LOCATION SOUTHHAVEN MNEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Cumulic Hapludolls
TYPICAL PEDON: Southhaven loam on a 1 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; very dark gray (10YR 3/1) loam, dark grayish brown (10YR 4/2) dry; moderate very fine and fine granular structure; friable; many very fine and fine roots; about 2 percent gravel; slightly acid; abrupt smooth boundary.
A1--8 to 22 inches; very dark brown (10YR 2/2) loam, dark grayish brown (10YR 4/2) dry; weak very fine granular structure; friable; common very fine and fine roots; about 2 percent gravel; slightly acid; clear wavy boundary.
A2--22 to 42 inches; black (10YR 2/1) loam, very dark gray (10YR 3/1) dry; moderate fine subangular blocky structure; friable; common very fine and fine roots; about 2 percent gravel; slightly acid; clear wavy boundary.
A3--42 to 48 inches; black (10YR 2/1) sandy loam, very dark gray (10YR 3/1) dry; few fine prominent dark reddish brown (5YR 3/4) Fe concentrations; weak medium subangular blocky structure; friable; about 3 percent gravel: slightly acid; clear wavy boundary. (combined thickness of the A is 35 to 70 inches)
Bw1--48 to 62 inches; olive brown; (2.5Y 4/3) loam; common fine distinct yellowish brown (10YR 5/4) Fe concentrations; weak medium subangular blocky structure; firm; about 3 percent gravel; slightly acid; clear wavy boundary. (thickness of the Bw is 3 to 16 inches)
2Bw--62 to 66 inches; olive brown (2.5Y 4/3) loamy sand; common fine faint light olive brown (2.5Y 5/4) Fe concentrations; weak medium subangular blocky structure; very friable; about 6 percent gravel; slightly acid; clear wavy boundary. (thickness of the 2Bw is 0 to 8 inches)
2C--66 to 80 inches; olive brown (2.5Y 4/3) gravelly sand; common medium prominent brown (7.5YR 4/4) Fe concentrations; single grain; loose; about 17 percent gravel; neutral.
TYPE LOCATION: Wright County, Minnesota; about 6 miles south of Clearwater; 1400 feet north and 290 feet east of the southwest corner of section 34, T. 122 N., R. 27 W; USGS Annandale quadrangle; lat. 45 degrees 19 minutes 50 seconds N. and long. 94 degrees 4 minutes 29 seconds W., NAD27.
RANGE IN CHARACTERISTICS: The thickness of the mollic epipedon ranges from 35 to 70 inches. Depth to free carbonates is greater than 60 inches. Depth to sandy or gravelly sediments is more than 60 inches. The control section has 16 to 27 percent clay. The content of rock fragments, by volume, in the loamy layers ranges from 0 to 10 percent and up to 20 percent in the underlying sediments.
The A or Ap horizon has hue of 10YR, 2.5Y or neutral, value of 2 or 3, chroma of 0 to 2. It is loam, sandy loam, fine sandy loam, clay loam, or silt loam. The lower part, in places is silty clay. It is strongly acid to neutral.
AB horizons are present in some pedons.
The Bw or Bg horizon has hue of 10YR, 2.5Y, or 5Y, value of 3 to 5, chroma of 1 to 3. It is silt loam, loam, sandy loam, sandy clay loam, silty clay loam, or thin strata of silty clay. It is strongly acid to neutral.
The 2Bw or 2Bg horizon has hue of 10YR or 2.5Y, value of 3 or 4, chroma of 2 or 3. It is sand, loamy sand, loamy coarse sand, or coarse sand. It is strongly acid to neutral.
The 2C or 2Cg horizon has hue of 10YR or 2.5Y, value of 3 to 5, chroma of 2 or 3. It is gravelly sand, gravelly coarse sand, coarse sand or sand. It is strongly acid to slightly alkaline.
COMPETING SERIES: This is the La Prairie series. La Prairie soils have free carbonates throughout the control section.
GEOGRAPHIC SETTING: These soils are on nearly level or concave foot slopes or toe slopes on pitted outwash plains and stream terraces. Slopes range from 0 to 2 percent These soils formed in loamy, colluvial-alluvial sediments underlain with sand or gravel. The mean annual temperature ranges from 40 to 46 degrees F. The mean annual precipitation is 24 to 30 inches. The frost-free days range from 90 to 150 days. Elevation above sea level ranges from 900 to 1400 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Almora, Dorset, Forada and Two Inlets soils. The well drained Almora soils are on slightly higher convex slopes. The somewhat excessively drained Dorset soils and excessively drained Two Inlets soils are on convex slopes. The very poorly drained and poorly drained Forada soils are in depressions and edges of depressions.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate in the upper part and rapid in the lower part. Surface runoff is negligible. Depth to an apparent seasonal water table is 3.5 to 6 feet at some time from November to June in most years.
USE AND VEGETATION: Most of these soils are cultivated. Corn, soybeans, and small grains are the principal crops. Native vegetation was tall grass prairie.
DISTRIBUTION AND EXTENT: East central and western Minnesota. This series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Wright County, Minnesota, 1998.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon-the zone from the surface to a depth of 48 inches(Ap,A1,A2,A3 horizons)); cambic horizon-the zone from 48 to 66 inches(Bw,2Bw horizons); udic moisture regime; cumulic subgroup-mollic soil colors more than 24 inches thick.
ADDITIONAL DATA: Refer to Minnesota Agricultural Experiment Station central file code No.4947 and 4934 for results of laboratory analysis of similar pedon. Soil interpretation record number is MN0776.