LOCATION KEZAN NEEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, nonacid, mesic Mollic Fluvaquents
TYPICAL PEDON: Kezan silt loam with a 1 percent, north-facing slope in an alfalfa field. When described, the soil was moist throughout. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 6 inches; grayish brown (10YR 5/2) silt loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; slightly hard, friable; neutral; abrupt smooth boundary. (4 to 9 inches thick)
C--6 to 13 inches; stratified grayish brown (10YR 5/2) and light brownish gray (10YR 6/2) silt loam, very dark grayish brown (10YR 3/2) and dark grayish brown (10YR 4/2) moist; massive with evident bedding planes; slightly hard, friable; few fine prominent reddish brown (5YR 4/4) iron masses in the soil matrix; neutral; abrupt smooth boundary. (6 to 12 inches thick)
Cg1--13 to 19 inches; stratified dark gray (10YR 4/1) and grayish brown (10YR 5/2) silt loam, very dark gray (10YR 3/1) and dark grayish brown (10YR 4/2) moist; massive with evident bedding planes; slightly hard, friable; few fine prominent reddish brown (5YR 4/4) iron masses in the soil matrix; few fine prominent reddish brown (5YR 4/4) iron masses in the soil matrix; neutral; abrupt smooth boundary. (4 to 10 inches thick)
Cg2--19 to 32 inches; stratified grayish brown (10YR 5/2) and light brownish gray (10YR 6/2) silt loam, very dark grayish brown (10YR 3/2) and dark grayish brown (10YR 4/2) moist; massive with evident bedding planes; slightly hard, friable; few fine prominent reddish brown (5YR 4/4) iron masses in the soil matrix; neutral; abrupt smooth boundary. (10 to 20 inches thick)
Agb1--32 to 44 inches; dark gray (10YR 4/1) silt loam, very dark gray (10YR 3/1) moist; massive; hard, friable; neutral; gradual wavy boundary. (0 to 15 inches thick)
Agb2--44 to 60 inches; dark gray (N4/0) silt loam, black (N2/0) moist; massive; hard, friable; neutral.
TYPE LOCATION: Butler County, Nebraska; 3 miles west of Brainard; 1360 feet south and 200 feet east of the northwest corner, sec. 14, T. 14 N., R. 3 E.
RANGE IN CHARACTERISTICS: Typically, free calcium carbonate is not present in the profile, but in some pedons they occur at depths of 12 to 30 inches.
Soil moisture: The soil moisture control section is wet from 6 to 18 inches to more than 72 inches from November to June; Aquic moisture regime.
Depth to redox concentrations: 4 to 9 inches
Depth to endosaturation: 6 to 18 inches from November to June
Particle-size control section (weighted average):
Clay content: 24 to 35 percent
Sand content: 2 to 12 percent
A horizon:
Hue: 10YR
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 1 or 2
Texture: silt loam or silty clay loam
Clay content: 20 to 27 percent
Reaction: neutral or slightly alkaline
Reaction in calcareous overwash phase: Slightly alkaline or moderately alkaline
C and Cg horizons:
Hue: 10YR or 2.5Y
Value: 4 to 6 dry, 2 to 5 moist
Chroma: 1 or 2 dry or moist
Redoximorphic Concentrations: hue: 7.5YR or 5YR; value: 4; chroma: 4
Texture: silt loam or silty clay loam
Clay content: 24 to 35 percent
Reaction: Neutral to moderately alkaline
Agb horizons, when present:
Hue: 10YR or 2.5 Y or N
Value: 3 or 4 dry, 2 or 3 moist
Chroma: 0 to 1
Redoximorphic Concentrations: hue: 7.5YR or 5YR; value: 4; chroma: 4
Texture: Silt loam or silty clay loam
Clay content: 24 to 35 percent
Reaction: Neutral to moderately alkaline
COMPETING SERIES: This is the Quiver series. Quiver soils formed in areas of higher mean annual rainfall.
GEOGRAPHIC SETTING:
Parent material: Silty alluvial sediments derived from loess.
Landform: Flood plains
Slopes: 0 to 2 percent
Mean annual temperature: 49 to 53 degrees F
Mean annual precipitation: 24 to 28 inches
Frost-free period: 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Alcester,
Aowa,
Colo,
Hobbs,
Hord, and
Judson soils.
Alcester and Judson soils formed in colluvial-alluvial material on foot
slopes and have a seasonal high water table below a depth of 5 feet.
Judson soils are cumulic.
Aowa soils occupy similar landscape but are calcareous.
Colo soils are on similar landscape and are cumulic.
Hobbs soils are on similar landscapes and have a seasonal high water table below a depth of 5 feet.
Hord soils formed in loess and alluvium on stream terraces, are cumulic and have a seasonal high water table below a depth of 5 feet.
DRAINAGE AND PERMEABILITY: Poorly drained. Runoff is low. Permeability is moderate. Occasionally or frequently flooded for brief periods from March to July, and the seasonal high water table ranges from 0.5 to 1.5 feet.
USE AND VEGETATION: Most areas are used for pasture, range, or hayland. Cultivated areas that have been drained are in corn or sorghum. Common grasses are big and little bluestem, switchgrass, prairie cordgrass, varieties of sedges, and Kentucky bluegrass. Willow and cottonwoods are common in many places.
DISTRIBUTION AND EXTENT: The Kezan series is in the eastern part of
Nebraska and is moderately extensive.
MLRA OFFICE RESPONSIBLE: Salina, Kansas
SERIES ESTABLISHED: Butler County, Nebraska; July, 1979.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
mollic colors--the zone from 0 to 6 inches (A horizon)
Particle-size control section: The zone from 10 to 40 inches.
Redoximorphic concentrations: In the zone from 6 to 32 inches. (C, Cg1, Cg2 horizons)
Endosaturation: The zone of saturation at 6 to 60 inches. (C, Cg, Agb horizons)
Added Soil Interpretation Record clay content and sand content to "Range In Characteristics".