LOCATION MYATT AL+AR FL GA LA MS NC SC VAEstablished Series
TAXONOMIC CLASS: Fine-loamy, siliceous, active, thermic Typic Endoaquults
TYPICAL PEDON: Myatt silt loam, on a smooth 0.5 percent slope,
in pasture.
(Colors are for moist soil.)
Ap--0 to 5 inches; gray (10YR 5/1) silt loam, common fine distinct yellowish brown (10YR 5/6) mottles; weak fine granular structure; very friable; many fine roots; very strongly acid;
abrupt smooth boundary. (4 to 9 inches thick)
Eg--5 to 10 inches; light brownish gray (10YR 6/2) loam, few fine distinct yellowish brown (10YR 5/6) and brownish yellow
(10YR 6/6) mottles; weak fine granular and weak fine subangular blocky structure; friable; many fine roots; very strongly acid; gradual wavy boundary. (0 to 8 inches thick)
Btg--10 to 32 inches; gray (10YR 6/1) sandy clay loam, many coarse distinct yellowish brown (10YR 5/6) mottles; weak fine and medium subangular blocky structure; friable; few fine roots;
nearly continuous clay films on faces of peds and in pores; very strongly acid; gradual wavy boundary. (16 to 50 inches thick)
BCg--32 to 50 inches; distinctly mottled gray (10YR 6/1) and strong brown (7.5YR 5/8) loam; weak medium subangular blocky structure; friable; clay films along vertical cracks and on some faces of peds; extremely acid; clear wavy boundary. (0 to 20
inches thick)
2Cg--50 to 72 inches; mottled light gray (10YR 6/1),
yellowish brown (10YR 5/6), and strong brown (7.5YR 5/6) gravelly fine sandy loam; massive; friable; extremely acid.
TYPE LOCATION: Fayette County, Alabama; one mile west of
Winfield on road to Upper Coastal Plain Experiment Station, NW1/4NE1/4 sec. 19, T. 13 S., R. 21 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 40 to 60 inches. Reaction ranges from very strongly acid to medium acid
in the upper part of the solum and from extremely acid to
strongly acid in the lower part of the solum and the underlying material. Percent by volume of gravel-size coarse fragments
range from 0 to 3 percent by volume in the solum and from 5 to 25 percent in the underlying material.
The A horizon has hue of 2.5Y or 10YR, value of 3 to 6, and
chroma of 1 or 2. Texture is silt loam, loam, very fine sandy
loam, fine sandy loam, sandy loam, loamy sand, or loamy fine
sand.
The ABg, BAg, Eg, or BEg horizon, where present, has hue of 2.5Y
or 10YR, value of 4 to 7, and chroma of 1 or 2. Texture is the
same as the A horizon.
The Btg horizon has hue of 5Y to 10YR or neutral, value of 3 to
7, and chroma of 2 or less. Mottles are in shades of brown, red,
or yellow. Texture is sandy clay loam, clay loam, loam, fine
sandy loam, or sandy loam with 18 to 35 percent clay and 20 to 45 percent silt. Some pedons have a subhorizon within the Btg
horizon of sandy clay with strata of sandier material.
The BCg horizon, where present, has the same range in hue, value,
and chroma as the Btg horizon. Texture is sandy loam, fine sandy loam, sandy clay loam, or loam. Some pedons are stratified with sandy and clayey material.
The CBg, Cg, or 2Cg horizon, where present, is mottled or gleyed. Texture is dominantly sandy loam, fine sandy loam, sandy clay
loam, clay loam, or their gravelly analogues; but some pedons are stratified with sandy and clayey material.
COMPETING SERIES:
Ogeechee is the only series in the same
family, other competing series in closely similar families
include the
Amy,
Lumbee,
Rains,
Tomotley, and
Weston series. Ogeechee and Rains soils have a solum thickness of more than 60 inches. Amy soils have more silt. Lumbee soils have a solum thickness of less than 40 inches. Tomotley soils have mixed sand mineralogy. Weston soils have less than 18 percent sand.
GEOGRAPHIC SETTING: Myatt soils are on level or nearly level
fairly broad stream terraces that are occasionally to frequently flooded and on upland flats in the Coastal Plain. The regolith consists of medium to moderately fine textured marine or
fluvatile sediments. Slopes range from 0 to 2 percent.
GEOGRAPHICALLY ASSOCIATED SOILS: In addition to the competing
Rains and
Weston soils on similar landforms, these are the
Bibb,
Leaf,
Mantachie,
Pheba,
Prentiss,
Savannah, and
Stough soils.
Bibb and Mantachie soils are on lower landforms and do not have
an argillic horizon. Leaf soils are on similar landforms, but
have more clay. Pheba, Prentiss, Savannah, and Stough soils are
on higher landforms and are better drained.
DRAINAGE AND PERMEABILITY: Poorly drained; slow to very slow
runoff; moderate to moderately slow permeability.
USE AND VEGETATION: Chiefly in woodland and pasture; some
cleared areas are used for growing corn, cotton, oats, and hay
crops. Common forest trees are water oak, maple, sweetgum, ash, cypress, bay, and some pine.
DISTRIBUTION AND EXTENT: Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, and
Virginia. The series is of large extent.
MLRA OFFICE RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Ouachita Parish, Louisiana; 1903.