LOCATION TALCOT MN+IA

Established Series
Rev. HRF-AGG-RJB
06/2015

TALCOT SERIES

The Talcot series consists of very deep, poorly and very poorly drained soils that formed in glacial outwash consisting of a 24 to 40 inch thick loamy mantle over sandy or sandy-skeletal sediments. These soils are on outwash plains and stream terraces. They have moderate permeability in the upper part and rapid permeability in the lower part. They have slopes of 0 to 2 percent. Mean annual precipitation is 28 inches. Mean annual air temperature is 48 degrees F.

TAXONOMIC CLASS: Fine-loamy over sandy or sandy-skeletal, mixed, superactive, calcareous, mesic Typic Endoaquolls

TYPICAL PEDON: Talcot silty clay loam on a slightly depressed level area in a cultivated field. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 10 inches; black (N 2/0) silty clay loam, very dark gray (10YR 3/1) dry; cloddy parting to weak medium subangular block structure; friable; common fine fragments of snail shells; slightly effervescent; slightly alkaline; abrupt smooth boundary. (6 to 10 inches thick)

A1--10 to 19 inches; black (10YR 2/1) silty clay loam, very dark gray (10YR 3/1) dry; moderate very fine subangular blocky structure; friable; few fine fragments of snail shells; slightly effervescent; slightly alkaline; gradual wavy boundary. (5 to 12 inches thick)

A2--19 to 23 inches; very dark gray (5Y 3/1) silty clay loam, few narrow tongues of black (5Y 2/1) and olive gray (5Y 5/2); weak very fine subangular blocky structure; friable; few fine fragments of snail shells; few fine distinct olive (5Y 5/3) Fe concentrations and dark brown (7.5YR 3/2) stains along old root channels;slightly effervescent; slightly alkaline; gradual wavy boundary. (0 to 6 inches thick)

Bg1--23 to 26 inches; dark gray (5Y 4/1) silty clay loam; few tongues of olive gray (5Y 5/2); weak very fine subangular blocky structure; friable; many fine faint gray (5Y 5/1) Fe depletions and many fine distinct olive (5Y 5/4) Fe concentrations; slightly effervescent; slightly alkaline; gradual wavy boundary. (2 to 10 inches thick)

Bg2--26 to 30 inches; olive gray (5Y 5/2) clay loam; weak very fine subangular blocky structure; friable; many fine faint light olive gray (5Y 6/2) Fe depletions and few fine distinct light olive brown (2.5Y 5/6) and pale olive (5Y 6/4) Fe concentrations; slightly effervescent; slightly alkaline; clear wavy boundary. (3 to 16 inches thick)

2C1g--30 to 36 inches; variegated olive (5Y 5/3), olive gray (5Y 5/2), and pale olive (5Y 6/3) loamy coarse sand; single grain; loose; few fine distinct light olive brown (2.5Y 5/6) Fe concentrations; slightly effervescent; slightly alkaline; clear wavy boundary.

2C2g--36 to 60 inches; variegated olive (5Y 5/3 and 5/4), olive gray (5Y 5/2), yellowish brown (10YR 5/4) and dark yellowish brown (10YR 4/4) gravelly coarse sand; single grain; loose; about 25 percent gravel; slightly effervescent; slightly alkaline.

TYPE LOCATION: Carver County, Minnesota; about 4 miles north and 3 miles west of Norwood; 2,240 feet east and 120 feet south of the northwest corner of sec. 29, T. 116 N., R. 26 W.

RANGE IN CHARACTERISTICS: Thickness of the upper mantle ranges from 24 to 40 inches. Rock fragments are in the upper mantle range from 0 to 10 percent. The 2C horizon has 10 to 40 percent rock fragments of mixed lithology. The mollic epipedon ranges from 14 to 24 inches in thickness. The upper mantle averages between 30 and 35 percent clay and 15 to about 40 percent of fine sand and coarser. The calcium carbonate equivalent averages between about 5 and 15 percent. The upper mantle ranges from slightly alkaline to moderately alkaline but the lower part of the B horizon in some pedons is neutral. Few to many limy shell fragments are common in some part of the A horizon.

The A horizon has hue of 10YR to 5Y, value of 2 or 3, and chroma of 1 or is neutral with value of 2 or 3. It is clay loam or silty clay loam. It has weak or moderate granular or subangular blocky structure.

The Bg horizon has hue of 2.5Y or 5Y, value of 4 or 5, and chroma of 0 to 2 or is neutral with value of 4 or 5. However, it has subhorizons with chroma higher than 2 in the lower part of some pedons. It is clay loam or silty clay loam, but it is sandy loam, sandy clay loam, or loam in the lower part of some pedons. Transitional layers of sandy loam are less than 5 inches thick.

The 2Cg horizon has hue of 2.5Y or 5Y with value and chroma of 2 to 6. It is stratified coarse sand, sand, loamy coarse sand, loamy sand or their gravelly analoques..

COMPETING SERIES: These are the Mayer, and Regal series in the same family. Mayer soils have 18 to 30 percent clay in the fine-loamy mantle. Regal soils have a fine-loamy mantle less than 20 inches thick.

GEOGRAPHIC SETTING: Talcot soils have concave or plane slopes on stream terraces and glacial outwash plains. They have slopes of less than 2 percent. They formed in glacial outwash consisting of a 24 to 40- nch loamy mantle over sandy or sandy-skeletal sediments. These sediments are Late Wisconsinan in age. Mean annual precipitation is 24 to 32 inches. Mean annual air temperature is 45 to 52 degrees F.
Frost free days range from 145 to 160. Elevation above sea level ranges from 900 to 1,250 feet.

GEOGRAPHICALLY ASSOCIATED SOILS: The main ones are the Biscay, Cylinder, Fairhaven, and Wadena soils which formed in materials similar to those of the Talcot soils. Well drained Fairhaven and Wadena and somewhat poorly drained Cylinder soils have higher lying or more sloping landscapes. Poorly and very poorly drained Biscay soils have landscapes similar to Talcot soils but lack free carbonates in the 10- to 20-inch depth zone. All of the associated soils are Mollisols.

DRAINAGE AND PERMEABILITY: Poorly and very poorly drained. Runoff is low on the poorly drained phase and ponded on the very poorly drained phase. Permeability is moderate in the upper part and rapid in the lower part. Seasonal high saturation occurs at or near the surface in spring during normal years.

USE AND VEGETATION: Most of these soils are drained and cropped primarily to corn and soybeans. Undrained soils are used primarily for growing pasture. The native vegetative cover is a herbaceous wetland community commonly inhabited with Bluejoint Grasses, Fowl Bluegrasses, Green Muhlies, Fox Sedges, Field Sedges, Dudleys Rushes, Torreys Rushes, Swamp Milkweeds, False Sneezeweeds, False Asters, New England Asters, White Panicled Asters, and Wild Mints.

DISTRIBUTION AND EXTENT: South central Minnesota and north central Iowa. Moderately extensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota

SERIES ESTABLISHED: Brown County, Minnesota, 1949.

REMARKS: Diagnostic horizons recognized in this pedon are: mollic epipedon - zone from surface to 23 inches (Ap, A1, and A2 horizons); calcareous family - free carbonates at 10 to 20 inches; aquic moisture regime - low chroma below mollic epipedon.

Competing series were not updated as of this revision.

National Cooperative Soil Survey
U.S.A.