.5YR, value of 3 or 4, and chroma 2 to 4
Texture(fine earth fraction)= sandy loam, loam, sandy clay loam, or clay loam
Bt horizon:
Color=hue of 2.5YR or 10R, value of 3, and chroma of 3 to 6. The lower part may have value of 4 and /or mottles in shades of brown and yellow
Texture (fine-earth fraction)=clay, sandy clay, clay loam, or sandy clay loam. The clay content ranges from 35 to 60 percent in the control section. Mica content ranges from none to common.
BC horizon (where present):
Color=hue of 10R to 5YR, value of 3 or 4, and chroma of 3 to 6
Texture (fine-earth fraction)=loam, clay loam or sandy clay loam.
Cr horizon:
Type of bedrock=highly weathered basic crystalline soft bedrock with seams and cracks that are commonly coated with red or dark red sandy clay loam, clay loam, or clay.
COMPETING SERIES:
These are the
Gwinnett and
Lloyd series of the same family and the,
Alcoa,
Anniston,
Cumberland,
Davidson,
Decatur,
Greenville,
Hanceville,
Musella,
Nacogdoches,
Rabun, and
Tellico series of closely related families.
Lloyd soils are more than 60 inches to soft bedrock and have sola of 40 inches thick or more.
Gwinnett soils have paralithic contact at a depth of 40 to 60 inches and sola thickness from 20 to 40 inches.
Alcoa, Anniston, Cumberland, Davidson, Decatur, Greenville, Hanceville, and Nacogdoches soils have sola thickness of more than 50 inches.
Alcoa soils have oxidic mineralogy.
Cumberland soils have base saturation of more than 35 percent.
Musella soils have sola less than 20 inches thick and can occur on slopes up to 80 percent.
Rabun soils have mean annual soil temperature of less than 59 degrees F.
Tellico soils have oxidic mineralogy and develops in residuum of sandstone and shale.
GEOGRAPHIC SETTING:
Landscape: Piedmont uplands
Landform: Hill
Hillside Profile Position: Summit, side slope and foot slope
Parent material: Residuum weathered from dark-colored rocks such as gneiss and schist containing mafic minerals
Elevation (type location): 700 to 1200 feet
Slope: 2 to 60 percent
Mean Annual Air Temperature (type location): 62 degrees F
Mean Annual Precipitation (type location): 54 inches
GEOGRAPHICALLY ASSOCIATED SOILS:
These include the competing
Davidson,
Gwinnett,
Lloyd, and
Musella series and the
Appling,
Cecil,
Iredell,
Madison,
Mecklenburg,
Pacolet,
Wilkes and
Wynott series.
Appling and Cecil soils have sola more than 40 inches thick on slopes up to 25 percent.
Iredell and Mecklenburg soils have more than 35 percent base saturation and browner colors on slopes up to 25 percent.
Pacolet soils have color values of more than 3 in the Bt horizons and can occur on slopes up to 80 percent.
Wilkes soils have Cr at depths less than 20 inches thick.
Wynott soils have R at depths ranging from 40 to more than 60 inches.
DRAINAGE AND PERMEABILITY:
Drainage Class (Agricultural): Well drained
Index Surface Runoff: medium to rapid
Permeability: moderate
USE AND VEGETATION:
Major Uses: Woodland and pasture
Dominant Vegetation: Pine and oak forest. A few areas are in pasture.
DISTRIBUTION AND EXTENT:
Distribution: Piedmont areas of Alabama, and possibly Georgia and South Carolina
Extent: small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Tallapoosa County, Alabama, 2003.
REMARKS: Diagnostic horizons recognized in this series are:
Ochric epipedon - the zone from the surface to approximately 6 inches (Ap, BA horizon)
Argillic horizon - the zone from approximately 6 to 35 inches (Bt1, Bt2, and Bt3)
Kandic horizon - the zone from approximately 6 to 35 inches with low activity clay in most of the zone (Bt1, Bt2, and Bt3 horizons)
05/06 revision was to clean up terminolgy and insert ommissions