LOCATION SAGERTON TX+OK

Established Series
Rev. WER-CLN-DDR
11/2013

SAGERTON SERIES

The Sagerton series consists of very deep, well drained, moderately slowly permeable soils that formed in calcareous loamy alluvium. These nearly level to gently sloping soils occur on treads of terraces on dissected alluvial plains. Slope ranges from 0 to 5 percent. The mean annual precipitation is about 610mm (24 inches) and mean annual air temperature is about 17 degrees C (63 degrees F).

TAXONOMIC CLASS: Fine, mixed, superactive, thermic Typic Argiustolls

TYPICAL PEDON: Sagerton clay loam--cropland.
(Colors are for dry soil unless otherwise stated.)

Ap--0 to 18 cm (0 to 7 in); brown (7.5YR 4/2) clay loam, dark brown (7.5YR 3/3) moist; weak fine granular structure; slightly hard, friable; few fine roots; few siliceous gravel; slightly alkaline; abrupt smooth boundary. Thickness is 13 to 31 cm (5 to 12 in)

Bt1--18 to 38 cm (7 to 15 in); brown (7.5YR 4/2) clay, dark brown (7.5YR 3/2) moist; moderate medium and fine subangular blocky structure; very hard, firm; few fine roots; few fine pores; thin continuous clay films on surfaces of peds; few siliceous gravel; slightly alkaline; gradual smooth boundary. Thickness is 15 to 31 cm (6 to 12 in)

Bt2--38 to 64 cm (15 to 25 in); reddish brown (5YR 4/4) clay, dark reddish brown (5YR 3/4) moist; moderate medium angular blocky structure; thin patchy clay films on surfaces of peds; common wormcasts; moderately alkaline; gradual smooth boundary. Thickness is 15 to 76 cm (6 to 30 in)

Btk1--64 to 91 cm (25 to 36 in); yellowish red (5YR 5/6) clay loam, yellowish red (5YR 4/6) moist; moderate medium angular blocky structure; very hard, very firm; thin patchy clay films on surfaces of peds; few films and threads and common masses and concretions of calcium carbonate; strongly effervescent; moderately alkaline; clear wavy boundary. Thickness is 13 to 51 cm (5 to 20 in)

Btk2--91 to 158 cm (36 to 62 in); pink (5YR 7/4) clay loam, reddish brown (5YR 5/4) moist; weak medium subangular blocky structure; slightly hard, friable; thin patchy clay films on surfaces of peds; contains estimated 30 to 40 percent calcium carbonate masses and concretions; concretions are 6 to 25 mm (1/4 to 1 in) in diameter; violently effervescent; moderately alkaline; clear smooth boundary. Thickness is 31 to 76 cm (12 to 30 in)

Btk3--158 to 203 cm (62 to 80 in); light red (2.5YR 6/6) clay loam, red (2.5YR 5/6) moist; weak medium subangular blocky structure; slightly hard, firm; thin patchy clay films on faces of peds; 3 to 5 percent calcium carbonate; few siliceous gravel; violently effervescent; moderately alkaline.

TYPE LOCATION: Cottle County, Texas; from intersection of Farm Road 1038 and U. S. Highway 83 in south edge of Paducah, proceed 1.8 miles east and 2.6 miles south on Farm Road 1038 to intersection with county road; proceed 1 mile east, 0.55 mile north, and 1.55 miles east on county road; site is 200 feet south of road.
USGS topographic quadrangle: Chalk, TX; Latitude: 33 degree, 58 minutes, 36.81 seconds N; Longitude: 100 degrees, 13 minutes, 40.13 seconds W; Datum: NAD83. UTM Easting 386580.07 m, UTM Northing 3760273.07 m, UTM Zone 14.

RANGE IN CHARACTERISTICS:
Solum thickness: 152 to more than 203 cm (60 to >80 in)
Depth to argillic horizon: 13 to 31 cm (5 to 12 in)
Depth to secondary calcium carbonate: 51 to 76 cm (20 to 30 in)
Depth to calcic horizon: 76 to 152 cm (30 to 60 in)

Particle-size control section (weighted average)
Total clay content: 35 to 45 percent

A Horizon
Hue: 5YR, 7.5YR, 10YR
Value: 4 or 5, 3 moist
Chroma: 2 or 3 dry or moist
Texture: Loam, or clay loam
Reaction(ph): neutral or slightly alkaline (6.6-8.4)

Upper Bt Horizon
Hue: 5YR, 7.5YR
Value: 4 or 5, 3 or 4 moist
Chroma: 2 or 4 dry or moist
Texture: Clay loam or clay
Total clay content: 35 to 45 percent
Reaction(ph): neutral to moderately alkaline (6.6-8.4)

Lower Bt and upper Btk Horizons
Hue: 2.5YR, 5YR, 7.5YR
Value: 4 to 6, 3 to 5 moist
Chroma: 4 to 6 dry or moist
Texture: Silty Clay loam, Clay loam, Sandy clay, or Clay
Total clay content: 35 to 45 percent
Calcium carbonate equivalent: 0 to 10 percent
Reaction(ph): neutral to moderately alkaline (6.6-8.4)

Btk Horizon (Calcic horizon)
Hue: 2.5YR, 5YR, 7.5YR
Value: 4 to 7, 4 or 6 moist
Chroma: 4 to 6 dry or moist
Texture: Silty Clay loam, Clay loam, Sandy clay, or Clay
Total clay content: 29 to 50 percent
CaCO3 clay content: 1 to 4 percent
Calcium carbonate equivalent: 20 to 50 percent
Reaction(ph): slightly alkaline to strongly alkaline (7.4-8.7)

Lower Btk Horizon (below the calcic horizon)
Hue: 2.5YR, 5YR, 7.5 YR
Value: 4 to 6, dry or moist
Chroma: 6 dry or moist
Texture: Loam, Clay loam, Sandy clay loam, or Clay
Total clay content: 20 to 50 percent
CaCO3 clay content: 0 to 2 percent
Calcium carbonate equivalent: 2 to 15 percent
Reaction(ph): slightly alkaline to strongly alkaline (7.4-8.7)
Solum thickness ranges from 60 to over 80 inches. Depth to secondary carbonates ranges from 20 to 30 inches. Distinct calcic horizons are at depths of 30 to 60 inches.

COMPETING SERIES: These are the Frankirk, La Casa, Lawton, Luckenbach, Pyron, Rowden, and Swenson series. Similar soils are the Abilene, Hollister, Tillman, and Wichita series.
Abilene and Hollister soils have a mollic epipedon more than 51 cm (20 in) thick.
Frankirk soils have secondary carbonates below 30 inches.
Lawton and Luckenbach soils do not have calcic horizons.
Pyron soils have a calcic horizon at depths of less than 36 inches and are effervescent at the surface.
Rowden and Swenson soils have a lithic contact between 20 and 40 inches.
Tillman soils do not decrease in clay by 20 percent or more from the maximum within 152 cm (60 in) of the surface.
Wichita soils do not have a mollic epipedon and do not decrease in clay by 20 percent or more from the maximum within 152 cm (60 in) of the surface.

GEOGRAPHIC SETTING:
Parent material: Calcareous loamy alluvium
Landscape: dissected alluvial plains
Landform: treads of terraces
Slope: dominantly less than 2 percent, but ranges from 0 to 5 percent
Mean annual precipitation: 508 to 711 mm (20 to 28 in)
Thornthwaite annual P-E Index: 31 to 44
Mean annual air temperature: 15.6 to 18.9 degrees C (60 to 66 degrees F)
Frost-free period: 210 to 240 days
Elevation: 335.3 to 914.4 (1,100 to 3,000 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Abilene, Miles, Tillman, Weymouth, and Wichita series.
Abilene soils occur on similar or slightly lower positions.
Miles and Weymouth soils have ochric epipedons, less than 35 percent clay in the particle-size control section, and occur on higher positions.
Tillman soils occur on higher positions.
Wichita soils occur on slightly higher positions.

DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderately slow. Runoff is low on slopes less than 1 percent and medium on 1 to 5 percent slopes.

USE AND VEGETATION: These soils are mainly cultivated to cotton, sorghum, and wheat. Short grasses on rangeland are buffalograss, blue grama and hairy grama. Small mesquite trees are on some areas.

DISTRIBUTION AND EXTENT: Central Rolling Red Plains, Western and Eastern Parts (MLRA 78B & 78C); Rolling Limestone Prairie (MLRA 78A); and Texas North Central Prairie (MLRA 80B) of Texas and Southwestern Oklahoma. The series is extensive.

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

SERIES ESTABLISHED: Cottle County, Texas; 1970.

REMARKS: Classification change from Paleustolls to Argiustolls based on laboratory data from type locations in Cottle, Garza, Jones, Young and Throckmorton counties, Texas. Clay content decrease by more than 20 percent from the maximum within 60 inches of the surface.

Edited 11/2013 (RFG-ROG): Converted to tabular format and added metric measurements. Updated competing series, geographic setting, and associated soils sections.

Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - 0 to 38 cm (0 to 15 in). (Ap and Bt1 horizon)
Argillic horizon - 18 to 203 cm (7 to 80 in). (Bt and Btk horizons)
Calcic horizon - 91 to 157 cm (36 to 62 in). (Btk2 horizon)

Additional Data: NSSL data from Young County, Texas (S84TX-503-001) and Haskell County, Texas (S82TX-207-004)

Taxonomic version: Keys to Soil Taxonomy, Eleventh Edition, 2010

National Cooperative Soil Survey
U.S.A.