LOCATION CHOBEE FL
Established Series
Rev. GRB-CAP-AMS
09/2017
CHOBEE SERIES
The Chobee series consists of very deep, very poorly drained, soils that formed in thick beds of loamy marine sediments. Chobee soils are on flatwoods in depressions, drainageways, low broad flats, and flood plains on marine terraces. Slopes range from 0 to 2 percent. 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: Fine-loamy, siliceous, superactive, hyperthermic Typic Argiaquolls
TYPICAL PEDON: Chobee loamy fine sand, in a citrus grove at an elevation of about 6.5 meters (22 feet) above mean sea level. (Colors are for moist soil).
Ap--0 to 13 centimeters (0 to 5 inches); black (10YR 2/1) loamy fine sand; weak fine subangular blocky structure; friable; many fine and medium roots; neutral; gradual wavy boundary. [10 to 48 centimeters (4 to 19 inches) thick]
Btg1--13 to 43 centimeters (5 to 17 inches); black (10YR 2/1) sandy loam; moderate medium subangular blocky structure; slightly sticky and slightly plastic; common fine and medium roots; few faint clay films on sand grains; neutral; clear wavy boundary.
Btg2--43 to 71 centimeters (17 to 28 inches); very dark gray (10YR 3/1) sandy clay loam; moderate medium subangular blocky structure; slightly sticky and slightly plastic; few fine roots; common faint clay films on ped faces; few fine prominent yellowish brown (10YR 5/8) and strong brown (7.5YR 5/6) masses of oxide iron in the matrix and along root channels; slightly acid; gradual wavy boundary.
Btg3--71 to 89 centimeters (28 to 35 inches); dark grayish brown (10YR 4/2) sandy loam; weak medium subangular blocky structure; slightly sticky and plastic; few fine roots; common faint clay films on ped faces and sand grains; common fine prominent yellowish brown (10YR 5/8) masses of oxidized iron; slightly acid; clear wavy boundary.
Btg4--89 to 117 centimeters (35 to 46 inches); gray (5Y 6/1) sandy loam; medium fine subangular blocky structure; slightly sticky and slightly plastic; few fine prominent yellowish brown (10YR 5/8) masses of oxidized iron; common medium distinct dark gray (10YR 4/1) areas of iron depletions; slightly acid; gradual smooth boundary. [Combined thickness of the Btg horizons range from 102 to 147 centimeters (40 to 58 inches) thick]
BCg--117 to 137 centimeters (46 to 54 inches); gray (5Y 6/1) loamy fine sand; weak fine subangular blocky structure; slightly sticky; slightly acid; gradual wavy boundary. [0 to 46 centimeters (0 to 18 inches) thick]
Cg--137 to 203 centimeters (54 to 80 inches); greenish gray (5GY 5/1) loamy fine sand; massive; slightly sticky; moderately alkaline.
TYPE LOCATION: Indian River County, Florida; about 2.8 kilometers (1.75 miles) south of Florida State Road 60, and 0.8 kilometers (0.5 miles) west of Range Line Road; about 2980 feet west and 451 feet south of the northwest corner of sec. 13, T. 33 S., R. 38 E.; Latitude and Longitude; 27 Degrees 36 minutes 56.75 seconds, north and 81 degrees 29 minutes 20.05 seconds, west; WGS84.
RANGE IN CHARACTERISTICS:
Soil moisture control section: 10 to 30 centimeters (4 to 12 inches)
Solum thickness range: 102 to 147 centimeters (40 to 58 inches)
Aquic conditions: 0 to 15 centimeters (0 to 6 inches)
Mollic epipedon thickness: 18 to 91 centimeters (7 to 36 inches)
Depth to argillic horizon: 10 to 48 centimeters (4 to 19 inches)
Depth to endosaturation: 0 to 15 centimeters (0 to 6 inches)
Particle sized control section (weighted averages):
Clay content: 10 to 35 percent, but must have over 20 percent clay on average
Fine sand content: 25 to 60 percent
Silt content: 0 to 28 percent
Rock fragments: 0 to 14 percent
A or Ap horizon:
Hue: 10YR or Neutral
Value: 2 or 3, or 2.5 or 3
Chroma: 1 or 2
Texture: loamy sand, loamy fine sand, sandy loam, or fine sandy loam.
Clay content: 0 to 12 percent
Rock fragments: 0
Reaction: slightly acid or neutral (pH 6.1 to 7.3)
In depressional and flood plain areas, some pedons have thin muck surfaces less than 18 centimeters (7 inches) thick.
Btg horizon:
Hue: 10YR, 2.5Y, 5Y, or 5GY, or Neutral
Value: 2 or 3, when part of the mollic epipedon, otherwise 4 to 7
Chroma: 1 or 2
Texture: sandy loam, fine sandy loam, and sandy clay loam, some pedons may contain loamy sand, or loamy fine sand in the lower parts of the Btg horizon.
Redoximorphic features: depletions or concentrations, 1 to 20 percent, and fine or medium in size in the lower part of some pedons
Clay content: 10 to 35 percent
Rock or shell fragments: 0 to 14 percent
Reaction: slightly acid to moderately alkaline (pH 6.1 to 8.4)
BCg horizon, where present:
Hue: 10YR, 2.5Y, 5Y, or 5GY, or Neutral
Value: 2 to 7, or 2.5 or 3
Chroma: 1 or 2
Texture: sandy loam, fine sandy loam, sandy clay loam, loamy sand, or loamy fine sand.
Clay content: 10 to 35 percent
Rock or shell fragments: 0 to 14 percent
Reaction: slightly acid to moderately alkaline (pH 6.1 to 8.4)
Cg horizon:
Hue: 10YR or 2.5Y
Value: 4 to 7
Chroma: 1 to 4
Hue: 5GY
Value: 5 or 6
Chroma: 1
Higher colored chroma is due to stripped sand grains.
Texture: loamy sand, loamy fine sand, sandy loam, or fine sandy loam.
Clay content: 10 to 35 percent
Rock or shell fragments: 0 to 14 percent
Reaction: neutral to moderately alkaline (pH 6.6 to 8.4)
COMPETING SERIES: This is the
Copeland series.
Copeland soils are moderately deep to limestone bedrock.
GEOGRAPHIC SETTING:
Parent material: Loamy marine sediments
Landscape: Lower Coastal Plain
Landform(s): flatwoods, low broad flats, depressions, drainageways, and flood plains on marine terraces.
Hillslope position: none
Geomorphic component: talf and dip
Slopes: 0 to 2 percent
Elevation: 0 to 31 meters (0 to 100 feet)
Mean annual temperature: 21 to 25 degrees C (70 to 77 degrees F)
Mean annual precipitation: 1270 to 1524 millimeters (50 to 60 inches)
Frost-free period: 345 to 365 days.
GEOGRAPHICALLY ASSOCIATED SOILS:
Bradenton,
Felda,
Riviera, and
Winder soils lack mollic epipedons, are poorly drained, and are on slightly higher landform positions.
Manatee soils have coarse-loamy control sections, with less than 20 percent clay, and are in similar landform positions.
Wabasso soils lack mollic epipedons, have spodic horizons, and occur on similar to slightly higher landform positions.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: very poorly drained
Saturated hydraulic conductivity (KSAT): moderately low to low throughout
Permeability: slow to very slow throughout
Runoff: negligible to very low
Depth to seasonal high water table: 0 to 15 centimeters (0 to 6 inches) of the surface for about 4 months during most years, and within 15 to 30 centimeters (6 to 12 inches) most of the rest of the year.
Ponding: 0 to 30 centimeters (0 to 12 inches) for up to 30 days
USE AND VEGETATION:
Under natural conditions Chobee soils are used for water quality and wildlife habitat, some areas are drained and used principally for citrus, pasture, and range.
Potential native vegetation consisting of arrowhead, cabbage palm, carolina willow, cypress, maidencane, pickerelweed, lilies, sawgrass, smartweed, wax myrtle, slash pine, water oak, understory of ferns and water tolerant grasses, and scattered swamp maples in treeless areas. Some areas have a growth of ash, gum, maple, and cypress.
DISTRIBUTION AND EXTENT:
Major Land Resource Area (MLRA): Southern Florida Flatwoods (MLRA 155), South Central Florida Ridge (MLRA 154), Southern Florida Lowlands (MLRA 156B), Everglades and Associated Areas (MLRA 156A), Eastern Gulf Coast Flatwoods (MLRA 152A), and North Central Florida Ridge (MLRA 138).
Extent: Moderate
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama.
SERIES ESTABLISHED:
Okeechobee County, Florida; 1970.
REMARKS:
Particle size control section: 13 to 63 centimeters (5 to 25 inches)
Diagnostic horizons and features recognized in this pedon:
Mollic epipedon - 0 to 71 centimeters (0 to 28 inches) (Ap, Btg1 and Btg2 horizons)
Argillic horizon - 13 to 117 centimeters (5 to 46 inches) (Btg1, Btg2, Btg3, Btg4 horizons)
Aquic conditions - 0 to 203 centimeters (0 to 80 inches)
Endosaturation - 0 to 15 centimeters (0 to 6 inches) during the wet season; 0 to 30 centimeters (0 to 12 inches) during the rest of the year
Soil classified according to the 12th Edition of the Keys to Soil Taxonomy.
This soil was formerly included in the Manatee series.
ADDITIONAL DATA:
Laboratory data is available on the National Soil Survey website at: http://ncsslabdatamart.sc.egov.usda.gov/querypage.aspx
OSD User Site ID: 1984FL061005
OSD Pedon Site ID: 1984FL061005
National Cooperative Soil Survey
U.S.A.