LOCATION MINCO                   OK+KS TX

Established Series
Rev. CS:GFS:JLD
01/2016

MINCO SERIES

The Minco series consists of very deep, well drained, soils that formed in material weathered from loamy eolian deposits of Pleistocene age. These soils are on treads and risers of stream terraces in the Central Rolling Red Prairies (MLRA 80A). Slopes range from 0 to 30 percent. Mean annual precipitation is 864 millimeters (34 in). Mean annual air temperature is 16.6 degrees C (62 degrees F).

TAXONOMIC CLASS: Coarse-silty, mixed, superactive, thermic Udic Haplustolls

TYPICAL PEDON: Minco silt loam--cultivated. (Colors are for dry soil unless otherwise stated.)

Ap--0 to 18 cm (0 to 7 in); brown (7.5YR 4/2) silt loam, dark brown (7.5YR 3/2) moist; weak medium granular structure; slightly hard, very friable; many fine roots; moderately acid; abrupt smooth boundary.

A--18 to 38 cm (7 to 15 in); brown (7.5YR 4/3) silt loam, dark brown (7.5YR 3/3) moist; moderate medium granular structure; slightly hard, very friable; many fine roots; slightly acid; gradual smooth boundary. (Combined thickness of the A horizon is 0 to 40 cm [0 to 16 in])

Bw1--38 to 61 cm (15 to 24 in); reddish brown (5YR 5/4) silt loam; reddish brown (5YR 4/4) moist; moderate medium prismatic structure; slightly hard, friable; common fine roots; slightly alkaline; gradual smooth boundary.

Bw2--61 to 97 cm (24 to 38 in); light reddish brown (5YR 6/4) silt loam, reddish brown (5YR 5/4) moist; moderate medium prismatic structure; slightly hard, friable; common fine roots; slightly alkaline; gradual smooth boundary.

Bw3--97 to 140 cm (38 to 55 in); red (2.5YR 5/6) silt loam, red (2.5YR 4/6) moist; weak coarse prismatic structure; slightly hard, friable; few fine roots; moderately alkaline; gradual smooth boundary. (Combined thickness of the Bw horizon is 20 to 100 cm [8 to 51 in])

Ck--140 to 183 cm (55 to 72 in); red (2.5YR 5/8) silt loam, red (2.5YR 4/8) moist; massive; slightly hard, friable; few fine roots; few films of secondary carbonates; calcareous; moderately alkaline.

TYPE LOCATION: Grady County, Oklahoma; about 1 3/4 miles north of Tuttle; 1,035 feet south and 300 feet east of the northwest corner of sec. 26, T. 10 N., R. 6

USGS Topographic Quadrangle: W. Tuttle, OK
Latitude: 35 degrees 19 minutes 1 seconds N
Longitude 97 degrees 48 minutes 41 seconds W
Datum: NAD 83

RANGE IN CHARACTERISTICS:
Depth to bedrock: more than 183 cm (72 in)
Soil moisture regime: Udic-Ustic
Sand content: less than 15 percent fine and coarser sand between the depths of 25 and 102 cm (10 to 40 in)
Clay content: 10 to 16 percent between the depths of 25 and 102 cm (10 to 40 in)

A and Ap horizons:
Hue: 5YR to 10YR
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 2 or 3 dry or moist
Texture: very fine sandy loam, silt loam, or loam
Reaction: ranges from moderately acid to neutral

Bw horizon:
Hue: 2.5YR to 7.5YR
Value: 5 or 6 dry, 4 to 6 moist
Chroma: 4 to 6 dry or moist
Texture: very fine sandy loam, silt loam, or loam
Effervescence: None
Reaction: neutral to moderately alkaline

BC or BCk horizon (where present):
Hue: 2.5YR or 5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 to 8 dry or moist
Texture: very fine sandy loam, silt loam, or loam
Other features: Some pedons are fine sandy loam at depths below 102 cm (40 in)
Effervescence: None
Reaction: neutral to moderately alkaline

C or Ck horizon:
Hue: 2.5YR or 5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 to 8 dry or moist
Texture: very fine sandy loam, silt loam, or loam
Other features: Some pedons are fine sandy loam at depths below 102 cm (40 in)
Effervescence: None
Reaction: neutral to moderately alkaline

COMPETING SERIES: This is the Nash series in the same family.
Nash soils: are 50 to 100 cm (20 to 40 in) to sandstone bedrock and are on convex ridges and side slopes

GEOGRAPHIC SETTING:
Parent Material: material weathered from loamy eolian deposits of Pleistocene age
Landscape: alluvial plain or dune fields
Landform: treads and risers of stream terraces
Slopes: 0 to 30 percent
Mean Annual Precipitation: 635 to 991 mm (25 to 39 in)
Mean Annual Air Temperature: 13.9 to 18.3 degrees C (57 to 63 degrees F)
Frost-Free Period: 181 to 240 days
Elevation: 200 to 701 m (853 to 1650 ft)
Thornthwaite Annual P-E indices: 44 to 64

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dougherty, Grant, Konawa, Norge, Pond Creek, Reinach, and Teller series.
Dougherty and Konawa soils: have an argillic horizon and are on similar or slightly higher positions
Grant, Norge, Pond Creek, and Teller soils: have an argillic horizon with a clay content of more than 18 percent and are on higher positions
Reinach soils: have a mollic epipedon more than 51 cm (20 in) thick and are on flood plains

DRAINAGE AND PERMEABILITY:
Drainage: well drained
Permeability: moderately high
Runoff: negligible on 0 to 1 percent slopes, low on 1 to 5 percent slopes, medium on 5 to 20 percent slopes and high on slopes greater than 20 percent

USE AND VEGETATION: Most areas on slopes of less than 8 percent are used for crops and hayland. Some areas are used for grazing. Nearly all areas on slopes of more than 8 percent are used for grazing. Native vegetation is mid and tall grasses.

DISTRIBUTION AND EXTENT: LRR H, Central Rolling Red Prairies (MLRA 80A) of Oklahoma, Kansas, and Texas. The series is of large extent.

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

SERIES ESTABLISHED: Grady County, Oklahoma; 1942

REMARKS:

Extensive revisions made as a result of the SDJR Initiative (JLD 10/2016).

Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 38 cm (0 to 15 in) (Ap and A horizons)
Cambic horizon: 38 to 140 cm (15 to 55 in) (Bw horizons)

ADDITIONAL DATA: Oklahoma State University lab number 68-OK-20-50 and KSSL lab number 580-OK-15-1 in Lincoln, Nebraska.

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

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National Cooperative Soil Survey
U.S.A.