LOCATION FOLEY AR+LA MO
Established Series
Rev. LBW
10/2018
FOLEY SERIES
The Foley series consists of very deep, poorly drained, very slowly permeable soils that formed in silty material high in sodium. These level to nearly level soils are on terraces in the Lower Mississippi Valley; MLRA 131. Slopes range from 0 to 3 percent.
TAXONOMIC CLASS: Fine-silty, mixed, active, thermic Albic Glossic Natraqualfs
TYPICAL PEDON: Foley silt loam, 1 percent slopes, cultivated. (Colors are for moist soil unless otherwise stated.)
Ap1--0 to 4 inches; dark grayish brown (10YR 4/2) silt loam; weak fine granular structure; very friable; common fine and very fine continuous tubular pores; many fine and medium roots; few fine distinct light brownish gray iron depletions; few fine and medium black iron-manganese concretions; very strongly acid; abrupt smooth boundary. (3 to 6 inches thick)
Ap2--4 to 9 inches; light brownish gray (10YR 6/2) silt loam; weak medium granular structure; friable; few fine continuous tubular pores; few fine roots; many medium distinct dark grayish brown (10YR 4/2) and common medium distinct dark yellowish brown (10YR 4/4) iron accumulations; common fine and medium black iron-manganese concretions; very strongly acid; clear smooth boundary. (0 to 6 inches thick)
Eg1--9 to 16 inches; gray (10YR 6/1) silt loam; weak medium subangular blocky structure; friable; common fine and very fine continuous tubular pores; few fine roots; few fine distinct yellowish brown (10YR 5/4) and dark grayish brown (10YR 4/2) iron accumulations; common fine and medium black iron-manganese concretions; strongly acid; clear smooth boundary. (6 to 12 inches thick)
Eg2--16 to 20 inches; gray (10YR 6/1) silt loam; weak medium subangular blocky structure; friable; many very fine continuous tubular pores; few fine roots; few fine distinct yellowish brown (10YR 5/4) iron accumulations; common medium black iron-manganese concretions; moderately acid; clear wavy boundary. (0 to 6 inches thick)
B/E1--20 to 26 inches; (Btng) gray (10YR 5/1) silt loam; moderate fine and medium subangular blocky structure; firm; few faint clay films on faces of some peds and in root channels; common fine continuous tubular pores; the (Eg) part of this horizon consists light gray (10YR 7/1) massive silt tongues 1/4 to 2 inches wide extending through the horizon and making up about 30 percent of the total volume; few fine roots throughout; few fine distinct yellowish brown (10YR 5/6) and dark yellowish brown (10YR 4/4) iron accumulations throughout; many medium and coarse black iron-manganese concretions throughout; slightly acid; clear wavy boundary.
B/E2--26 to 41 inches; (Btng) gray (10YR 6/1) silty clay loam; weak coarse prismatic parting to moderate fine and medium blocky structure; firm; few faint clay films on faces of some peds; few fine continuous tubular pores; the (Eg) part of this horizon consists of light gray (10YR 7/1) massive silt tongues 1/2 to 1 1/4 inches wide extending through the horizon and making up about 15 percent of the total volume; few fine roots throughout; few fine distinct yellowish brown (10YR 5/6) and brown (10YR 4/3) iron accumulations throughout; few fine distinct very dark gray (10YR 3/1) manganese accumulations on faces of several peds in B part; common fine and medium black iron-manganese concretions throughout; moderately alkaline; clear wavy boundary.
B/E3--41 to 52 inches; (Btng) gray (10YR 6/1) silty clay loam; weak medium prismatic parting to moderate medium subangular blocky structure; firm; common distinct dark gray (10YR 4/1) clay films on most vertical and horizontal ped faces; few fine continuous tubular pores; the (Eg) part of this horizon consists of light gray (10YR 7/1) massive silt tongues 1/2 to 1 inch wide decreasing in width with depth and making up about 10 percent of the total volume; few fine roots throughout; few fine distinct yellowish brown (10YR 5/8) and brown (10YR 4/3) iron accumulations throughout; common fine distinct very dark gray (10YR 3/1) manganese accumulations on faces of many peds in B part; common medium black iron-manganese concretions throughout; moderately alkaline; gradual wavy boundary.
Btng--52 to 67 inches; gray (10YR 6/1) silt loam; moderate medium subangular blocky structure; firm; common faint dark gray (10YR 4/1) clay films on many vertical and horizontal ped faces; few fine continuous tubular pores; few fine roots; common medium distinct yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4), and strong brown (7.5YR 5/6) iron accumulations throughout; few fine distinct very dark gray (10YR 3/1) manganese accumulations on faces of some peds; many fine black iron-manganese concretions; common pitted carbonate concretions 1/2 to 1 1/2 inch in diameter; moderately alkaline; clear wavy boundary. (Combined thickness of the Btng horizon ranges from 30 to more than 60 inches.)
BCng--67 to 80 inches; light brownish gray (2.5Y 6/2) silt loam; weak medium and coarse subangular blocky structure; very firm and slightly brittle; occasional faint clay films on faces of some peds; few fine continuous tubular pores; few medium distinct yellowish brown (10YR 5/6) and common medium distinct dark yellowish brown (10YR 4/4) iron accumulations; few pitted carbonate concretions 1/2 to 3 1/2 inches in diameter decreasing in number with depth; common fine black iron-manganese concretions; strongly alkaline.
TYPE LOCATION: Woodruff County, Arkansas; 2 1/2 miles north of McCrory on Arkansas Highway 17; 835 feet south and 415 feet east of northwest corner section 27; SW1/4NW1/4NW1/4, sec. 27, T. 8 N., R. 2 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 50 to more than 80 inches.
The Ap has hue of 10YR, value of 4 to 6 and chroma of 2 or value of 5, and chroma of 3. In noncultivated areas, the A horizon have hue of 10YR, value of 3, and chroma of 3, or value of 4 and chroma of 2. A horizons with value of 3 are less than 6 inches thick. Iron-manganese accumulations and depletions are in shades of gray or brown. Texture is silt loam, loam, or very fine sandy loam. Reaction is dominantly very strongly acid to moderately acid, but ranges to neutral from the addition of alkaline irrigation water.
The E horizon and E part of the B/E horizon has hue of 10YR, value of 5 to 7 and chroma of 1 or 2. Iron-manganese accumulations and depletions are in shades of gray or brown. Texture is silt loam, silt, or very fine sandy loam. Reaction ranges from strongly acid to neutral.
The B horizon and B part of the B/E horizon has hue of 10YR, 2.5Y or 5Y, value of 4 to 6, and chroma of 1 or 2. Iron-manganese accumulations and depletions are in shades of gray or brown. Texture is silt loam or silty clay loam. Tongues and interfingers of albic material make up 5 to 30 percent of upper subhorizons. Reaction ranges from strongly acid to strongly alkaline.
The BC horizon has hue of 10YR, 2.5Y or 5Y, value of 4 to 6, and chroma of 1 or 2. Iron-manganese accumulations and depletions are in shades of gray or brown. Texture is silt loam or silty clay loam. Reaction ranges from slightly acid to strongly alkaline.
The C horizon, if present, hue of 10YR, 2.5Y or 5Y, value of 4, 5, or 6, and chroma of 1 or 2. Iron-manganese accumulations and depletions are in shades of gray or brown. Texture is silt loam, loam, fine sandy loam or loamy fine sand, or these textures alternating with thin strata of clay or silty clay. Reaction ranges from slightly acid to strongly alkaline.
COMPETING SERIES: The
Deerford and
Hillemann series are in this family. Deerford soils have higher chromas in the upper part of the argillic horizon. Hillemann soils have redder hues in the upper part of the argillic and are somewhat poorly drained.
GEOGRAPHICAL SETTING: Foley soils are on broad terraces (Pve2) in the Lower Mississippi
Valley. Slopes range from 0 to 3 percent. These soils formed in material high in silt, probably reworked loess. The mean annual precipitation is about 52 inches and the mean annual temperature is about 62 degrees F near the type location.
GEOGRAPHICALLY ASSOCIATED SOILS: These includes the
Amagon,
Bonn,
Calhoun,
Calloway,
Henry,
Jackport,
Lafe and McCrory. Amagon, Bonn, Jackport and Lafe occur on similar landscapes. Amagon and Jackport do not contain natric horizons. Bonn and Lafe soils have natric horizons nearer the soils surface. McCrory soils, which occur on lower terraces and floodplains, are in a fine-loamy particle-size class. Calhoun, Calloway and Henry soils, which occur on higher loess cover terraces, do not contain natric horizons.
DRAINAGE AND PERMEABILITY: Poorly drained; runoff is negligible to medium depending on slope; very slow permeability. A seasonally high water table is within 18 inches of the soil surface from December through April.
USE AND VEGETATION: Most areas are cultivated. Dominant crops are rice, soybeans, and grain sorghum. Minor areas are in woodland of oaks, gums, hickory, and elms.
DISTRIBUTION AND EXTENT: Terraces in the Lower Mississippi Valley of Arkansas, Louisiana, Mississippi, Missouri, and Tennessee; MLRA 131. The series is of large extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: AUBURN, ALABAMA
SERIES ESTABLISHED: East Baton Rouge Parish, Louisiana; 1948.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Ochric epipedon - The zone from the surface to a depth of 20 inches.
Albic horizon - The zone from 4 to 20 inches.
Argillic horizon - The zone from 20 to 67 inches.
Natric horizon - The zone from 20 to 80 inches.
ADDITIONAL DATA: Characterization of the type location by the University of Arkansas Soil Characterization Laboratory. Pedon No. S74AR-147-001.
National Cooperative Soil Survey
U.S.A.