LOCATION FRYDEK                  TX

Established Series
KBH, JKW, AKS
07/2019

FRYDEK SERIES

The Frydek series consists of very deep, poorly drained, very slowly permeable soils that formed in loamy alluvial deposits derived from igneous, metamorphic and sedimentary rock of the Beaumont Formation. These nearly level to very gently sloping soils are in open depressions on coastal plains. Slope ranges from 0 to 1 percent. Mean annual air temperature is about 20.6 degrees C (69 degrees F) and mean annual precipitation is about 1143 mm (50 in).

TAXONOMIC CLASS: Fine, smectitic, hyperthermic Chromic Vertic Epiaqualfs

TYPICAL PEDON: Frydek clay loam in an area of Frydek clay loam, 0 to 1 percent slopes, occasionally ponded--pastureland. (Colors are for moist soil unless otherwise stated.)

A--0 to 18 cm (0 to 7 in); dark grayish brown (10YR 4/2) clay loam, grayish brown (10YR 5/2) dry; weak fine subangular blocky structure; hard, firm, sticky and plastic; common fine and medium roots throughout; common fine and medium interstitial pores; 4 percent fine prominent dark yellowish brown (10YR 4/6) masses of oxidized iron lining pores with clear boundaries; 1 percent fine faint dark gray (10YR 4/1) iron depletions along root channels; strongly acid; gradual smooth boundary. (15 to 32 cm [6 to 13 in] thick)

Bt1--18 to 32 cm (7 to 13 in); very dark grayish brown (10YR 3/2) clay, dark grayish brown (10YR 4/2) dry; moderate medium angular blocky structure; very hard, very firm, very sticky and very plastic; common fine and medium roots throughout; common very fine and fine tubular pores; few distinct pressure faces and wedged-shaped aggregates; few vertical cracks 5 to 10 mm wide partly filled with material from above; 10 percent distinct clay films on surfaces of peds; 12 percent fine and medium prominent yellowish brown (10YR 5/6) masses of oxidized iron lining pores with sharp boundaries, 4 percent fine faint gray (10YR 5/1) iron depletions in the matrix with clear boundaries; strongly acid; gradual wavy boundary. (combined thickness of the Bt1 and Bt2 horizons is 53 to 136 cm [21 to 54 in])

Bt2--32 to 85 cm (13 to 33 in); dark grayish brown (10YR 4/2) clay, light brownish gray (10YR 6/2) dry; moderate medium wedge structure; hard, firm, very sticky and very plastic; common very fine and fine roots throughout; common very fine and fine tubular pores; 5 percent faint clay films, and 10 percent pressure faces on surfaces of peds; 13 percent fine and medium prominent light olive brown (2.5Y 5/4), 5 percent fine prominent light olive brown (2.5Y 5/6) masses of oxidized iron in matrix with sharp boundaries, and 2 percent fine distinct gray (2.5Y 5/1) iron depletions in matrix with clear boundaries; strongly acid; gradual wavy boundary.

Bt3--85 to 151 cm (33 to 59 in); grayish brown (10YR 5/2) clay, light brownish gray (10YR 6/2) dry; moderate medium subangular blocky structure; very hard, very firm, very sticky and very plastic; few very fine and fine roots throughout; few very fine and fine tubular pores; 5 percent faint clay films, and 10 percent pressure faces on surfaces of peds; 10 percent fine prominent light olive brown (2.5Y 5/4), and 10 percent medium prominent light olive brown (2.5Y 5/6) masses of oxidized iron in matrix with sharp boundaries; strongly acid; gradual wavy boundary.

Bt4--151 to 203 cm (59 to 80 in); gray (10YR 6/1) clay loam, light gray (10YR 7/1) dry; moderate medium subangular structure; hard, firm, sticky and plastic; 10 percent faint clay films on faces of peds; 5 percent fine prominent yellowish brown (10YR 5/6), and 7 percent prominent medium yellowish brown (10YR 5/8) masses of oxidized iron in matrix with sharp boundaries; moderately acid; clear smooth boundary. (combined thickness of the Bt3, Bt4, and Bt5 horizons is 52 to 171 cm [21 to 68 in])

TYPE LOCATION:
Austin County, Texas; from the intersection of Interstate 10 and Texas Highway 71, 17.2 miles south on Texas Highway 71 in Garwood, 7.1 miles west on FM 1693, 0.7-mile west county road to windmill north of county road, and 300 ft northeast in rice field.

USGS topographic quadrangle: Wallis, TX
Latitude: 29 degrees, 46 minutes, 9.82 seconds N;
Longitude: 96 degrees, 6 minutes, 15.79 seconds W;

Decimal Degrees
Latitude: 29.7693944
Longitude: -96.1043861
Datum: WGS84

UTM Easting: 779979.56 m
UTM Northing: 3296747.52 m
UTM Zone: 15

RANGE IN CHARACTERISTICS:
Soil Moisture: An aquic soil moisture regime.

Mean annual soil temperature: 21.7 to 22.8 degrees C (71 to 73 degrees F)

Particle-size control section (weighted average):
Clay content: 35 to 53 percent

Ap or A horizon
Hue: 10YR
Value: 3 to 5
Chroma: 2 to 4 (areas with value of 3 and chroma less than 3 are less than 25 cm [10 in] thick)
Texture: clay loam, sandy clay loam, or fine sandy loam
Clay content: 18 to 39 percent
Redox concentrations: amount-none to many, shades-yellow or brown
Reaction (pH): strongly acid to neutral (5.1 to 7.3)

Bt horizon (upper)
Hue: 10YR
Value: 3 to 6
Chroma: 1 to 3
Texture: clay loam, sandy clay or clay
Clay content: 33 to 55 percent
Redoximorphic concentrations: amount-few to many, shades-red, yellow, brown
Redox depletions: amount-none to common, shades-gray
Reaction (pH): strongly acid to moderately alkaline (5.1 to 8.4)

Bt horizon (lower)
Hue: 10YR or 2.5Y
Value: 4 to 7
Chroma: 1 to 4
Texture: clay loam or clay
Clay content: 33 to 55 percent
Redoximorphic concentrations: amount-few to many, shades-red, yellow, brown
Redox depletions: amount-none to common, shades-gray
Reaction (pH): strongly acid to moderately alkaline 5. to 8.4)

COMPETING SERIES:
These are the Baldwin, Verland, and Viterbo series.
Baldwin soils: allow color hues yellower than 2.5Y in the argillic horizon; have higher silt content throughout; occur in areas of higher rainfall
Verland soils: somewhat poorly drained; allow color hues yellower than 2.5Y in the argillic horizon
Viterbo soils: occur in areas of higher rainfall; have higher silt content throughout

GEOGRAPHIC SETTING:
Parent material: loamy alluvial deposits derived from igneous, metatmorphic and sedimentary rock
Landscape: coastal plains
Landform: open ended depressions
Slope: 0 to 1 percent
Mean annual precipitation: 1016 to 1524 mm (40 to 60 in)
Thornthwaite P-E Index: 52 to 62
Mean annual air temperature: 19.5 to 20.6 degrees C (67 to 69 degrees F)
Frost-free period: 220 to 300 days
Elevation: 5 to 52 m (16 to 170 ft)

GEOGRAPHICALLY ASSOCIATED SOILS:
These are the Verland, Bernard, Lake Charles, and Midfield series.
Verland soils: occur on a slightly higher landform; do not pond
Bernard soils: have a mollic epipedon; on a higher landform
Lake Charles soils: are clayey throughout; on a higher landform
Midfield soils: occur on higher landform positions on meander

DRAINAGE AND PERMEABILITY:
Drainage class: poorly
Permeability class: very slow
Runoff: negligible
Flooding: None
Ponding: Occasional for long periods
Seasonal water table: In normal years, water perches on top of the argillic horizon for long periods of time after heavy rains during winter and spring months.

USE AND VEGETATION:
Major uses: Mainly used for rangeland. Some areas are in improved pasture.
Ecological sites assigned to phases and components of this series are listed below. Current ecological site assignments are in Web Soil Survey. Components of this series include the following ecological sites: Lowland

DISTRIBUTION AND EXTENT:
General area: Coastal Prairie of Texas
Land Resource Region: T (Atlantic and Gulf Coast Lowland Forest and Crop Region)
Major Land Resource Area: 150A (Gulf Coast Prairies)
Extent: The series is of small extent

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Austin County, Texas, 2019.

REMARKS:
These soils were formerly included in a depressional phase of the Midland series. The Midland soils occur in areas of higher rainfall and formed in deposits with higher silt content.

Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon: 0 to 18 cm (0 to 7 in) (A and E horizons)

Vertic feature: Cracks and/or wedge-shaped aggregates within the upper part of the argillic horizon.

Argillic horizon: 18 to 203 cm (7 to 80 in) (Bt1, Bt2, Bt3, and Bt4 horizons)

ADDITIONAL DATA:

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.

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National Cooperative Soil Survey
U.S.A.