LOCATION PAHUK NEEstablished Series
TAXONOMIC CLASS: Mixed, mesic Typic Udipsamments
TYPICAL PEDON: Pahuk loamy fine sand, with a southwest facing 7 percent slope, in abandoned cropland. (Colors are for moist soil unless otherwise stated.)
A--0 to 15 centimeters (0 to 6 inches); brown (10YR 4/3) loamy fine sand, brown (10YR 5/3) dry; weak fine granular structure; soft, very friable; common fine roots throughout; common fine and medium tubular pores; moderately acid; abrupt smooth boundary. (10 to 23 centimeters (4 to 9 inches) thick)
AC--15 to 36 centimeters (6 to 14 inches); brown (10YR 5/3) fine sand, very pale brown (10YR 7/3) and light gray (10YR 7/2) dry; single grain; loose; few fine roots throughout; few fine tubular pores; moderately acid; gradual smooth boundary.
C1--36 to 102 centimeters (14 to 40 inches); pale brown (10YR 6/3) fine sand, very pale brown (10YR 7/3) and light gray (10YR 7/2) dry; single grain; loose; few fine roots throughout; few fine tubular pores; neutral; gradual smooth boundary.
C2--102 to 152 centimeters (40 to 60 inches); pale brown (10YR 6/3) fine sand, very pale brown (10YR 7/3) and light gray (10YR 7/2) dry; few fine prominent brownish yellow (10YR 6/6) soft masses of iron accumulation; single grain; loose; neutral.
TYPE LOCATION: Saunders County, Nebraska; about 1.6 kilometers (1 mile) east and 1.6 kilometers (1 mile south of Wahoo; 140 meters (460 feet) west and 69 meters (225 feet) north of the southeast corner of section 11, T. 14 N., R. 7 E.
RANGE IN CHARACTERISTICS:
Soil moisture: Udic moisture regime.
Mean annual soil temperature: 10 to 11 degrees C. (49 to 52 degrees F.)
Reaction: moderately acid to slightly alkaline
Redox concentrations: hues of 7.5YR to 2.5Y are in the C horizons of most pedons
Redox features: relic and not indicative of present drainage conditions
A horizon:
Hue: 10 YR
Value: 3 or 4, 4 or 5 dry
Chroma: 2 to 4
Texture: Fine sandy loam or loamy fine sand
Clay content: 2 to 12 percent
Sand content: 72 to 88
AC horizon:
Hue: 10 YR
Value: 4 or 5, 6 or 7 dry
Chroma: 2 to 4
Texture: Fine sand or loamy fine sand
Clay content: 1 to 12 percent
Sand content: 72 to 95
Some pedons do not have an AC horizon.
C horizon:
Hue: 10 YR
Value: 5 to 7, 6 to 8 dry
Chroma: 2 to 4
Texture: Typically fine sand or sand, but includes loamy sand and loamy fine sand.
Clay content: 0 to 18 percent
Sand content: 72 to 98
COMPETING SERIES: These are the
Acquango,
Aldo,
Bigapple,
Biltmore,
Boplain,
Breeze,
Caesar,
Chute,
Dabney,
Hodge,
Oakville,
Osolo,
Penwood,
Perks,
Pinegrove,
Plainfield,
Poquonock,
Samoa,
Sardak,
Sarpy,
Scotah,
Spessard,
Suncook,
Tyner, and
Windsor soils.
Acquango soils formed in sandy aeolian and marine sediments and are located on backshore and dune areas of barrier islands of the mid-Atlantic Coastal Plain.
Aldo soils have an apparent seasonal high water table, 107 to 183 centimeters (3.5 to 6 feet) below the surface, for 1 month or more per year.
Bigapple and Breeze soils are anthrotransported material greater than 102 centimeters (40 inches).
Biltmore, Hodge, Perks, Sarpy and Suncook soils are on the floodplain and are subject to flooding.
Boplain soils have a paralithic contact within the series control section.
Caesar, Oakville, Penwood, Plainfield, Spessard, Tyner and Windsor soils have a noncambic pedogenic Bw horizon.
Chute, Sardak, and Sarpy soils contain free carbonates.
Dabney soils are substantially wetter in the soil moisture control section during the 120 days following the summer solstice.
Osolo soils have a solum thickness of 152 to 203 centimeters (60 to 80 inches) or more.
Pinegrove soils formed in acid regolith and contain fragments of sandstone from surface mining operations.
Plainfield, Scotah, and Tyner soils have Bw horizons with hues of 10YR and 7.5YR.
Poquonock soils have a solum thickness and depth to the densic contact ranges from 51 to 97 centimeters (20 to 38 inches).
Samoa soils are on recently stablized dunes on dune fields and coastal plains.
GEOGRAPHIC SETTING:
Parent material: Sandy aluvium and outwash material of Pleistocene age.
Landform: Uplands
Slopes: 5 to 17 percent
Mean annual temperature: 11 to 12 degrees C. (51 to 54 degrees F.)
Mean annual precipitation: 71 to 81 centimeters (28 to 32 inches)
Frost-free period: 160 to 180 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Judson,
Olmitz and
Pohocco soils.
Judson and Olmitz soils have mollic epipedons more than 24 inches thick, have more silt and clay in the control section, and are on foot slopes.
Pohocco soils have more silt and clay in the control section, have carbonates at depths of 12 to 40 inches, and are slightly higher on the back slope.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: Excessively drained.
Runoff: Medium.
Saturated Hydraulic Conductivity: high or very high.
USE AND VEGETATION: Most areas of Pahuk soils are in abandoned cropland and/or pasture land.
DISTRIBUTION AND EXTENT: Eastern Nebraska. The series is of limited extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Saunders County, Nebraska, 1995. The series name is from a prominent high point in the county.
REMARKS: Diagnostic horizon and features recognized in this pedon are:
Ochric epipedon: 0 to 15 centimeters (0 to 6 inches) (A horizon)
Sandy particle-size control section: 25 to 102 centimeters (10 to 40 inches)
Temperature: Mesic
Moisture regimes: Udic
Modified format by LRM in 7/2006 to include metric conversion and change permeability to saturated hydraulic conductivity.