LOCATION BOCA FL

Established Series
Rev. GRB-MFV-AMS
08/2022

BOCA SERIES

The Boca series consists of moderately deep, poorly drained and very poorly drained soils that formed in sandy and loamy marine sediments deposited over limestone bedrock. Boca soils are on low broad flats, poorly defined drainageways, depressions, and adjacent tidal flats in areas of the flatwoods. Slopes are linear to slightly convex or concave and range from 0 to 2 percent. Near the type location, the mean annual precipitation is about 1397 millimeters (55 inches), and the mean annual temperature is about 22 degrees C (72 degrees F).

TAXONOMIC CLASS: Loamy, siliceous, superactive, isohyperthermic Arenic Endoaqualfs

TYPICAL PEDON: Boca fine sand is in a flat nearly level pasture on a tread of a terrace at an elevation of 3 meters (10 feet) above mean sea level. (Colors are for moist soil).

Ap--0 to 18 centimeters (0 to 7 inches); dark gray (10YR 4/1) fine sand; single grain; loose; many fine and medium roots; moderately acid; clear wavy boundary. [8 to 23 centimeters (3 to 9 inches) thick]

Eg--18 to 33 centimeters (7 to 13 inches); light gray (10YR 7/1) fine sand; many medium distinct very dark gray (10YR 3/1) mottles; single grain; loose; moderately acid; clear wavy boundary. [10 to 56 centimeters (4 to 22 inches) thick]

EB--33 to 64 centimeters (13 to 25 inches); very pale brown (10YR 7/3) fine sand; single grain; loose; few fine distinct brownish yellow (10YR 6/6) and common fine distinct yellowish brown (10YR 5/4) masses of oxidized iron; neutral; abrupt smooth boundary. [0 to 38 centimeters (0 to 15 inches) thick]

Btg--64 to 81 centimeters (25 to 32 inches); grayish brown (10YR 5/2) sandy clay loam; weak medium subangular blocky structure; friable; common fine and medium distinct yellowish brown (10YR 5/6) masses of oxidized iron; moderately alkaline; abrupt irregular boundary. [10 to 61 centimeters (4 to 24 inches) thick]

2C--81 to 86 centimeters (32 to 34 inches); decomposed white (10YR 8/1) to yellowish brown (10YR 5/8) rock, marl, sandy clay loam and sand mixed with limestone rock fragments; massive in place; friable; moderately alkaline; abrupt irregular boundary.

2R--86 centimeters (34 inches); limestone bedrock. This layer has two solution holes approximately 15 inches in diameter and extending from 40 to 82 inches below the surface. The solution holes contain sandy clay loam.

TYPE LOCATION: Broward County, Florida. Approximately 0.22 kilometers (0.14 mile) south of Royal Palm Boulevard and 0.065 kilometers (0.041 mile) east of Rock Island Road; located about 280 meters (918 feet) west and 718 meters (2,356 feet) south of the northeast corner of sec. 26, T. 48 S., R. 41 E.; USGS West Dixie Bend, Florida USGS quadrangle; Latitude and Longitude; 26 degrees, 15 minutes, 3.96 seconds North and 80 degrees, 13 minutes, 14.94 West; Datum WGS84.

RANGE IN CHARACTERISTICS:
Solum thickness and the depth to limestone bedrock ranges from 51 to 102 centimeters (20 to 40 inches), but in limestone solution pits within the pedon the depth ranges to 127 centimeters (50 inches) or more. Reaction ranges from strongly acid to slightly alkaline in the A, E, and EB horizons and from moderately acid to slightly alkaline in the Bt and C horizons.

A or Ap horizons:
Hue: 10YR and 2.5Y or Neutral
Value: 2 to 5
Chroma: 2 or less
Texture: sand or fine sand
Reaction: strongly acid to slightly alkaline

E or Eg horizons:
Hue: 10YR and 2.5Y or Neutral
Value: 5 to 8
Chroma: 4 or less
Texture: sand or fine sand
Reaction: strongly acid to slightly alkaline

EB horizons: (where present)
Hue: 7.5YR and 10YR
Value: 3 to 7
Chroma: 2 to 8
Texture: sand, fine sand, or loamy fine sand
Reaction: strongly acid to slightly alkaline
Redoximorphic features in shades of brown, yellow, or gray range from none to common.

Btg horizons:
Hue: 10YR, 2.5Y and 5Y or Neutral
Value: 4 to 6
Chroma: 4 or less
Texture: sandy loam, fine sandy loam, or sandy clay loam, with pockets or lenses of sand or loamy sand
Reaction: moderately acid to slightly alkaline
Some pedons have up to 5 percent coarse fragments of limestone.
Redoximorphic features in shades of gray, yellow, or brown range from none to common.

Btkg horizons: (where present)
Hue: 10YR, 2.5Y and 5Y or Neutral
Value: 4 to 6
Chroma: 4 or less
Texture: sandy loam, fine sandy loam, or sandy clay loam, with pockets or lenses of sand or loamy sand
Reaction: moderately acid to slightly alkaline

2C or 2Cg horizons: (where present)
Hue: 5GY, 10R, 2.5YR, 5YR,7.5YR, 10YR, 2.5Y and 5Y or Neutral
Value: 4 to 7
Chroma: 4 or less
Texture: sandy loam, fine sandy loam or sandy clay loam
Reaction: strongly acid to moderately alkaline
It is composed of mixed weathered and soft limestone fragments, and soft masses of calcium carbonate.

2Cr horizons: (where present)
Hue: 5GY, 10R, 2.5YR, 5YR,7.5YR, 10YR, 2.5Y and 5Y or Neutral
Value: 4 to 7
Chroma: 4 or less
Texture: loamy sand or sandy loam.
Reaction: moderately acid to slightly alkaline
It is composed of soft limestone that can be dug with a spade.

R horizons: composed of hard limestone bedrock

COMPETING SERIES:
These are Felda, Isles, and Pinellas series.
Felda soils have a solum thickness ranges from 76 to 203 centimeters (30 to 80 inches), lack limestone bedrock between the depths of 60 to 102 centimeters (24 to 40 inches) and are on similar positions.
Pinellas soils have a solum thickness ranges from 76 to 152 centimeters (30 to 60 inches), lack limestone bedrock between the depths of 60 to 102 centimeters (24 to 40 inches) and are on similar positions.
Isles soils have a solum thickness ranges from 102 to 152 centimeters (40 to 60 inches), lack limestone bedrock between the depths of 60 to 102 centimeters (24 to 40 inches) and are on similar positions.

GEOGRAPHIC SETTING:
Boca soils are on low broad flats, poorly defined drainageways, depressions, and adjacent tidal flats in areas of the flatwoods.
Parent material: moderately thick beds of sandy and loamy marine sediments over limestone.
Landscape: Lower Coastal Plains
Landform(s): Low broad flats, poorly defined drainageways, depressions, adjacent tidal flats on marine terraces
Hillslope profile position: None applicable
Geomorphic component: Dip, talf, and tread
Slopes: 0 to 2 percent
Elevation: 1 to 18 meters (3 to 60 feet)
Mean annual air temperature: 21 to 23 degrees C (70 to 74 degrees F)
Mean annual precipitation: 1,270 to 1,524 millimeters (50 to 60 inches)
Frost free duration: 300 to 365 days

GEOGRAPHICALLY ASSOCIATED SOILS: These include the competing Felda, Pompano, Basinger, Hallandale, Holopaw, Jupiter, Margate, Riviera, Pineda, Pinellas, Wabasso, Ft. Drum, Pople, Copeland, and Malabar series.
Basinger and Pompano soils lack argillic horizons, lack limestone within 203 centimeters (80 inches) and are on similar positions.
Hallandale and Jupiter soils have limestone at depths of 51 centimeters (20 inches) or less and are on similar positions.
Holopaw soils have sandy surface and subsurface layers 102 to 203 centimeters (40 to 80 inches) in thickness and are on similar positions.
Margate soils lack argillic horizons and are on similar positions.
Riviera soils have a glossic horizon and are on similar positions.
Felda, Pinellas, Pople, Ft. Drum, and Pineda soils do not have limestone within 203 centimeters (80 inches) of the surface and are on similar positions.
Wabasso soils have a spodic horizon, have an argillic horizon that does not rest on limestone and are on similar positions.
Copeland soils have an argillic horizon within a depth of 51 centimeters (20 inches), have limestone bedrock at a depth of 51 to 127 centimeters (20 to 50 inches), and are on similar positions.
Malabar soils have an argillic horizon at a depth of 102 to 178 (40 to 70 inches) and are on similar positions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: poorly drained and very poorly drained
Saturated hydraulic conductivity (Ksat): high to very high on A, E, and EB horizons and moderately high in the Btg and 2C horizons.
Permeability: rapid on A, E, and EB horizons and moderate permeability in the Btg and 2C horizons.
Surface runoff: negligible
Depth to seasonal high water table: The water table is within depths of 30 centimeters (12 inches) of the surface for 4 to 9 months during most years and is in the limestone during drier seasons. Depressions are covered by standing water 3 to 6 months or more each year.
Flooding frequency and duration: None applicable
Ponding frequency and duration: Frequently for long duration (3 to 6 months)

USE AND VEGETATION:
Most areas of Boca soils are used for rangeland. With adequate water control, some areas are used for truck crops, citrus, and pasture.
Native vegetation consists of gallberry, sawpalmetto, cabbage palmettos, slash pine, and an understory of pineland threeawn.

DISTRIBUTION AND EXTENT:
Major Land Resource Areas (MLRA): This soil mainly occurs in the Southern Florida Flatwoods (MLRA 155). It also occurs in the Southern Florida Lowlands (MLRA 156B), Florida Everglades and Associated Areas (MLRA 156A), and South Central Florida Ridge (MLRA 154).
Extent: Moderate extent

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama.

SERIES ESTABLISHED:
Broward County; Florida, 1973

REMARKS:
Temperature regime updated from hyperthermic to isohyperthermic 8-2022.

Particle size control section: 64 to 81 centimeters (25 to 32 inches)

In the isohyperthermic temperature regime, chroma up to 4 is tentatively permitted in the Bt horizon if the hue is 2.5Y or 5Y and if mottles are distinct or prominent.

There is a tidal phase map unit that has reaction of strongly alkaline; these areas need to be investigated because there could be saline/sodic properties.

Ponded and depressional phases need to be investigated to determine if a new series is necessary.

Diagnostic horizons and features recognized in this pedon:

Ochric epipedon - 0 to 64 centimeters [0 to 25 inches (Ap, E, EB horizons)]

Albic horizon - 18 to 33 centimeters [7 to 13 inches (E horizon)]

Argillic horizon - 64 to 81 centimeters [25 to 32 inches (Btg horizon)]

Soil Series was classified according to the 12th Edition of the Keys to Soil Taxonomy.

ADDITIONAL DATA:
There is no laboratory data for the Official Soil Series Description (OSD) typifying pedon however there is laboratory data from other counties on the National Soil Survey website at: http://ncsslabdatamart.sc.egov.usda.gov/querypage.aspx

OSD User Site ID: 1981FL606002

OSD User Pedon ID: 1981FL606002

National Cooperative Soil Survey
U.S.A.