LOCATION TALLA MS
Established Series
Rev. WMK:WIS:RBH
11/2018
TALLA SERIES
The Talla series consist of deep, somewhat poorly drained soils that have a concentration of exchangeable sodium in the subsoil. Permeability is moderately slow. These soils formed in loamy, fluvial sediments. They mainly are on older fluvial terraces of the Southern Coastal Plain Major Land Resource Area. These are nearly level soils; slopes range from 0 to 2 percent.
TAXONOMIC CLASS: Fine-loamy, siliceous, active, thermic Glossaquic Natrudalfs
TYPICAL PEDON: Talla silt loam - cultivated. (Colors are for moist soils unless otherwise stated.)
Ap--0 to 6 inches; brown (10YR 5/3) silt loam; weak fine granular structure; very friable; many fine roots; slightly acid; abrupt smooth boundary. (4 to 10 inches thick)
E1--6 to 13 inches; mottled strong brown (7.5YR 5/6), yellowish brown (10YR 5/6), gray (10YR 6/1), and light yellowish brown (10YR 6/4) silt loam; weak fine and medium subangular blocky structure; very friable, firm in place; few fine roots; common fine pores; few fine black and brown stains and soft bodies; strongly acid; gradual wavy boundary.
E2--13 to 24 inches; mottled light yellowish brown (10YR 6/4), gray (10YR 6/1), and yellowish brown (10YR 5/6) silt loam; weak fine and medium subangular blocky structure; friable; few fine roots; common fine pores; few fine black and brown stains and soft bodies; strongly acid; gradual wavy boundary. (Combined thickness of the E horizon is 10 to 26 inches.)
Bt--24 to 38 inches; mottled pale brown (10YR 6/3), gray (10YR 6/1), yellowish brown (10YR 5/6), and strong brown (7.5YR 5/6) loam; weak medium prismatic parting to weak medium subangular blocky structure; firm; few fine roots; common fine pores; common fine black and brown stains and soft bodies; gray silt coatings on peds and in seams; thin patchy clay films; strongly acid; gradual wavy boundary. (8 to 16 inches thick)
Btnc/E--38 to 61 inches; mottled light yellowish brown (10YR 6/4), gray (10YR 6/1), yellowish brown (10YR 5/6), and strong brown (7.5YR 5/6) loam (B); weak medium prismatic parting to weak medium subangular blocky structure; firm; few fine roots; common fine pores; common fine black and brown stains and concretions; approximately ten percent gray silt coatings (E) on peds and in seams; thin patchy clay films; very strongly acid. (5 to 24 inches thick)
Btnc--61 to 79 inches; mottled strong brown (7.5YR 5/6), gray (10YR 6/1), and yellowish brown (10YR 5/4) loam; weak medium prismatic parting to weak medium subangular blocky structure; firm; common fine pores; common fine black and brown stains and concretions; gray silt coatings on peds and in seams; patchy clay films; strongly acid.
TYPE LOCATION: Union County, Mississippi; approximately 1 1/4 miles northeast of Troy Dowdy Store, 2000 feet south of blacktop road. Center of E1/2SW1/4NW1/4 sec. 15, T. 8 S., R. 2 E.
RANGE IN CHARACTERISTICS: Combined thickness of the A and E horizons ranges from 18 to 30 inches. Solum thickness ranges from 60 to 80 inches or more. Exchangeable sodium percentage increases with depth and exceeds 15 percent at a depth that ranges from 28 to 40 inches, and within a depth of 16 inches below the upper boundary of the argillic horizon. The upper 20 inches of the Bt horizon has from 18 to 27 percent clay. Brown and black stains or concretions or both commonly are few to many in all horizon below the Ap horizon. The soil is very strongly acid or strongly acid except for surface layers that have been limed.
The A horizon has hue of 10YR, value of 4 to 6, and chroma of 3 or 4, with or without brownish mottles. It is fine sandy loam, loam, or silt loam.
The E horizon commonly is mottled in shades of gray and brown. In some pedons, it has a matrix in hue of 10YR, value of 5 or 6, and chroma of 2 to 4; and mottles in shades of brown or gray are few to many. Texture is fine sandy loam, loam, or silt loam.
The upper part of the Bt horizon commonly is mottled in shades of brown and gray. Less commonly it has a brownish matrix with mottles in shades of brown and gray. Texture is loam, silt loam, or sandy clay loam. Seams of gray silty material between peds are as much as 10 percent of the volume in some pedons.
The Btnc/E horizon is mottled in shades of brown and gray; the brownish portion has hue of 10YR or 7.5YR, value of 3 to 6, and chroma of 3 to 8; the grayish portion has hue of 10YR or 2.5Y, value of 5 or 6, and chroma of 1 or 2. Structure is weak or moderate medium or coarse prismatic, and the consistence is firm or very firm in place, but when disturbed the prisms part with moderate pressure to weak or moderate medium subangular blocky. The E part is discontinuous gray silt coatings or interfingers between the faces of the prisms, with more on the vertical than the horizontal. These gray silt coats commonly make up less than 15 percent of the matrix. Texture of the B part is loam, clay loam, or sandy clay loam.
The Btnc horizon is mottled in shades of brown and gray; the brownish portion has hue of 7.5YR or 10YR, value of 3 to 5, and chroma of 3 to 8; the grayish portion has hue of 10YR or 2.5Y, value of 5 to 7, and chroma of 1 or 2. Black and brown concretions and stains commonly are few to many. Texture is loam, clay loam, or sandy clay loam.
COMPETING SERIES: There are no other series in the same family. Closely related series include the
Bonn,
Bude,
Deerford,
Egypt,
Foley, Hilleman,
Lafe, McCrory,
Peoria,
Pheba,
Rosella,
Stuttgart,
Tippo, and
Wanilla soils. The Bonn, Deerford, Foley, Hilleman, McCrory, Peoria, and Rosella soils have an aquic moisture regime. In addition, Bonn, Deerford, Foley, Hilleman, and Peoria are fine-silty in the particle-size control section. Bude, Egypt, Pheba, Tippo, and Wanilla soils do not have a natric horizon. In addition, Bude and Egypt are fine-silty in the particle-size control section, and Pheba, Tippo, and Wanilla are coarse-silty in the particle-size control section. Lafe soils are fine-silty in the particle-size control section and have mixed mineralogy. Stuttgart soils are fine in the particle-size control section and have montmorillonitic mineralogy.
GEOGRAPHIC SETTING: The Talla soils are on nearly level, on broad, old stream terraces and uplands of the Southern Coastal Plain Major Land Resource Area. Slopes are 0 to 2 percent. The soils formed in loamy, fluvial sediments that are underlain by older, contrasting geologic formations. The climate is warm and humid. The mean annual temperature is about 62 degrees Fahrenheit and the mean annual precipitation is about 48 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Bude,
Mantachie,
Marietta,
Ora,
Pheba,
Prentiss, and
Providence series. Bude, Mantachie, Marietta, Ora, Pheba, Prentiss, and Providence soils do not have a natric horizon. Also, Bude soils are fine-silty in the control section and have a fragipan; Mantachie soils do not have a diagnostic horizon; Marietta soils have a cambic horizon and are medium acid to mildly alkaline; Ora, Pheba, Prentiss, and Providence soils have a fragipan. The somewhat poorly drained Bude soils are in similar positions as the Talla soils. The somewhat poorly drained Mantachie soils and the moderately well drained Marietta soils are on flood plains. The moderately well drained Ora, Prentiss, and Providence are on slightly higher parts of the terrain on terraces and uplands. The somewhat poorly drained Pheba soils are in similar positions as the Talla soils.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow to medium runoff; moderately slow permeability. Water table is at a depth of 1 to 3 feet from the surface during wet seasons from December to April.
USE AND VEGETATION: Most areas of this soil are used for cropland. Principal crops are cotton, corn, and soybeans. Pasture and hay are also suited. Common trees in wooded areas include green ash, eastern cottonwood, cherrybark oak, loblolly pine, sweetgum, and yellow-poplar.
DISTRIBUTION AND EXTENT: Mississippi. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Union County, Mississippi; 1975.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from surface to a depth of about 6 inches (Ap horizon).
Argillic horizon - the zone from approximately 24 to 79 inches (Bt, B/E, and Btc horizons).
Natric horizon - the zone from approximately 38 to 79 inches (B/E, Btc horizons).
Glossic Natrudalfs feature - albic materials that interfinger into the natric horizon; the zone from approximately 38 to 79 inches (B/E, Btc horizons).
ADDITIONAL DATA: Laboratory data: Chemical analyses, particle size distribution and engineering test data for the typical pedon are published in the Soil Survey of Union County, Mississippi (issued April 1979), pp. 86-88.
National Cooperative Soil Survey
U.S.A.