LOCATION DUTEK                   TX

Established Series
Rev. CLN-JAW-RM
09/2015

DUTEK SERIES

The Dutek series consists of very deep, well drained, moderately permeable soils formed in loamy and sandy alluvial material. These soils are on gently sloping to strongly sloping stream terraces of river valleys. Slopes range from 1 to 12 percent. Mean annual precipitation is about 1012 mm (40 in) and the mean annual air temperature is about 19.5 degrees C (67 degrees F).

TAXONOMIC CLASS: Loamy, siliceous, active, thermic Arenic Haplustalfs

TYPICAL PEDON: Dutek loamy fine sand--wooded pasture. (Colors are for dry soil unless otherwise stated.)

A--0 to 20 cm (0 to 8 in); brown (10YR 5/3) loamy fine sand, brown (10YR 4/3) moist; weak fine granular structure; loose, very friable; few roots; slightly acid; gradual smooth boundary. (10 to 51 cm [4 to 20 in] thick)

E1--20 to 66 cm (8 to 26 in); light yellowish brown (10YR 6/4) loamy fine sand, yellowish brown (10YR 5/4) moist; single grained; loose, very friable; few roots; slightly acid; gradual smooth boundary. (25 to 76 cm [10 to 30 in] thick)

E2--66 to 86 cm (26 to 34 in); very pale brown (10YR 7/4) loamy fine sand, brownish yellow (10YR 6/6) moist; single grained, loose, very friable; slightly acid; clear smooth boundary. (0 to 51 cm [0 to 20 in] thick)

Bt1--86 to 137 cm (34 to 54 in); yellowish red (5YR 5/6) sandy clay loam, yellowish red (5YR 4/6) moist; weak coarse prismatic structure parting to weak medium subangular blocky; hard, friable; few fine pores; few clay films on surface of peds; moderately acid; gradual smooth boundary. (20 to 102 cm [8 to 40 in] thick)

Bt2--137 to 163 cm (54 to 64 in); yellowish red (5YR 5/8) fine sandy loam, yellowish red (5YR 5/6) moist; weak coarse prismatic structure parting to weak fine subangular blocky; slightly hard, friable; few fine pores; few clay films on surface of peds; very strongly acid; gradual wavy boundary. (0 to 38 cm [0 to 15 in] thick)

2C--163 to 191 cm (64 to 75 in); reddish yellow (7.5YR 6/6) loamy fine sand, strong brown (7.5YR 5/6) moist; slightly hard, very friable; very strongly acid.

TYPE LOCATION: Dallas County, Texas; in southeast part of Irving, Texas; 500 ft south of intersection of Belt Line Road and Shady Grove Road, then 300 ft east of Belt Line Road in wooded pasture. (Latitude: 32 degrees, 48 minutes, 00 seconds North; Longitude: 96 degrees, 59 minutes, 00 seconds West).

RANGE IN CHARACTERISTICS:
Soil moisture: An ustic soil moisture regime. The soil moisture control section is dry in some or all parts for more than 90 bu less than 150 cumulative days in normal years.
Soil depth: very deep, 152 cm to greater than 203 cm (60 to 80 in)
Rock fragments: amount-0 to 6 percent, kind-quartzite, shape-nonflat or subrounded, cementation- indurated; size-gravel.
Thickness of the Ochric horizon is 51 to 102 cm (20 to 40 in).
Depth to Argillic horizon: 51 to 102 cm (20 to 40 in).
Thickness of Arenic feature: 51 to 102 cm (20 to 40 in).
Particle-size control sections (weighted average)
Clay content: 18 to 35 percent.

A horizon;
Hue: 7.5YR or 10YR
Value: 4 to 7
Chroma: 3 to 6
Texture: loamy fine sand
Rock fragments: amount-0 to 6 percent; size-gravel; kind-quartzite
Reaction: moderately acid to neutral

E horizon:
Hue: 7.5YR or 10YR
Value: 5 to 8
Chroma: 3 to 6
Texture: fine sand, loamy sand or loamy fine sand
Rock fragments: amount-0 to 6 percent; size-gravel; kind-quartzite
Reaction: moderately acid to neutral.

Bt horizon:
Hue: 2.5YR to 7.5YR
Value: 4 to 6
Chroma: 6 or 8
Bt1 horizon:
Texture: sandy clay loam, clay loam, or sandy clay. Clay content in the upper 51 cm (20 in) averages 18 to 35 percent.
Rock fragments: amount-0 to 4 percent; size-gravel; kind-quartzite
Reaction: strongly acid or moderately acid.
Bt2 horizon:
Texture: loam, fine sandy loam, or sandy clay loam.
Rock fragments: amount-0 to 4 percent; size-gravel; kind-quartzite
Reaction: slightly acid to very strongly acid.
Some pedons have redoximorphic features in shades of red or yellow.

BCt horizon (when present):
Hue: 2.5YR to 5YR
Value: 4 to 7
Chroma: 6 to 8
Texture: fine sandy loam, sandy loam, or sandy clay loam
Rock fragments: amount-0 to 6 percent; size-gravel; kind-quartzite
Reaction: slightly acid to very strongly acid.

2C horizon:
Hue: 2.5YR, to 10YR.
Value: 5 to 8
Chroma: 6 to 8
Texture: loamy fine sand, fine sandy loam, loamy sand, or sandy loam.
Rock fragments: amount-0 to 6 percent; size-gravel; kind-quartzite
Reaction: slightly acid to very strongly acid

COMPETING SERIES: There are no competing series in the same family. Similar soils are the Dougherty, Galey, Gasil, Heatly, Heaton, Konawa, Konsil, Milby, Nimrod, Patilo, Silawa, Silstid, Stephenville, Stidham and Tremona series.
Dougherty, Galey, Heatly, Konawa, and Stidham soils: have mixed mineralogy. In addition, Galey and Konawa soils have A horizons less than 51 cm (20 in) thick.
Gasil, Konsil, Silawa, and Stephenville soils: have A horizons less than 51 cm (20 in) thick. In addition, Gasil and Konsil soils do not decrease in clay content significantly within 152 cm (60 in) and Stephenville soils are underlain by sandstone at depths of 51 to 102 cm (20 to 40 in).
Heaton, Milby, Silstid and Tremona soils: do not decrease in clay content significantly within 152 cm (60 in). Heaton soils also occur in drier climates.
Nimrod soils: have grayish zones of iron depletion in the upper Bt horizon due to wetness.
Patilo soils: have grossarenic surface layers.

GEOGRAPHIC SETTING:
Parent material: loamy and sandy alluvial materials of high stream terraces
Landform: stream terraces of river valleys
Landscape: risers
Slope: 1 to 12 percent but are mainly 1 to 4 percent
Mean annual precipitation: 813 to 1,211 mm (32 to 48 in)
Mean annual air temperature: 17.8 to 21.1 degrees C (64 to 70 degrees F)
Frost-free period: 234 to 275 days
Elevation: 25.8 to 175 m (85 to 574 ft)
Thornthwaite P-E Index: 52 to 64

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Gasil, Konsil and Silstid soils in the northern areas and Catilla, Kuy, Milby and Straber soils in the southern areas. These soils occur in similar positions.

DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate. Runoff is very low on 1 to 3 percent slopes, low on 3 to 5 percent slopes, medium on 5 to 12 percent slopes.

USE AND VEGETATION: Most areas are in improved pasture. A few areas are used for truck crops. Native vegetation is mainly post oak and blackjack oak with an understory of mid and tall grasses and briers.

DISTRIBUTION AND EXTENT: Mainly in the East Cross Timbers area of north-central Texas and the Texas Claypan Areas. MLRA(s)84C, 87A The series is of moderate extent.

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

SERIES ESTABLISHED: Dallas County, Texas; 1975.

REMARKS: Active cation exchange activity class. Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon: 0 to 86 cm (0 to 34 in) (A, E1, and E2 horizons).
Arenic feature: 0 to 86 cm (0 to 34 in) (A, E1, and E2 horizons).
Argillic horizon: 86 to 163 cm (34 to 64 in) (Bt horizons).
Decrease in clay content within 152 cm (60 in).

ADDITIONAL DATA: Lincoln Laboratory data available on mechanical analysis and mineralogy - Sample No. 74L186, 76P0035-76P0040. Sand mineralogy test of the Bt horizon indicate 97 percent non-weatherable minerals.

Soil Interpretation Record No.: TX0583

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

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National Cooperative Soil Survey
U.S.A.