LOCATION SCOTT              NE+CO SD

SCOTT SERIES

TAXONOMIC CLASS: Fine, smectitic, mesic Vertic Argialbolls

TYPICAL PEDON: Scott silt loam with a slope of less than 1 percent in pasture. (Colors are for moist soil unless otherwise stated.)

A--0 to 13 centimeters (0 to 5 inches); very dark gray (10YR 3/1) silt loam, gray (10YR 5/1) dry; moderate medium granular structure; slightly hard, friable; slightly acid; abrupt smooth boundary. (5 to 15 centimeters (2 to 6 inches) thick)

E--13 to 20 centimeters (5 to 8 inches); gray (10YR 5/1) silt loam, gray (10YR 6/1) dry; moderate thin and medium platy structure parting to moderate fine subangular blocky; slightly hard, friable; slightly acid; abrupt smooth boundary. (3 to 13 centimeters (1 to 5 inches) thick)

Bt1--20 to 51 centimeters (8 to 20 inches); very dark gray (N 3/0) silty clay, dark gray (N 4/0) dry; common medium prominent yellowish brown (10YR 5/4) iron masses; strong coarse prismatic structure parting to strong medium angular blocky; very hard, very firm, shiny surfaces on faces of most peds; many hard 1 to 2 mm, spherically shaped iron-manganese concretions; neutral; clear smooth boundary.

Bt2--51 to 86 centimeters (20 to 34 inches); very dark gray (N 3/0) clay, dark gray (N 4/0) dry; few fine prominent yellowish brown (10YR 5/4) iron masses; strong coarse prismatic structure parting to strong fine angular blocky; very hard, very firm; shiny surfaces on faces of most peds; many hard 1 to 2 mm, spherically shaped iron-manganese concretions; neutral; clear smooth boundary. (Combined thickness of the Bt horizon is 41 to 102 centimeters (16 to 40 inches) thick)

BC--86 to 117 centimeters (34 to 46 inches); dark grayish brown (2.5Y 4/2) silty clay loam, light brownish gray (2.5Y 6/2) dry; moderate medium subangular blocky structure; hard, firm; neutral; gradual smooth boundary. (13 to 36 centimeters (5 to 14 inches) thick)

C1--117 to 142 centimeters (46 to 56 inches); brown (10YR 4/3) silt loam, pale brown (10YR 6/3) dry; weak coarse prismatic structure; slightly hard, friable; slightly alkaline; gradual smooth boundary. (20 to 51 centimeters (8 to 20 inches) thick)

C2--142 to 152 centimeters (56 to 60 inches); brown (10YR 4/3) silt loam, pale brown (10YR 6/3); moist; weak coarse prismatic structure; slightly hard, friable; carbonates disseminated throughout matrix; violent effervescence; slightly alkaline.

TYPE LOCATION: Franklin County, Nebraska; 5 kilometers (3 miles) west and 3 kilometers (2 miles) south of Hildreth, Nebraska; 488 meters (1,600 feet) east and 15 meters (50 feet) north of southwest corner, sec. 14, T. 4 N., R. 16 W. Hildreth topographic quadrangle, latitude 40 degrees, 18 minutes, 26 seconds North and longitude 99 degrees, 6 minutes, 54 seconds West.

RANGE IN CHARACTERISTICS:
Moisture regime: aquic
Depth to redoximorphic features: 13 to 28 centimeters (5 to 11 inches) which is beneath the E horizon or top of Bt horizon, in some pedons it is at 0 centimeters (0 inches)
Kind of redoximorphic features: iron masses and/or 2 to 25 mm, dark brown, spherically shaped iron-manganese concretions or nodules, iron masses become larger and less bright with depth
Depth to episaturation: 0 to 61 centimeters (0 to 24 inches in the poorly drained soil and 0 to 30 centimeters (0 to 12 inches) in the very poorly drained soil
Depth to secondary carbonates: 89 to 152 centimeters (35 to 60 inches), carbonates are below a depth of 152 centimeters (60 inches) in some pedons
Kind of calcium carbonates when present: soft to hard, common, fine to coarse, prominent, white (10YR 8/1) masses or concretions, masses sometimes occur as threads or coatings on faces of peds
Thickness of the mollic epipedon: 48 to 117 centimeters (19 to 46 inches)
Thickness of the solum (A, E, Bt1, Bt2, BC horizons): 69 to 168 centimeters (27 to 66 inches) or more
Particle size control section:
Clay content: 40 to 55 percent
A horizon:
Hue: 10YR
Value: 3 to 5, 2 or 3 moist
Chroma: 1 or 2
Texture: silt loam, silty clay loam
Reaction: slightly acid to strongly acid

E horizon:
Hue: 10YR
Value: 5 or 6, 4 or 5 moist
Chroma: 1
Texture: silt loam, loam
Reaction: slightly acid to strongly acid

Bt horizon:
Hue: 10YR, 2.5Y, 5Y, N
Value: 3 to 6, 2 to 5 moist
Chroma: 0 to 2
Texture: silty clay loam, silty clay, clay
Clay content: 35 to 55 percent
Reaction: moderately acid to slightly alkaline

BC horizon:
Hue: 10YR or 2.5Y
Value 4 to 6, 3 to 4 moist
Chroma: 2
Texture: silty clay loam, clay loam, silt loam
Reaction: neutral to moderately alkaline

C horizon:
Hue: 10YR or 2.5Y
Value: 5 to 7, 4 to 6 moist
Chroma: 2 to 4
Texture: silt loam, silty clay loam, clay loam, loam
Reaction: neutral to moderately alkaline

COMPETING SERIES: These are the Barbert, Crestmeade, Edina, Filbert, Fillmore, Massie, Sturges and Triplett series.
Barbert soils have soil temperatures at a depth of 51 centimeters (20 inches) that average 7 to 10 degrees C. (45 to 50 degrees F.).
Crestmeade soils have a mean annual precipitation greater than 76 centimeters (30 inches).
Edina soils have a mean annual precipitation greater than 76 centimeters (30 inches).
Filbert soils are in the udic moisture regime and are saturated in the soil moisture control section for brief periods and are ponded for brief durations during the growing season.
Fillmore soils are saturated in the soil moisture control section for long periods and are ponded for brief durations during the growing season.
Massie soils are saturated and are ponded for more than 45 consecutive days during the growing season.
Sturges soils have a mean annual precipitation greater than 76 centimeters (30 inches).
Triplett soils have a mean annual precipitation greater than 76 centimeters (30 inches).

GEOGRAPHIC SETTING:
Landform: depressions on uplands and loess capped stream terraces
Parent material: loess
Slope: 0 to1 percent
Mean annual temperature: 9 to 12 degrees C. (48 to 53 degrees F)
Mean annual precipitation: 51 to 71 centimeters (20 to 28 inches)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Butler, Fillmore, Hastings, and Holdrege series.
Butler soils do not have an albic horizon, are somewhat poorly drained having saturation in the upper part of the solum for less than 7 consecutive days during the growing season, and are on higher swales.
Fillmore soils typically have thicker combined A and E horizons and are slightly higher on depressions.
Hastings soils do not have an albic horizon, are well drained, and are on higher plains and hillslopes of uplands.
Holdrege soils do not have an albic horizon, have 27 to 35 percent clay in the particle size control section, are well drained, and are on higher plains and hillslopes of uplands.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: poorly and very poorly
Runoff: negligible
Saturated hydraulic conductivity: low
Saturation: to the surface from November to March, from April through July the soil will be saturated to the surface to intermittently dry in the surface layer, but will generally contain water near saturation in the perched zone within the lower soil horizons. The upper part of the solum is saturated for more than 30 consecutive days during the growing season. The soil is driest from August through October.
Ponding frequency: occasional on the poorly drained soil; frequent on the very poorly drained soil
Ponding duration: long on the poorly drained soil with a depth of up to 30 centimeters (12 inches); very long on the very poorly drained soil with a depth of up to 61 centimeters (24 inches)

USE AND VEGETATION: Most areas are in pasture or wildlife habitat and used for livestock grazing and waterfowl. The plant community consists mainly of smartweed, curly dock, barnyard grass, plains coropsis, perennial bursage, sedges, and spikerush. Reed canarygrass has been seeded in some areas. The present rangeland ecological site is Clayey Overflow, (R075XY049NE) but Closed Depressions is being proposed. Minor use is cropping.

DISTRIBUTION AND EXTENT: Primarily south central, central, extreme north central, and the northwest part of northeast Nebraska, LRRs H, G, and M, MLRAs 71, 73, 75, 66, and 102C. The series is moderately extensive.
MLRA OFFICE RESPONSIBLE: Salina, Kansas

SERIES ESTABLISHED: Scott County, Kansas, 1910. The Scott series is no longer used in Kansas.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 86 centimeters (0 to 34 inches) (A, E, Bt horizons)
Albic horizon: 13 to 20 centimeters (5 to 8 inches) (E horizon)
Argillic horizon: 20 to 86 centimeters (8 to 34 inches) (Bt1 and Bt2 horizons)
Linear extensibility: exceeds 6.0 between the surface and 100 centimeters (99 inches)
The Scott, drained phase, is somewhat poorly drained and does not pond water but is saturated for long durations.
A terrace phase is recognized that has sand or coarse textured material below the loess cap at a depth of 3 to 9 meters (10 to 30 feet).
01/2008 RRH: The Scott soils mapped in the aridic-ustic and udic moisture regimes may need to be recorrelated to the Lodgepole and Filbert series, respectively, or new series may be needed for very poorly drained soils.
03/2006 LRM: metric conversion and changed permeability to saturated hydraulic conductivity
01/2008 RRH: Typical pedon: put moist colors first; Range of Characteristics, Bt horizon: added silty clay loam; Competing series: revised; Geographic Setting: revised, narrowed the mean annual precipitation and mean annual temperature ranges; Geographically Associated Soils: revised, used only those soils at type location; Drainage: revised; Distribution and Extent: revised; Use and Vegetation: revised, plant community based on A Regional Guidebook for Applying the Hydrogeomorphic Approach to Assessing Wetland Functions of Rainwater Basin Depressional Wetlands in Nebraska, the component existing plants in NASIS is incorrect; Additional Data: revised

ADDITIONAL DATA: Data is available from the National Soil Survey Center, Soil Survey Laboratory for Pedon IDs 77NE035001 and 79NE059007. Pedon ID 1978NE061020 represents the Typical Pedon and is in NASIS.