LOCATION BOHEMIAN                MI

Established Series
Rev. LWB-NWS-TJE
08/2012

BOHEMIAN SERIES

The Bohemian series consists of very deep, well drained soils formed in loamy and sandy glaciofluvial deposits on lake plains and outwash plains. Slope ranges from 0 to 50 percent. Mean annual precipitation is about 762 mm (30 inches), and mean annual temperature is about 6.1 degrees C (43 degrees F).

TAXONOMIC CLASS: Fine-loamy, mixed, active, frigid Alfic Haplorthods

TYPICAL PEDON: Bohemian silt loam, in a forested area. (Colors are for moist soil unless otherwise stated.)

Oe--0 to 5 cm (2 inches); black (10YR 2/1) partially decomposed leaf litter. (0 to 3 inches thick)

A--5 to 13 cm (2 to 5 inches); very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak fine granular structure; friable; many roots; moderately acid; abrupt smooth boundary. [5 to 10 cm (2 to 4 inches) thick]

E--13 to 28 cm (5 to 11 inches); pinkish gray (7.5YR 6/2) silt loam; weak medium platy structure; friable; many roots; moderately acid; abrupt wavy boundary. [5 to 20 cm (2 to 8 inches) thick]

Bs1--28 to 38 cm (11 to 15 inches); brown (7.5YR 4/4) very fine sandy loam; weak medium subangular blocky structure; very friable; many roots; strongly acid; abrupt smooth boundary.

Bs2--38 to 51 cm (15 to 20 inches); brown (7.5YR 5/4) silt loam; weak medium subangular blocky structure; friable; many roots, moderately acid; clear wavy boundary. [(4 to 14 inches) thick]

E'--51 to 58 cm (20 to 23 inches); brown (7.5YR 5/2) fine sandy loam; weak fine subangular blocky structure; friable; many roots; moderately acid; clear wavy boundary. [(2 to 5 inches) thick]

Bt1--58 to 81 cm (23 to 32 inches); brown (7.5YR 4/4) silty clay loam; moderate medium subangular blocky structure; firm; few roots; thin clay films on faces of peds and in pores; slightly acid; abrupt smooth boundary. [15 to 36 cm (6 to 14 inches) thick]

Bt2--81 to 89 cm (32 to 35 inches); brown (7.5YR 4/4) fine sandy loam; weak medium subangular blocky structure; friable; few roots; thin clay films on faces of peds and in pores; neutral; abrupt smooth boundary. [0 to 15 cm (6 inches) thick]

C--89 to 152 cm (35 to 60 inches); light brown (7.5YR 6/4) stratified silt loam and very fine sand, and thin lenses and bands of clay; massive; friable; moderately alkaline.

TYPE LOCATION: Presque Isle County, Michigan; about 7.5 miles northwest of Millersburg; 200 feet east and 60 feet south of northwest corner of sec. 9, T. 35 N., R. 3 E.

RANGE IN CHARACTERISTICS:
Thickness of the solum: commonly 76 to 102 cm (30 to 40 inches) and ranges from 64 to 127 cm (25 to 50 inches)
Rock fragment content: typically absent, at least in the lower part of the series control section
Particle-size control section: averages between 18 and 23 percent clay
Reaction: strongly acid to neutral in the solum

A horizon:
Hue: 7.5YR or 10YR
Value: 3
Chroma: 1 or 2
Texture: silt loam, very fine sandy loam, fine sandy loam, or loam

Ap horizon, where present:
Thickness: 15 to 25 cm (6 to 10 inches)
Hue: 7.5YR or 10YR
Value: 3 or 4
Chroma: 1 or 2

E horizon:
Hue: 7.5YR or 10YR
Value: 5 to 7
Chroma: 2
Texture: silt loam, very fine sandy loam, or fine sandy loam

Bs1 horizon:
Hue: 5YR to 10YR
Value: 3 or 4
Chroma: 3 or 4

Bs2 horizon:
Hue: 5YR or 10YR
Value: 4 or 5
Chroma: 4 to 8
Texture: silt loam, very fine sandy loam, or fine sandy loam

E' horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6
Chroma: 2 or 3
Texture: silt loam or fine sandy loam

Some pedons have E material in cracks and on coatings on peds in the upper 8 cm (few inches) of the Bt horizon.

Bt horizon:
Hue: 5YR to 10YR
Value: 4 or 5
Chroma: 3 or 4
Texture: silt loam, loam, clay loam, fine sandy loam, or silty clay loam

C horizon:
Hue: 2.5YR to 10YR
Value: 5 or 6
Chroma: 3 or 4
Texture: variable, but strata of silt loam, silty clay loam, and very fine sand are most common; thin clayey layers are throughout the horizon

COMPETING SERIES: This is the Isabella series. Isabella soils are not stratified in the lower part of the series control section

GEOGRAPHIC SETTING: Bohemian soils are on lake plains, outwash plains, and deltas of Wisconsinan Age. Slope gradients are dominantly from 0 to 15 percent and range from 0 to 50 percent. The Bohemian soils formed in loamy and sandy glaciofluvial deposits. Mean annual precipitation ranges from 660 to 889 mm (26 to 35 inches). Mean annual temperature ranges from 5.0 to 7.2 degrees C (41 to 45 degrees F).

GEOGRAPHICALLY ASSOCIATED SOILS: The somewhat poorly drained Brimley and poorly drained Bruce soils are in the same drainage sequence. Kalkaska, Rousseau, Rubicon, Emmet, and Blue Lake soils are on nearby till plains and moraines.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained. The potential for surface runoff is low to high depending on slope. Saturated hydraulic conductivity is moderately high. Permeability is moderate in the upper part of the solum and moderately slow in the lower part of the solum and underlying material.

USE AND VEGETATION: A small part is cropped to small grains and hay. The larger part is in permanent pasture or forest. Native forest is northern hardwoods with eastern white pine and red pine. Forested areas are now primarily in sugar maple.

DISTRIBUTION AND EXTENT: MLRAs 93B, 94A, 94B, 94C, 96, and 98 in northern part of the Lower Peninsula and the Upper Peninsula of Michigan. The series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: AMHERST, MASSACHUSETTS

SERIES ESTABLISHED: Chippewa County, Michigan, 1927.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from a depth of 0 to 28 cm (11 inches) (Oe, A, E horizons).
Albic horizon: from a depth of 13 to 28 cm (5 to 11 inches) and 51 to 58 cm (20 to 23 inches) (E, E' horizons).
Spodic horizon: from a depth of 28 to 51 cm (11 to 20 inches) (Bs1, Bs2 horizons).
Argillic horizon: from a depth of 58 to 89 cm (23 to 35 inches) (Bt1, Bt2 horizons).

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National Cooperative Soil Survey
U.S.A.