LOCATION POMPANO FLEstablished Series
TAXONOMIC CLASS: Siliceous, hyperthermic Typic Psammaquents
TYPICAL PEDON: Pompano fine sand--rangeland. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 6 inches; dark gray (10YR 4/1) fine sand; weak fine granular structure; very friable; many fine roots; slightly acid; abrupt smooth boundary.
A--6 to 15 inches; grayish brown (10YR 5/2) fine sand; single grained; loose; many fine roots; few fine distinct strong brown (7.5YR 5/6) masses of iron accumulation; moderately acid; gradual wavy boundary. (Combined thickness of the A horizons ranges from 2 to 21 inches in thickness)
C--15 to 35 inches; very pale brown (10YR 7/3) fine sand, single grained; loose; few fine roots; few fine distinct yellow (10YR 7/6) masses of iron accumulation; moderately acid; gradual wavy boundary.
Cg--35 to 80 inches; light gray (10YR 7/1) fine sand; single grained; loose; moderately acid.
TYPE LOCATION: Polk County, Florida; approximately 1,800 feet south and 1,200 feet east of the northwest corner of sec. 25, T. 29 S., R. 25 E.
RANGE IN CHARACTERISTICS: Soil reaction ranges from very strongly acid through slightly alkaline throughout. The amount of silt plus clay ranges from about 1 to 10 percent in the 10- to 40-inch control section.
The A or Ap horizon has hue of 10YR or 2.5Y, value of 2 to 5, and chroma of 1 or 2; or it is neutral with value of 2 to 5. Where the value is 3.5 or less, the horizon is less than 6 inches thick. Texture is sand or fine sand.
The C or Cg horizon has hue of 10YR to or 2.5Y value of 5 to 8, and chroma of 1 to 3, 5Y to 5GY, value of 5 to 7, and chroma of 2 or less; or it is neutral with value of 5 to 8. The higher chromas are due to either uncoated sand grains or thin coatings of organic matter on sand grains. Texture is sand or fine sand. Limestone or shell fragments are present below depths of more than 40 inches in some pedons.
COMPETING SERIES: These include the
Dianola,
Kesson, and
Tatton series in the same family. Dianola and Tatton soils have more than 10 percent silt plus clay in the 10- to 40-inch control section. In addition, Dianola soils are poorly drained. Kesson soils are subject to tidal flooding and have salinity exceeding 16 mmhos/cm.
GEOGRAPHIC SETTING: Pompano soils are in poorly defined drainageways, broad flats, and in depressions. Slopes range from 0 to 2 percent. They formed in thick beds of marine sands. The average annual temperature ranges from 72 to 74 degrees F., and the average annual precipitation ranges from 48 to 52 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the Adamsville, Anclote, Basinger, Chobee, EauGallie, Felda, Hallandale, Immokalee, Manatee, Margate, Myakka, Placid, Riviera, Valkaria, and Wabasso series. The somewhat poorly drained Adamsville soils are on slightly higher ridges. Anclote soils have a mollic epipedon. Basinger soils have Bh horizons within depths of 10 to 40 inches. Chobee and Manatee soils have a mollic epipedon and Bt horizons. EauGallie, Immokalee, Myakka, and Wabasso soils are Spodosols. The poorly drained Felda and Riviera soils are arenic and underlain by argillic horizons. Hallandale soils are shallow to limestone bedrock. The poorly drained Margate soils are moderately deep to limestone bedrock. Placid soils have an umbric epipedon. Valkaria soils have high chroma Bw horizons.
DRAINAGE AND PERMEABILITY: Very poorly drained; rapid or very rapid permeability, but internal drainage is impeded by a very shallow water table.
USE AND VEGETATION: Most areas of this soil is used for rangeland. Where drained, it is used for growing truck crops, citrus fruits, and improved pasture. Natural vegetation consists of palmetto, widely spaced cypress, gum, and slash pine, and native grasses.
DISTRIBUTION AND EXTENT: Peninsular Florida. The series is of large extent.
MLRA OFFICE RESPONSIBLE: Auburn, Alabama.
SERIES ESTABLISHED: Everglades Project Area, Florida; 1945.
REMARKS: The water table is at depths of less than 10 inches for 2 to 6 months each year. Even during the drier months it is within depths of 30 inches for more than 9 months each year. In depressed areas the water table is above the soil surface for more than 3 months each year.