LOCATION FOLLET TXEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, nonacid, hyperthermic Sodic Endoaquents
TYPICAL PEDON: Follet clay loam--on a smooth level 0.1 percent slope, in grass.
(Colors are for wet soil unless otherwise stated.)
Ag--0 to 4 inches; gray (10YR 5/1) clay loam, massive; flows easily between fingers and leaves small residue in hand when squeezed; slightly sticky; common fine and medium roots; strongly saline; slightly alkaline; clear smooth boundary. (4 to 15 inches thick)
Cg1--4 to 22 inches; gray (10YR 6/1) clay loam, massive; firm, slightly sticky and slightly plastic; few fine roots; common fine distinct brownish yellow and brown iron concentrations; strongly saline; moderately alkaline; gradual smooth boundary. (10 to 24 inches thick)
Cg2--22 to 48 inches; gray (10YR 6/1) clay loam, massive; firm, slightly sticky and slightly plastic; common fine distinct brownish yellow and brown iron concentrations; strongly saline; moderately alkaline; gradual smooth boundary. (8 to 30 inches thick)
Cg3--48 to 62 inches; gray (10YR 6/1) clay loam, massive; firm, slightly sticky and slightly plastic; common fine distinct brown and yellowish brown iron concentrations; strongly saline; moderately alkaline.
TYPE LOCATION: Brazoria County, Texas; about 15 miles east of Angleton; 7780 feet southwest along Intracoastal Waterway from intersection of Intracoastal Waterway and Bastrop Bayou; 6050 feet east along dredged channel; 400 feet northeast along small bayou, site is 50 feet south of Bayou.
RANGE IN CHARACTERISTICS: These soils have a peraquic moisture regime. In some pedons the surface layer has an n-value of more than 0.7 but it does not extend to a depth of 20 inches. Some pedons have a peaty or mucky surface 2 to 8 inches thick. Reaction ranges from neutral through moderately alkaline throughout the pedon. The electrical conductivity ranges from 20 to 60 mmhos and the exchangeable sodium percent is more than 15 percent throughout the control section.
The Ag horizon has hue of N or 10YR, value of 3 to 7, and chroma of 2 or less. Where the value is 3, the thickness is less than 10 inches. Redox features range from none to common in shades of gray, yellow, and brown. The texture is mainly fine sandy loam through clay loam but ranges to loamy fine sand.
The Cg horizon has hue of N or 10YR, value of 4 to 8, and chroma of less than 2. Redox features in shades of gray, brown, or yellow range from none to common. Some have few to common black concretions. The texture is loam, sandy clay loam, silty clay loam, or clay loam, and most pedons are stratified.
Some pedons have 2C horizons below 60 inches that have the same color range as the A and C horizons, but individual strata are reddish, brownish or yellowish. Texture ranges from loam to clay and is stratified with more clayey and more sandy layers.
COMPETING SERIES: There are no competing series in the same family. Other similar soils are the Barbary, Barrada, Gentilly, Karankawa, Levy, Scatlake, Tatlum, Tracosa, and Veston series. Barbary, Barrada, Gentilly, Levy, Scatlake, and Tatlum soils have n-values of more than 0.7 between 8 and 20 inches of the soil surface. Karankawa soils have a coarse-loamy particle-size control section. Tracosa soils have a fine particle-size control section. Veston soils do not have a peraquic moisture regime.
GEOGRAPHIC SETTING: Follet soils are on broad, flat tidal areas in coastal marshes adjacent to bays and bayous. They are inundated with 2 to 12 inches of water during the daily high tides. One or two inches of water usually remain on the surface during low tides. Slopes are less than 0.5 percent. Mean annual precipitation ranges from 40 to 65 inches. Mean annual temperature is 72 degrees to 75 degrees F. Thornthwaite annual P-E indices exceed 50.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Karankawa, Tatlum, Tracosa, and Veston series and the Harris, Mustang, Galveston, and Narta series. Harris, Mustang, Galveston, Narta, and Veston soils occur on a slightly higher position and have a water table that is below the soil surface at least part of the time during the year. In addition, Mustang and Galveston soils have sandy control sections and Narta soils are clayey and have natric horizons. Karankawa, Tatlum and Tracosa soils are on positions similar to Follet soils.
DRAINAGE AND PERMEABILITY: Follet soils are very poorly drained. Runoff is negligible and permeability is very slow. A permanent water table is at or slightly above the soil surface during low tides and ranges to 12 inches above the surface during high tides.
USE AND VEGETATION: Used mainly as wildlife land. A few areas are grazed by livestock. Native vegetation is dominated by smooth cordgrass. Other plants include Salicornia and Batis species.
DISTRIBUTION AND EXTENT: Along the upper Gulf Coast in southeast Texas (MLRA 150B). The series is inextensive.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Brazoria County, Texas; 1978.
REMARKS: These soils were formerly classified as a miscellaneous land type, Tidal flat, or were included with the Veston series. This soil has halic properties as described by J. A. Coover et al., in SSSA Proceedings, 1975.
Classification changed from Typic Haplaquents to Sodic Endoaquents 11/2000 based on typifying pedon description. Further study of the series is needed to verify classification.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 4 inches (Ag horizon)
Peraquic moisture regime - water table at or near surface at all times.
ADDITIONAL DATA: NSSL data from Brazoria County, TX (S78TX-039-094).
TAXONOMIC VERSION: Soil Taxonomy, Second Edition, 1999.