LOCATION KENRIDGE NE+MOEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Cumulic Hapludolls
TYPICAL PEDON: Kenridge silty clay loam with slope of less than one percent--cultivated. (Colors are for moist soil unless otherwise stated.
Ap--0 to 20 centimeters (0 to 8 inches); very dark gray (10YR 3/1) silty clay loam, dark gray (10YR 4/1) dry; weak fine granular structure; slightly hard, friable; many fine and medium roots; few fine and medium tubular pores; moderately acid; abrupt smooth boundary.
A--20 to 51 centimeters (8 to 20 inches); very dark gray (10YR 3/1) silty clay loam, dark gray (10YR 4/1) dry; weak fine subangular blocky structure; slightly hard, friable; few fine and medium roots; common fine tubular pores; moderately acid; clear smooth boundary. (Combined thickness of A horizons is 33 to 81 centimeters (13 to 32 inches)
Bw1--51 to 91 centimeters (20 to 36 inches); very dark gray (10YR 3/1) silty clay loam, dark gray (10YR 4/1) dry; moderate medium prismatic structure parting to moderate medium subangular blocky; slightly hard, friable; few fine roots; few medium tubular pores; continuous pressure faces; faint black (10YR 2/1) coats on faces of peds; neutral; gradual smooth boundary.
Bw2--91 to 117 centimeters (36 to 46 inches); very dark gray (10YR 3/1) silty clay loam, gray (10YR 5/1) dry; few fine prominent dark yellowish brown (10YR 4/6) iron masses; strong coarse prismatic structure parting to moderate medium subangular blocky; slightly hard, friable; few fine roots; few medium tubular pores; continuous pressure faces and dark organic coatings; many rounded soft masses of iron-manganese; neutral; gradual smooth boundary.
Bw3--117 to 152 centimeters (46 to 60 inches); very dark grayish brown (10YR 3/2) silty clay loam; gray (10YR 5/1) dry; few medium prominent dark yellowish brown (10YR 4/6) iron masses in the matrix; moderate medium prismatic structure parting to moderate medium angular blocky; slightly hard, friable; few fine roots; continuous pressure faces and coats; many soft masses of iron-manganese; neutral; gradual wavy boundary. (Combined thickness of the Bw horizon is 28 to 152 centimeters (11 to 60 inches)
BC--152 to 203 centimeters (60 to 80 inches); dark grayish brown (10YR 4/2) clay loam; gray (10YR 6/1) dry; few fine prominent dark yellowish brown (10YR 4/6) iron masses in the matrix; moderate medium prismatic structure parting to weak medium subangular blocky; slightly hard, friable; few fine roots; continuous pressure faces; neutral. (Thickness of the BC horizon is 0 to 61 centimeters (0 to 24 inches)
TYPE LOCATION: Saunders County, Nebraska; about 1 mile east of Wahoo; 518 meters (1700 feet) south and 280 meters (920 feet) west of the northeast corner of section 3, T. 14 N., R. 7 E. USGS Wahoo East Topographic Quadrangle; Latitude 41 degrees, 12 minutes, 51 seconds North and Longitude 96 degrees, 36 minutes, 20 seconds West.
RANGE IN CHARACTERISTICS:
Soil moisture: Udic
Depth to secondary calcium carbonate: may occur as shallow as 102 centimeters (40 inches)
Depth to redox concentrations: 86 to 152 centimeters (34 to 60 inches)
Thickness of the mollic epipedon: 91 centimeters (36 inches) to more than 152 centimeters (60 inches).
Particle-size control section (weighted average):
Clay content: 30 and 35 percent, but ranges from 27 to 35.
Sand content: Less than 30 percent
Ap horizon:
Hue: 10YR
Value: 3 moist, 3 or 4 dry
Chroma: 0 through 2
Texture: silty clay loam
Clay content: 27 to 35 percent
Reaction: moderately acid or slightly acid
AB horizon, when present:
Hue: 10YR
Value: 3 moist, 4 dry
Chroma: 1 or 2
Texture: silty clay loam
Clay content: 27 to 35 percent
Reaction: moderately acid or slightly acid
Bw horizon:
Hue: 10YR
Value: 3 or 4 moist, 4 or 5 dry
Chroma: 1 or 2
Texture: silty clay loam
Clay content: 27 to 35 percent
Reaction: slightly acid or neutral
BC horizon:
Hue: 10YR
Value: 3 or 4 moist, 5 or 6 dry
Chroma: 1 or 2
Texture: silty clay loam
Clay content: 27 to 35 percent
Reaction: slightly alkaline or moderately alkaline
Some pedons contain C horizons.
COMPETING SERIES: These are the
Allison,
Anthon,
Huntsville,
Ivan,
Judson,
Kahola,
Kennebec,
Lindstrom,
Napier,
Rossville,
Sturkie, and
Worthen soils.
Allison soils have thin strata that contain more than 40 percent sand in the lower part of the control section.
Anthon,
Littleton, and Worthen soils have mollic epipedons that are less than 36 inches thick.
Huntsville, Kennebec, Lindstrom, and Napier soils average less than 27 percent clay in the control section. (Kennebec does not allow any texture other than silt loam.)
Ivan and Kahola soils have free calcium carbonate at depths less than 40 inches.
Judson and Sturkie soils have chromas of 3 or 4 immediately below the mollic epipedon.
Rossville soils have calcium carbonates below 60 inches and are in an area with a mean annual temperature of 11 to 13 degrees C (52 to 55 degrees F).
GEOGRAPHIC SETTING:
Parent material: Loamy alluvium
Landform: Floodplains, alluvial fans and toe slopes
Slopes: 0 to 2 percent
Mean annual temperature: 8 to 15 degrees C (47 to 59 degrees F)
Mean annual precipitation: 71 to 86 centimeters (28 to 34 inches)
Frost-free period: 150 to 170 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Nodaway and
Judson soils.
Nodaway soils do not have a mollic epipedon and are lower on the landscape.
Judson soils are on foot slopes and are higher on the landscape.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: Moderately well drained.
Surface runoff: Low.
Saturated hydraulic conductivity: High
Flooding: Occasionally flooded.
Depth to water table: 1 to 2 meters (3 to 6 feet).
USE AND VEGETATION: Most areas are cultivated.
The main crops are corn and soybeans with small grains and sorghum at a smaller extent.
A few areas of permanent pasture contain some trees.
Native vegetation is tall prairie grasses.
DISTRIBUTION AND EXTENT: Mainly in areas of deep loess in eastern Nebraska. Kenridge soils are of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Holt County, Missouri, 1994.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 152 centimeters (0 to 60 inches) (Ap, A1, and Bw horizons).
These soils have previously been mapped as inclusions in the Colo and Kennebec series in Nebraska. Kenridge soils are moderately well drained and are outside the series range for Colo and Kennebec soils.
11/2005 JCR and LM
Changed format to semi-tab, added metric conversion and updated competing series section.