LOCATION BLYBURG NE+SDEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, mesic Fluventic Hapludolls
TYPICAL PEDON: Blyburg silt loam - cultivated (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; very dark brown (10YR 2/2) silt loam, dark grayish brown (10YR 4/2) dry; weak medium and fine granular structure; slightly hard, very friable, neutral; abrupt smooth boundary.
A1--7 to 11 inches; very dark brown (10YR 2/2) silt loam, dark grayish brown (10YR 4/2) dry; weak medium subangular blocky structure parting to weak medium and fine granular; slightly hard, very friable; neutral; gradual smooth boundary.
A2--11 to 15 inches; very dark grayish brown (10YR 3/2) silt loam, dark grayish brown (10YR 4/2) dry; weak medium subangular blocky structure parting to weak medium and fine granular; slightly hard, very friable; few fine pores; disseminated lime through out; strongly effervescent; moderately alkaline; clear smooth boundary. (Combined thickness of the A horizons is 10 to 20 inches)
C1--15 to 21 inches; dark grayish brown (10YR 4/2) stratified silt loam, grayish brown (2.5Y 5/2) dry; weak medium subangular blocky structure parting to fine subangular blocky; slightly hard, very friable; many fine pores; disseminated lime throughout; strongly effervescent; moderately alkaline; clear wavy boundary.
C2--21 to 60 inches; dark grayish brown (10YR 4/2) stratified silt loam, grayish brown (2.5Y 5/2) dry; massive; soft, very friable; many fine pores; 6 percent calcium carbonate disseminated lime throughout; violently effervescent; moderately alkaline.
TYPE LOCATION: Dakota County, Nebraska; 3 miles west and 1 1/2 miles north of Dakota City; 400 feet west and 180 feet north of the southeast corner, sec. 2, T. 28 N., R. 8 E. USGS quad.
RANGE IN CHARACTERISTICS:
Soil moisture: Udic moisture regime
Depth to secondary calcium carbonate: 5 to 20 inches
Thickness of the mollic epipedon: 10 to 20
Thickness of the solum: 10 to 20 inches
Particle-size control section silt loam or very fine sandy loam (weighted average):
Clay content: 8 to 15 percent
Sand content: less than 15 percent
A horizon:
Hue: 10YR
Value: 2 or 3
Chroma: 1 to 3
Texture: silt loam, silty clay loam, or very fine sandy loam
Reaction: neutral to moderately alkaline
C horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5
Chroma: 2 or 3
Texture: silt loam or very fine sandy loam
Reaction: mildly or moderately alkaline
COMPETING SERIES: These are the:
Eudora soils in the same family which lack free carbonates within depths of 20 inches.
Other similar soils are:
Armiesburg soils contain more clay in the control section.
Carr soils lack mollic epipedons, are more stratified, and contain more sand.
Caryville soils contain 15 percent or more fine sand and coarser in the control section.
Cleora soils are thermic.
Huntington soils contain more clay in the control section.
Kennebec soils are leached and have thicker mollic epipedons and contain more clay.
Radford soils contain more clay in the control section.
Haynie soils lack mollic epipedons and are more stratified.
Landes soils contain 15 percent or more fine sand and coarser in the control section.
Radley soils are thermic.
Ware soils contain 15 percent or more fine sand and coarser in the control section.
GEOGRAPHIC SETTING:
Parent material: weakly stratified, loamy alluvium
Landform: Flood plains on river valleys
Slopes: 0 to 6 percent
Elevation: 700 to 1300 feet
Mean annual temperature: 47 to 52 degrees F
Mean annual precipitation: 22 to 28 inches
Frost-free period: 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the:
Blencoe series which are finer textured and are on slightly lower positions.
Forney series which are finer textured and are on slightly lower positions.
Lakeport series which are finer textured and are on slightly lower positions.
Luton series which are finer textured and are on slightly lower positions.
DRAINAGE AND PERMEABILITY:
Drainage: Well drained
Permeability: Moderate
Flooding: for brief periods during the months of April through August.
USE AND VEGETATION: Most areas are cultivated. Corn, soybeans and alfalfa hay are the
principal crops. Native vegetation was grass.
DISTRIBUTION AND EXTENT: Eastern Nebraska, southeastern South Dakota, western Iowa. LRR M, MLRA 102B and 107; the Blyburg series is inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Dakota county, Nebraska, 1972.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (A1, A2, C1, C2 horizons)
Mollic epipedon: The zone from 0 to 15 inches. (Ap, A1, A2 horizons)
Other features: Irregular decrease in organic carbon content at depths between 10 and 50
inches
The percent of calcium carbonate shown in the block description was determined by simple volume calcimeter.
The assignment of the cation-exchange activity class is inferred from lab data from
similar soils in the surrounding area.
Taxonomic Version: Eighth edition, 1998
ADDITIONAL DATA:
Series T Value: 5
Surface K value: .32
Surface Wind Erodibility Group: 5
Surface Wind Erodibility Index: 56