LOCATION DERBY                   OK

Established Series
JEH Rev. CEW:JLD
04/2018

DERBY SERIES

The Derby series consists of very deep, somewhat excessively drained soils that formed in sandy eolian sediments of Pleistocene age. These are reworked dunes on stream terraces along major streams in the Central Rolling Red Prairies (MLRA 80A), and Northern Cross Timbers (MLRA 84A). Slope ranges from 0 to 35 percent. Mean annual air temperature is 16 degrees C (61 degrees F), and mean annual precipitation is 914 mm (36 in).

TAXONOMIC CLASS: Mixed, thermic Lamellic Ustipsamments

TYPICAL PEDON: Derby loamy fine sand-savannah, at an elevation of 256 m (840 ft). (Colors are for dry soil unless otherwise stated.)

Al--0 to 23 cm (0 to 9 in); brown (10YR 5/3) loamy fine sand, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable; neutral; clear smooth boundary. (Thickness of the A1 horizon is 10 to 61 cm [4 to 24 in])

A2--23 to 51 cm (9 to 20 in); light brown (7.5YR 6/4) loamy fine sand, brown (7.5YR 4/4) moist; single grain; loose; moderately acid; clear smooth boundary. (Thickness of the A2 horizon is 0 to 107 cm [0 to 42 in])

E1--51 to 137 cm (20 to 54 in); pink (7.5YR 7/4) fine sand, brown (7.5YR 5/4) moist; single grain; loose; slightly acid; diffuse smooth boundary. (Thickness of the E horizon is 41 to 122 cm [16 to 48 in])

E2 and Bt1--137 to 183 cm (54 to 72 in); reddish yellow (7.5YR 6/6) fine sand, strong brown (7.5YR 5/6) moist (E2); single grain; loose; with lamellae of yellowish red (5YR 5/6) fine sand, yellowish red (5YR 4/6) moist (Bt1); the lamellae are massive; soft, very friable; 2 to 15 cm (1 to 6 in) apart and 2 to 10 mm (0.25 to 0.4 in) thick, and discontinuous horizontally; neutral; lamellae are slightly acid; diffuse smooth boundary. (Combined thickness of the E and Bt horizon is 46 to 91 cm [18 to 36 in])

E3 and Bt2--183 to 304 cm (72 to 120 in); pink (7.5YR 7/4) fine sand, light brown (7.5YR 6/4) moist (E3); single grain; loose; with lamellae of yellowish red (5YR 5/6) loamy fine sand, yellowish red (5YR 4/6) moist (Bt2); the lamellae are massive; soft, very friable; 5 to 15 cm (2 to 6 in) apart and 2 to 12 mm (0.25 to 0.5 in) thick, and continuous horizontally; neutral.

TYPE LOCATION: Payne County, Oklahoma; about 3 miles west and 3 miles south of Yale; 2,200 feet south and 200 feet west of the northeast corner of sec. 3, T. 18 N., R. 5 E.

USGS topographic quadrangle: Twin Mounds, OK
Latitude 36 degrees, 3 minutes, 60 seconds N
Longitude 96 degrees, 44 minutes, 59 seconds
W Datum: NAD 83

Decimal Degrees:
Latitude: 36.06707
Longitude: -97.74998

UTM Easting: 702633.10
UTM Northing: 3993730.43
UTM Zone: 14N

RANGE IN CHARACTERISTICS:
Depth to lamellae: 112 to 152 cm (44 to 60 in)
Other features: Ap or A1 horizons that are fine sandy loam cannot be deeper than 25 cm (10 in) or the depth of the Ap horizon, whichever is deeper.

Ap or A horizons:
Hue: 5YR to 10YR
Value: 4 to 7 dry, 3 or 5 moist
Chroma: 2 to 6 dry or moist
Texture: loamy fine sand or fine sandy loam
Effervescence: none
Reaction: moderately acid to slightly alkaline

E and Bt horizons:
E Part
Hue: 5YR to 10YR
Value: 6 to 8 dry, 5 or 6 moist
Chroma: 4 to 8 dry or moist
Texture: fine sand or loamy fine sand
Effervescence: none
Reaction: moderately acid to moderately alkaline

Bt Part
Hue: 2.5YR or 5YR
Value: 6 to 7 dry, 4 to 6 moist
Chroma: 4 to 8 dry or moist
Texture: loamy fine sand, fine sand and fine sandy loam
Lamellae: range from thin bands in the Bt1 part to the thickest in the Bt2 part, and become thin again with depth
Lamellae thickness ranges: from 1 to 25 mm (0.1 to 2 in), but those more than 1 cm thick do not reach a cumulative total of 15 cm within a depth of 152 cm (60 in) in any pedon, lamellae are usually 2 to 20 cm (0.7 to 8 in) apart
Effervescence: none
Reaction: moderately acid to moderately alkaline

C horizon (where present):
Hue: 7.5YR
Value: 6 or 7 dry, 5 or 6 moist
Chroma: 6 or 8 dry or moist
Bedding planes: eolian origin are evident and cross bedding is common
Other features: in some pedons, the C horizon is not present and the lamellae zone rests on older buried terrace sediments; these older buried terrace sediments are redder, loamy, and consist of thicker lamellae or continuous subsoil material

COMPETING SERIES: The Eda soils are the only series in the same family. Soils in similar families are the Aline, Aquilla, Dillwyn, Eufaula, Goltry, and Goodnight series.
Aline, Aquilla, Eufaula and Goltry soils: have lamellae that total more than 15 cm (6 in) thick; in addition, Aquilla and Eufaula soils have siliceous mineralogy
Eda soils: are dry for longer periods
Dillwyn soils: have an apparent water table at depths of 0.3 to 1 m (1 to 3 ft)
Goodnight soils: do not have lamellae

GEOGRAPHIC SETTING:
Parent material: sandy eolian sediments of Pleistocene age
Landscape: dune fields
Landform: nearly level to steep uplands, on the first terrace above the flood plain on the north side of major rivers
Slope: 0 to 35 percent
Mean Annual Air Temperature: 15 to 17.2 degrees C (59 to 63 degrees F)
Mean Annual Precipitation: 838 to 991 mm (33 to 39 in)
Frost-free period: 181 to 240 days
Elevation: 244 to 427 meters (800 to 1400 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Goodnight series and Amber, Gaddy, Minco, Paluxy (MLRA 85 and 84C), and Yahola series.
Amber soils: have a coarse-silty control section and occur on flood plains
Gaddy soils: are stratified, have an irregular decrease in organic matter, and occur on flood plains
Goodnight soils: do not have lamellae, and occur on similar landscapes
Minco soils: have a mollic epipedon, a coarse-silty control section, and occur farther from the sediment source
Paluxy soils: have a coarse-loamy control section and occur on similar landscapes
Yahola soils: have a coarse-loamy control section, an irregular decrease in organic matter, and occur on flood plains

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: somewhat excessively drained
Runoff: negligible on 0 to 5 percent slopes, very low on 5 to 20 percent slopes, and low on slopes greater than 20 percent
Saturated hydraulic conductivity: high

USE AND VEGETATION: Mainly used for livestock grazing. The more gentle slopes are cultivated to small grains or improved pasture. Native vegetation is savannah with an understory of tall grasses. Principle trees are post oak, blackjack oak, American elm, black walnut, chittamwood, and eastern red cedar. Principle grasses are little bluestem, purple top, paspalum, switchgrass, and sand dropseed.

DISTRIBUTION AND EXTENT:
General area: Central Oklahoma
Land Resource Region H-Central Great Plains Winter Wheat and Range Region, and J-Southwestern Prairies Cotton and Forage Region
MLRA 80A-Central Rolling Red Prairies, MLRA 84A-North Cross Timbers
Extent: moderate

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

SERIES ESTABLISHED: Payne County, Oklahoma 1983, by J.E. Henley

REMARKS:
These soils were formerly on the inactive list. They are included in the Derby and Eufaula series in some older published surveys.

Updated competing series, taxonomic version, saturated hydraulic conductivity, and formatting. (JLD 01/2016) Added MLRA 80A to OSD 07/2017.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 51 cm (0 to 20 in) (A1 and A2 horizons)
Albic horizon: 51 to 137 cm (20 to 54 in) (E1 horizon)
Lamellae: 137 to 253 cm (54 to 120 in) (E2 and Bt1, E3 and Bt2 horizons)

Edited 03/2018 (JAD-JLD) Updated pedon description, and other sections.

ADDITIONAL DATA: Published report by Gray, Meksopon, and Peschel, 1974, Study of Some Physical and Chemical Properties of an Oklahoma Soil Profile with Clay-Iron Blends. Dept. of Agronomy, Oklahoma State University, Stillwater, Oklahoma. Also published in Soil Science, Vol. 122, No. 3.

Oklahoma State University Laboratory; 79-OK-60-4

TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014

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National Cooperative Soil Survey
U.S.A.