LOCATION MULAT FL
The Mulat series consists of poorly drained soils that formed in loamy and acid marine sediments. These soils occur on low-lying and flatwood areas of the lower coastal plain. Slopes are 0 to 2 percent.
TAXONOMIC CLASS: Loamy, siliceous, subactive, thermic Arenic Endoaquults
TYPICAL PEDON: Mulat loamy fine sand on a slightly concave 0.5 percent slope. (Colors are for moist soil unless otherwise stated. Soil below the depth of 10 inches was wet when described.)
A1--0 to 4 inches; black (10YR 2/1) loamy fine sand; weak, medium granular structure; very friable; many fine and few medium roots; strongly acid; gradual smooth boundary. (2 to 5 inches thick)
A2--4 to 10 inches; dark gray (10YR 4/1) loamy fine sand; few fine faint very dark gray mottles; common fine distinct brown (7.5YR 4/4) root stains; weak fine granular structure; very friable; common fine and few medium roots; strongly acid; gradual smooth boundary. (0 to 6 inches thick)
Eg1--10 to 17 inches; grayish brown (10YR 5/2) fine sand; common medium distinct dark yellowish brown (10YR 4/4) and few fine distinct brown mottles; single grained; non-sticky; few fine roots; strongly acid; gradual smooth boundary.
Eg2--17 to 27 inches; light brownish gray (10YR 6/2) sand; common medium distinct yellowish brown (10YR 5/6) and few fine distinct brown mottles; single grained; non-sticky; few very fine roots; strongly acid; gradual wavy boundary. (Combined thickness of the Eg horizon is 16 to 32 inches)
Btg1--27 to 34 inches; gray (10YR 5/1) fine sandy loam; common coarse distinct yellowish brown (10YR 5/6) and common coarse faint grayish brown (10YR 5/2) mottles; weak medium subangular blocky structure; slightly sticky; few very fine roots; sand grains bridged and coated with clay; strongly acid; gradual smooth boundary.
Btg2--34 to 49 inches; gray (10YR 5/1) fine sandy loam; common medium distinct yellowish brown (10YR 5/6) and common medium faint dark gray (10YR 4/1) mottles; weak medium subangular blocky structure; slightly sticky; sand grains bridged and coated with clay; few very fine roots; strongly acid; clear smooth boundary. (Combined thickness of the Btg horizon is 12 to 25 inches)
Cg1--49 to 57 inches; pinkish gray (7.5YR 6/2) sand; few fine faint light brownish gray mottles; single grained, non-sticky; sand grains bridged and coated with clay; strongly acid; gradual smooth boundary.
Cg2--57 to 71 inches; light brownish gray (10YR 6/2) sand; few fine faint pinkish gray mottles; single grained; non-sticky; strongly acid; gradual smooth boundary.
Cg3--71 to 80 inches; gray (10YR 5/1) fine sand; common medium faint dark gray (N 4/0) mottles; single grained; non-sticky; strongly acid. (The combined Cg horizon is 15 or more inches thick)
TYPE LOCATION: Santa Rosa County, Florida; 200 feet east of State Highway 281, 2 1/4 miles south of Interstate 10 in the south 1/2
of Section 15, T. 1 S., R. 28 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 40 to 65 inches. Reaction ranges from extremely acid to medium acid in all horizons except the surface where limed.
The A or Ap horizon has hue of 10YR, value of 2 or 3, and chroma of 1 or 2; or value of 4, and chroma 1. The Eg horizon has hue of 10YR, values of 5 through 7, and chroma of 1 or 2; or value of 4, and chroma of 2, with or without mottles in shades of yellow and brown. Combined thickness of the A and Eg horizons ranges from 20 to 40 inches. Texture is loamy sand, loamy fine sand, fine sand, or sand.
The Btg horizon has hue of 10YR, value of 4 to 7, and chroma of 1 or 2; or hue of 5Y, value of 4 to 6, and chroma of 1 or 2; or it is neutral with value of 4 to 6. Mottles are in various shades of red, yellow, brown, and gray, and are fine to medium in size. Weighted average clay content ranges from 14 to 22 percent in the Btg horizon. Silt content is less than 20 percent. Texture is sandy loam, fine sandy loam, or sandy clay loam. Some pedons have a BE horizon of loamy sand. It has the same color range as the Btg horizon and ranges up to 6 inches thick. Some pedons have a BCg horizon of dominantly loamy sand or loamy fine sand but includes sandy loam. Colors are similar to the Btg horizon and thickness ranges up to 12 inches.
The Cg horizon has hue of 10YR or 5Y, value of 5 to 7, and chroma of 1 or 2; or hue of 7.5YR, value of 6, and chroma of 2; or it is neutral (N) with value of 5 or 6. Texture is sand, fine sand or loamy sand.
COMPETING SERIES: This is the
Williman series. Williman soils have moderate permeability, more clay in the argillic horizon and a thicker solum. Similar series in other families are
Ogeechee, Plummey, and
Rains, Murad and
Plummer soils have grossarenic epipedons. Myatt, Ogeechee and Rains do not have arenic epipedons.
GEOGRAPHIC SETTING: Mulat soils are on low-lying areas of the Gulf Coastal flatwoods. Slope ranges from 0 to 2 percent. These soils formed in thick beds of loamy acid marine sediments. Near the type location, average annual precipitation is about 65 inches, and the mean annual air temperature is about 67 degrees F., (19 degrees C).
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Rutlege series. Garcon and Pactolus soils are somewhat poorly drained. In addition, Pactolus soils do not have a Bt horizon. Lynchburg and Rains soils have an argillic horizon that begins between depths of 10 to 20 inches and extends to a depth greater than 60 inches. Rutlege soils are sandy to depths of more than 80 inches and have an umbric epipedon.
DRAINAGE AND PERMEABILITY: Mulat soils are poorly drained. Permeability is rapid in the A and C horizons and moderately slow to slow in the Bt horizon. The water table is within a depth of 12 inches for 2 to 8 months of the year under natural conditions and varies between depths of 12 to 30 inches during droughty periods. Areas with poor outlets are ponded or have water above the soil surface for a period of less than 1 month during the wettest season.
USE AND VEGETATION: Most areas are in woodland or open flatlands. A few drained areas are used for crops and pasture. The natural vegetation is slash and longleaf pine, inkberry (gallberry), waxmyrtle, pineland threeawn, dwarf huckleberry, and bluestems. Some of the wetter areas contain baldcypress and pitcher plants.
DISTRIBUTION AND EXTENT: Northern portion of Florida and possibly southern Alabama and Georgia. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Santa Rosa County; Florida, 1978.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon--the zone from the surface of the soil to a depth of 10 inches (A1, and A2 horizons).
Albic horizon--the zone from 10 to 27 inches (Eg1, and Eg2 horizons).
Argillic horizon--the zone from approximately 27 to 49 inches (Btg1, and Btg2 horizons).
National Cooperative Soil Survey