LOCATION FARRINGTON WIEstablished Series
TAXONOMIC CLASS: Sandy, mixed, mesic Aquic Hapludolls
TYPICAL PEDON: Farrington loamy sand - on a 1 percent slope in a cultivated field at an elevation of about 820 feet. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; very dark brown (10YR 2/2) loamy sand, very dark grayish brown (10YR 3/2) dry; weak medium subangular blocky structure; friable; few very fine and fine roots; about 1 percent gravel; neutral; clear smooth boundary. (8 to 12 inches thick)
A--9 to 14 inches; very dark grayish brown (10YR 3/2) loamy sand, dark grayish brown (10YR 4/2) dry; weak medium subangular blocky structure; friable; few very fine and fine roots; about 1 percent gravel; strongly acid; clear irregular boundary. (0 to 12 inches thick)
AB--14 to 18 inches; dark brown (10YR 3/3) loamy sand, brown (10YR 4/3) dry; weak coarse subangular blocky structure; very friable; few very fine and fine roots; about 1 percent gravel; strongly acid; clear smooth boundary. (0 to 12 inches thick)
Bw1--18 to 23 inches; dark yellowish brown (10YR 4/4) loamy sand; weak coarse subangular blocky structure; very friable; few very fine and fine roots; common fine and medium prominent strong brown (7.5YR 5/6) masses of iron accumulation and common fine distinct grayish brown (10YR 5/2) iron depletions; about 1 percent gravel; strongly acid; gradual smooth boundary.
Bw2--23 to 41 inches; strong brown (7.5YR 4/6) sand; single grain; loose; common coarse faint strong brown (7.5YR 5/6) masses of iron accumulation and common fine prominent grayish brown (10YR 5/2) iron depletions; about 1 percent gravel; strongly acid; gradual smooth boundary. (Combined thickness of the Bw horizon ranges from 5 to 24 inches.)
C--41 to 72 inches; yellowish brown (10YR 5/4) coarse sand; single grain; loose; common coarse distinct strong brown (7.5YR 5/8) masses of iron accumulation and common fine prominent grayish brown (10YR 5/2) iron depletions; about 1 percent gravel; moderately acid.
TYPE LOCATION: Pepin County, Wisconsin; about 2 miles north and 3 miles east of Durand; 2000 feet north and 1900 feet west of the southeast corner of sec. 7, T. 25 N., R. 12 W.; USGS Durand North, WI quad.; lat. 44 degrees 39' 36" N; long. 91 degrees 52' 50" W.
RANGE IN CHARACTERISTICS: Thickness of the mollic epipedon ranges from 10 to 24 inches. The particle-size and series control sections average a total of 25 to 65 percent medium, coarse, and very coarse sand; 15 to 35 percent coarse and very coarse sand; and less than 50 percent fine sand or very fine sand. Volume of gravel typically ranges from 0 to 15 percent throughout the pedon. Redox accumulations are typically throughout the soil below the mollic epipedon. Redox depletions with chroma of 2 or less are within a depth of 16 inches or are immediately below the mollic epipedon. Saturation occurs within a depth of 1 to 2.5 feet at some time in most years.
The Ap and A horizon have hue of 7.5YR or 10YR, value of 2 or 3, and chroma of 1 or 2. Reaction naturally ranges from strongly acid to slightly acid but ranges to neutral, where the soil is limed.
The AB horizon has hue of 7.5YR or 10YR and chroma of 2 or 3. It is loamy sand, sand, loamy coarse sand, or coarse sand. Reaction naturally ranges from strongly acid to slightly acid but ranges to neutral, where the soil is limed.
The Bw horizon has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 4 to 6. It is loamy sand, sand, loamy coarse sand, or coarse sand. Reaction naturally ranges from strongly acid to slightly acid but ranges to neutral, where the soil is limed.
Some pedons have a Bg horizon with hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 1 or 2. It is coarse sand, sand, loamy coarse sand, or loamy sand. Reaction ranges from strongly acid to slightly acid.
The C horizon has hue of 7.5YR, 10YR, or 2.5Y, value of 4 to 6, and chroma of 3 to 6. It is coarse sand or sand. Reaction ranges from strongly acid to slightly acid.
Some pedons have a Cg horizon with hue of 10YR or 2.5Y, value of 4 to 6, and chroma of 1 or 2. It is coarse sand or sand. Reaction ranges from strongly acid to slightly acid.
COMPETING SERIES: These are the Litchfield, Minneopa, and Watseka series. Litchfield soils average 50 percent or more fine sand and have loamy strata in the particle-size control section. Minneopa soils have free carbonates in the lower part of the series control section. Watseka soils have less than 5 percent coarse and very coarse sand in the series and particle-size control sections.
GEOGRAPHIC SETTING: Farrington soils are on valley trains in glaciofluvial valleys. Slopes range from 0 to 3 percent. These soils formed in sandy outwash. Mean annual precipitation ranges from 28 to 33 inches. Mean annual air temperature ranges from 46 to 51 degrees F. The frost free period ranges from about 135 to 160 days. Elevation ranges from 700 to 1000 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Finchford and Komro(T) series. The excessively drained Finchford soils and the moderately well drained Komro soils form a drainage sequence with Farrington soils.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Permeability is rapid or very rapid. Farrington soils have an apparent seasonal high water table at a depth of 1 to 2.5 feet in undrained areas for 1 month or more per year at some time during the period of October to June in 6 or more out of 10 years.
USE AND VEGETATION: Most areas of Farrington soils are used for cropland. Corn, soybeans, small grains, and hay are the principal crops. Some areas are used for pastureland and some small areas are in woodland. Native vegetation is a mixture of prairie grasses and sedges.
DISTRIBUTION AND EXTENT: West-central Wisconsin. These soils are of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Pepin County, Wisconsin, 1998. The name is coined.
REMARKS: Prior to 1995, this soil was mapped as the Watseka series.
Diagnostic horizons and features recognized in this pedon are: mollic epipedon - 0 to 18 inches (Ap, A, AB); aquic feature - redox depletions with chroma of 2 or less and aquic conditions immediately below the mollic epipedon in layers with a total thickness of 6 inches or more.
Lab data from pedons with similar parent material and land use indicate that pedons of Farrington soils typically have base saturation of 50 percent or more (by NH4OAc) in all horizons between the mineral soil surface and a depth of 180 cm. However, it is suspected that the very low CEC in the sandy outwash results in drastic changes in B.S. with the addition of few bases from fertilization in cropland areas. Farrington soils may classify as Psammentic Haplumbrepts in their natural state.
ADDITIONAL DATA: Soil Interpretation Record - WI0586