LOCATION DUETTE FLEstablished Series
TAXONOMIC CLASS: Sandy, siliceous, hyperthermic Entic Grossarenic Alorthods
TYPICAL PEDON: Duette sand--on a 1 percent convex slope in a vacant lot in Ft. Lauderdale (Colors are for moist soil).
A--0 to 3 inches; very dark gray (10YR 3/1) sand; weak fine granular structure; very friable; many fine roots; neutral; clear wavy boundary. (2 to 5 inches thick)
E1--3 to 8 inches; gray (10YR 6/1) sand; single grained; loose; common fine, medium, and coarse roots; many small gray (10YR 5/1) and white (10YR 8/1) splotches; neutral; gradual wavy boundary.
E2--8 to 50 inches; white (10YR 8/1) sand; single grained; loose; few fine to coarse roots; few to common very dark gray (10YR 3/1) to gray (10YR 5/1) streaks in old root channels; neutral; gradual wavy boundary. (Combined thickness of the E horizon ranges from 45 to 70 inches.)
EB--50 to 66 inches; light brownish gray (10YR 6/2) sand; single grained; loose; few medium roots; sand grains thinly coated with organic matter; few darker streaks in old roots channels; slightly acid; abrupt wavy boundary. (0 to 10 inches thick.)
Bh--66 to 80 inches; black (10YR 2/1) sand; massive; very friable; few medium roots; most sand grains well coated with organic matter; common clean sand grains; few large pockets weakly cemented Bh material; slightly acid.
TYPE LOCATION: Broward County, Florida; approximately 0.5 mile west of I-95, 1 block south of Broward Boulevard and 150 feet west of SW 27th Avenue; Ft. Lauderdale. NE 1/4, NE 1/4, NW 1/4, Sec. 8, T. 50 S., R. 42 E.
RANGE IN CHARACTERISTICS: Reaction ranges from very strongly acid to neutral in the A and E horizons and from extremely acid to slightly acid in the EB and Bh horizons.
The A or Ap horizon has hue of 10YR, value of 3 to 6, and chroma of 1 or 2. Texture is fine sand or sand.
The E horizon has hue of 10YR, value of 5 to 8, and chroma of 1 or 2. Streaks and splotches of organic matter depletions and accumulations range from none to common. Texture is fine sand or sand.
The EB horizon, where present, has hue of 10YR, value of 4 to 6, and chroma of 1 to 3. Texture is fine sand or sand.
The Bh horizon has hue of 5YR to 10YR, value of 2 to 4, and chroma of 1 or 4. Texture is fine sand or sand.
Some pedons have a BC horizon. Where present, it has hue of 7.5YR or 10YR, value of 3 to 7, and chroma of 2 to 4. Texture is sand or fine sand.
Some pedons have a C horizon. Where present, it hue of 10YR, value of 5 or 6, and chroma of 2 to 4. Texture is sand or fine sand.
COMPETING SERIES: This are the Deland and Hobe series in the same family. The well drained Deland soils and somewhat excessively drained Hobe soils are on higher positions and lack a seasonal high water table within 6 feet of the soil surface.
GEOGRAPHIC SETTING: Duette soils are on slightly elevated knolls and ridges in flatwoods areas on the Lower Coastal Plain of Florida. Slopes range from 0 to 5 percent and are generally convex. They formed in thick beds of sandy marine sediments. The climate is humid subtropical. The average annual precipitation ranges from 50 to 60 inches, and the average annual air temperature ranges from 70 to 74 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cassia, Immokalee, Myakka, Pomello, Pomona, and Tavares series. The somewhat poorly drained Cassia soils are on slightly lower positions and have a Bh horizon within 30 inches of the soil surface. The very poorly to poorly drained Immokalee, Myakka, and Pomona soils are on lower positions. In addition, Immokalee soils have a Bh horizon that is 30 to 50 inches deep while Myakka and Pomona soils have a Bh horizon within 30 inches of the surface and Pomona sols have an underlying Bt horizon. The somewhat poorly to moderately well drained Pomello soils are on similar positions and have a Bh horizon that is 30 to 50 inches deep. Tavares soils are on similar to slightly lower positions, are sandy throughout, and do not have a Bh horizon.
DRAINAGE AND PERMEABILITY: Moderately well drained; moderately rapid permeability in the Bh horizon.
USE AND VEGETATION: Most areas of Duette soils are in scrub vegetation and used for wildlife habitat. Some areas are used for building sites. The natural vegetation is chiefly sand pine, sand live oak, rosemary, sawpalmetto, running oak, pricklypear cactus, fetterbush, and pineland threeawn. Slash pine grows in some areas.
DISTRIBUTION AND EXTENT: Central Peninsular Florida. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama.
SERIES ESTABLISHED: Manatee County, Florida; 1980.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Ochric epipedon - the zone from the surface to 66 inches (A, E1, E2, and EB horizons).
Albic horizon - the zone from 3 to 66 inches (E1, E2, and EB horizons).
Spodic horizon - the zone from 66 to 80 inches (Bh horizon).
Duette soils were formerly mapped as a variant of the Pomello series or were included with the St. Lucie series in some of the older surveys.
The water table is usually at depths of 4 to 6 feet from 1 month to 4 months during the summer and fall months. It is below these depths most of the rest of each year. After heavy or prolonged rain it rises above these depths briefly.
Data: Soil Characterization Laboratory, IFAS, UF S28-3-(1-5), S66-29-(1-6); University of Florida, Gainesville, FL.