LOCATION TOMOKA FLEstablished Series
TAXONOMIC CLASS: Loamy, siliceous, dysic, hyperthermic Terric Haplosaprists
TYPICAL PEDON: Tomoka muck--improved pasture.
(Colors are for moist soil.)
Op--0 to 5 inches; very dark brown (10YR 2/2) rubbed and pressed, sapric material (muck); about 15 percent fiber, 5 percent rubbed; moderate, medium granular structure; friable; many fine roots; sodium pyrophosphate extract is brown (10YR 5/3); extremely acid 3pH 4.2 in 0.O1M calcium chloride; clear smooth boundary.
Oa1--5 to 13 inches; dark reddish brown (5YR 2/2) rubbed and pressed, sapric material (muck); about 30 percent fiber, 5 percent rubbed; moderate medium granular structure; friable; common fine roots; about 10 percent mineral as light gray (10YR 6/1) sand streaks; sodium pyrophosphate extract is brown (10YR 5/3); extremely acid (pH 4.2 in 0.O1M calcium chloride; gradual smooth boundary.
Oa2--13 to 27 inches; black (10YR 2/1), black (5YR 2/1) rubbed and pressed, sapric material (muck); about 20 percent fiber, 5 percent fiber rubbed; weak coarse subangular blocky structure; friable; common fine roots; about 10 percent mineral material; sodium pyrophsophate extract is dark brown (10YR 3/3); extremely acid (pH 4.4 in 0.01M calcium chloride; abrupt wavy boundary (Combined thickness of the Op and Oa horizons is 16 to 45 inches.)
2C1--27 to 31 inches; very dark gray (10YR 3/1) sand; common coarse faint dark gray (10YR 4/1) and light gray (10YR 6/1) streaks; single grain; loose; extremely acid (pH 4.3 in 0.01M calcium chloride; clear wavy boundary. (0 to 5 inches thick)
2C2--31 to 35 inches; gray (10YR 5/1) sand; single grained; loose; extremely acid (pH 4.3 in 0.01M calcium chloride; abrupt wavy boundary. (0 to 4 inches thick)
3C--35 to 46 inches; dark gray (10YR 4/1) sandy clay loam; few fine faint dark grayish brown mottles; weak coarse subangular blocky structure; friable; few crayfish burrows filled with gray sand; extremely acid (pH 3.4 in 0.01M calcium chloride; clear wavy boundary. (6 to 44 inches thick)
4C--46 to 55 inches; gray (10YR 5/1) sandy loam; common coarse faint dark gray (10YR 4/1) mottles; massive; friable; common sand and sandy clay loam lenses; extremely acid (pH 3.4 in 0.01M calcium chloride).
TYPE LOCATION: Brevard County, Florida; on Duda Ranch about 6 miles southwest of Cocoa, 1/8 mile south of north dike and 0.75 mile east of west dike, NE1/4NW1/4, sec. 26, T. 27 S., R. 35 E.
RANGE IN CHARACTERISTICS: Thickness of the organic material ranges from 16 to 45 inches. Reaction of the organic layer is less than 4.5 in 0.01M calcium chloride. Reaction of the mineral layer is extremely acid to strongly acid, and base saturation is less than 35 percent.
The Op or Oa horizon has hue of 5YR or 10YR, value of 2 or 3, and chroma of 3 or less; or is neutral with value of 2 or 3. The fiber content in the organic portion of the control section is less than 33 percent unrubbed, or more than 33 percent if its content is less than 10 percent of its volume after rubbing. Sodium pyrophsophate extract is pale brown (10YR 6/3), brown (10YR 5/3, 4/3), or dark brown (10YR 3/3).
The 2C horizon, where present, has hue of 10YR to 5Y, value of 2 to 6, and chroma of 2 or less. Texture is sand, fine sand or loamy sand. The 3C and 4C horizons have hue of 10YR to 5Y, value of 3 to 7, and chroma of 2 or less. Texture is sandy loam, fine sandy loam, or sandy clay loam. Weighted clay content of the upper 12 inches of the C horizons within the 51 inch control section is less than 35 percent.
COMPETING SERIES: This is the Kaliga series. Kaliga soils have more than 35 percent base saturation in the mineral horizon and are generally finer textured throughout the mineral horizon.
GEOGRAPHIC SETTING: Tomoka soils are on broad low flats, fresh water marshes and swamps. Gradients are less than 2 percent. They formed in hydrophytic nonwoody plant remains over sandy and loamy mineral material. Rainfall is about 55 inches annually and mean annual temperature is about 74 degrees F., near the type location.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Anclote,
Basinger,
Canova,
Chobee,
Delray,
Felda,
Floridana,
Holopaw,
Hontoon,
Manatee,
Myakka,
Pompano,
Samsula, and
St. Johns series. All of these soils are of mineral origin except for Hontoon and Samsula. Hontoon soils have organic layers to a depth of more than 51 inches. Samsula soils are sandy in the underlying mineral layers.
DRAINAGE AND PERMEABILITY: Tomoka soils are very poorly drained. Runoff is very slow. Permeability is moderate. In drained areas, a water control system regulates the water table according to plant needs. In undrained areas, the water table is at or on the surface of the soil except during extended dry periods.
USE AND VEGETATION: Some areas are cleared and used for truck, corn, sod crops and improved pasture. Uncleared areas are used for water storage and as a wildlife habitat. Native vegetation is sawgrass, lilies, reeds, sedges, myrtle and other aquatic plants. Cypress, red and white bay, maple and pond pine are common tree species.
DISTRIBUTION AND EXTENT: Central and southern portions of Peninsular Florida. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Brevard County, Florida; 1970.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Histic epipedon - the zone from the surface to a depth of 13 inches (the Op and Oa1 horizons).
Terric feature - organic materials less than 51 inches thick.