LOCATION BOARDMAN FLEstablished Series
TAXONOMIC CLASS: Fine-loamy, siliceous, active, hyperthermic Typic Endoaqualfs
TYPICAL PEDON: Boardman loamy sand--improved pasture.
Ap--0 to 5 inches; very dark gray (N 3/0) loamy sand; moderate medium granular structure; very friable; common fine roots; about 11 percent, by volume, weathered phosphatic limestone pebbles; moderately acid; clear wavy boundary. (4 to 6 inches thick)
E--5 to 16 inches; gray (10YR 5/1) gravelly loamy sand; moderate medium granular structure; very friable; few fine roots; about 25 percent, by volume, weathered phosphatic limestone pebbles; moderately acid; gradual wavy boundary. (8 to 14 inches thick)
Btg1--16 to 22 inches; gray (10YR 5/1) gravelly sandy loam; weak fine subangular blocky structure; friable; few fine roots; few faint clay films on faces of peds; about 17 percent, by volume, weathered phosphatic limestone pebbles; strongly acid; clear wavy boundary.
Btg2--22 to 34 inches; gray (10YR 5/1) sandy clay loam; moderate medium subangular blocky structure; firm; few fine roots; few faint clay films on faces of peds; about 6 percent, by volume, weathered phosphatic limestone pebbles; few fine distinct very pale brown (10YR 7/3) masses of iron accumulation; very strongly acid; clear wavy boundary.
Btg3--34 to 45 inches; gray (10YR 5/1) sandy clay; moderate medium subangular blocky structure; firm; few fine roots; common faint clay films on faces of peds; about 5 percent, by volume, weathered phosphatic limestone pebbles; few fine and medium distinct white (10YR 8/1) calcareous nodules; few fine distinct very pale brown (10YR 7/3) masses of iron accumulation; very strongly acid; clear wavy boundary. (Combined thickness of the Btg horizons range from 26 to 40 inches)
BCg--45 to 56 inches; gray (N 6/0) sandy clay; weak fine subangular blocky structure; firm; few fine soft white (10YR 8/1) calcareous nodules about 2 mm in size; few medium distinct very pale brown (10YR 7/3) masses of iron accumulation and common medium faint light gray (10YR 7/1) areas of iron depletions; very strongly acid; clear wavy boundary. (10 to 16 inches thick)
2Cg--56 to 68 inches plus; gray (10YR 6/1) clay; massive; very firm; few fine white (10YR 8/1) soft and hard limestone nodules 2 to 8 mm in size; few fine weathered phosphatic pebbles; few fine and medium distinct pale olive (5Y 6/3) masses of iron accumulation and few medium distinct greenish gray (5GY 6/1) areas of iron depletions; very strongly acid.
TYPE LOCATION: Marion County, Florida. Approximately 0.75 mile west of the intersection of Interstate Highway 75 and Dungarvin Road, and about 500 feet south of Dungarvin Road. NE 1/4, SE 1/4, Sec. 23, T. 12 S., R. 20 E.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 50 to 74 inches in depth. The content of weathered rock fragments or pebbles, 2 to 76 mm in size, range from 5 to 25 percent, by volume, in the A, E, and Btg horizons. Below these horizons, the content of rock fragments or pebbles range from 0 to 15 percent, by volume. Reaction is very strongly acid or strongly acid throughout except where the surface has been limed.
The A or Ap horizon has hue of 10YR, value of 3 or 4, and chroma of 1 or 2; or it is neutral with value of 3 or 4. Texture is sand, fine sand, loamy sand, loamy fine sand, or their gravelly analogs.
The E horizon has hue of 10YR, value of 5 to 7, and chroma of 1 or 2; or it is neutral with value of 5 or 6. Texture is sand, fine sand, loamy sand, loamy fine sand, or their gravelly analogs.
The upper part of the Btg horizon has hue of 10YR, value of 4 to 6, and chroma of 1; or is neutral with value of 4 to 6. Texture is loamy sand, loamy fine sand, sandy loam, or their gravelly analogs.
The lower part of the Btg horizon has the same range of colors as the upper part. Redoximorphic features in shades of gray, yellow, white, or brown range from few to many. Texture is sandy clay loam, sandy clay, or their gravelly analogs.
The BC horizon has hue of 10YR, value of 4 to 7, and chroma of 1 or 2; or is neutral with value of 5 to 7. Redoximorphic features in shades of yellow, brown, or gray range from few to many. Texture is sandy clay or clay.
The 2Cg horizon has hue of 10YR to 5GY, value of 5 to 7, and chroma of 1 or less; or there is no dominant color and it is mixed in shades of gray, brown, or yellow. Texture is sandy clay or clay.
COMPETING SERIES: There are no known series in the same family. The Tuscawilla series is in a closely related family. The very poorly drained and poorly drained Tuscawilla soils are superactive and have Calcic horizons.
GEOGRAPHIC SETTING: Boardman soils are on upland side slopes of the Coastal Plain. Slopes range from 5 to 20 percent. They formed in sandy and clayey marine sediments. The climate is humid subtropical. The average annual precipitation ranges from 54 to 64 inches and average annual temperature ranges from 70 to 74 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Blichton, Fellowship, Flemington, Kanapaha, Lochloosa, Micanopy, and Wacahoota soils. All of these but the Wacahoota soils have less than 5 percent, by volume, rock fragments 2 mm to 76 mm in size in the soil. Blichton and Wacahoota soils are on lower positions and have sandy surface and subsurface horizons 20 to 40 inches in thickness. In addition, Blichton soils are very poorly drained and have more than 5 percent plinthite in the lower argillic horizon and low base status. The very poorly drained and poorly drained Fellowship soils are on similar to lower positions have umbric epipedons and have clayey control sections. Flemington soils are on similar positions and have more clay in the control section. Kanapaha soils are on similar to lower positions and have sandy surface and subsurface horizons 40 to 80 inches in thickness. The somewhat poorly drained Lochloosa and Micanopy soils are on higher positions. In addition, Lochloosa soils have sandy surface and subsurface horizons 20 to 40 inches in thickness and Micanopy soils have more clay in the control section.
DRAINAGE AND PERMEABILITY: Poorly drained; slow permeability.
USE AND VEGETATION: Most of this soil is in woodlands. Some small areas have been cleared and used primarily for improved pasture or for special crops such as tomatoes, cabbage, and watermelons. Natural vegetation consists of loblolly pine, slash pine, longleaf pine, hickory, magnolia, laurel oak, water oak, sweetgum, maple, dogwood, and redbud.
DISTRIBUTION AND EXTENT: Peninsular Florida, primarily on the Ocala Uplift. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama.
SERIES ESTABLISHED: Marion County, Florida; 1974.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Ochric epipedon - the zone from 0 to 16 inches (Ap and E horizons).
Argillic horizon - the zone from 16 to 56 inches (Btg1, Btg2, Btg3, and BCg).
These soils are saturated to depths of less than 10 inches for periods ranging from 1 to 4 months.