LOCATION WANILLA MSEstablished Series
TAXONOMIC CLASS: Coarse-loamy, siliceous, active, thermic Aquic Glossudalfs
TYPICAL PEDON: Wanilla silt loam - pasture. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 3 inches; dark grayish brown (10YR 4/2) silt loam; weak fine and medium subangular blocky structure; friable; many fine roots; medium acid; abrupt smooth boundary. (3 to 6 inches thick)
E--3 to 9 inches; mottled dark brown (10YR 4/3), pale brown (10YR 6/3), and brown (10YR 5/3) sandy loam; weak medium subangular blocky structure; friable; many fine roots; medium acid; abrupt smooth boundary. (0 to 8 inches thick.)
B/E1--9 to 26 inches; mottled brownish yellow (10YR 6/8), light brownish gray (10YR 6/2), and pale brown (10YR 6/3) loam (B); weak medium subangular blocky structure; friable; pockets of grayish brown (10YR 5/2) sand grains (E) are about 40 percent of the volume; common medium brown concretions; few fine roots; strongly acid; clear irregular boundary.
B/E2--26 to 40 inches; mottled yellowish brown (10YR 5/8), light brownish gray (10YR6/2), and dark grayish brown (10YR 4/2) loam (B); weak medium subangular blocky structure; friable; tongues of gray (10YR 6/1) silt loam (E); patchy clay films and oxide coatings on faces of peds; common medium brown concretions; many fine pores; strongly acid; clear irregular boundary. (Combined thickness of upper part of B/E horizon is 10 to 38 inches.)
B/E3--40 to 60 inches; mottled light gray (10YR 7/2), brownish yellow (10YR 6/8), and light yellowish brown (10YR 6/4) silt loam (B); weak medium subangular blocky structure; friable; tongues of light brownish gray (10YR 6/2) silt loam (E) about 2 inches wide extending through the horizon; patchy clay films on faces of peds; many fine pores; strongly acid; clear irregular boundary.
B/E4--60 to 70 inches; light gray (10YR 7/2) silt loam (B); many medium distinct strong brown (7.5YR 5/8) mottles; weak medium subangular blocky structure; friable; patchy clay films on faces of peds; light gray (10YR 7/2) tongues of silt loam (E) about 2 inches wide extending through the horizon; many fine pores; strongly acid; clear irregular boundary.
B/E5--70 to 80 inches; grayish brown (10YR 5/2) silt loam (B); many medium distinct strong brown (7.5YR 5/8) mottles; friable; light gray (10YR 7/2) tongues of silt (E) loam about 2 inches wide extending through the horizon; patchy clay films and coatings on faces of peds; strongly acid.
TYPE LOCATION: Lawrence County, Mississippi; .2 mile northeast of Rosella and 75 feet north into pasture. NE1/4NE1/4 sec. 6, T. 7 N., R. 11 E.
RANGE IN CHARACTERISTICS: Solum thickness exceeds 60 inches. The soil is very strongly acid to medium acid in all horizons except surface layers that have been limed.
The A horizon has hue of 10YR, value of 3 to 6, and chroma of 1 to 4, or it is mottled in shades of brown, yellow or gray. It is silt loam, sandy loam, or loam.
The E horizon, if present, has hue of 10YR, value of 4 or 6, and chroma of 2 to 4 with few to many mottles with chroma of 2 or less; or it is mottled in shades of brown, gray, or yellow. It is silt loam, sandy loam, or loam.
The B portion of the B/E horizon cosists of peds between tongues of albic material. The upper part of the B/E horizon is mottled in shades of brown, gray, or yellow or it has a matrix in hue of 10YR or 2.5Y, value of 5 or 6, and chroma of 4 to 8, with few to many mottles in shades of brown, yellow, and gray. It is sandy loam or loam. The E part, which are tongues, pockets and streaks of albic material, has hue of 10YR, value of 5 to 7, and chroma of 1 or 2. It is silt, silt loam or sand. The particle-size control section has 8 to 18 percent clay and 20 to 50 percent silt. The B portion of the lower part of the B/E horizon is mottled in shades of gray and brown or yellow; or, it has a matrix in hue of 10YR, value of 5 to 7, and chroma of 2 or less, with few to many mottles in shades of brown or yellow. It is silt loam, loam, clay loam, or silty clay loam. The E part has hue of 10YR or 2.5Y, value of 5 to 7, and chroma of 2 or less. It is silt loam, loam, or silt. The tongues, pockets and streaks of E material are 1 to 3 inches wide and extend through the B horizon.
COMPETING SERIES: There are no other series in the same family. Closely related soils are the Duralde, Frizzell, Messer, and Tippo series. The Duralde soils have a fine-silty control particle-size class and mixed mineralogy. Frizzell, Messer, and Tippo soils have a coarse-silty particle size class; also, the Tippo soils have mixed mineralogy.
GEOGRAPHIC SETTING: The Wanilla soils are nearly level to gently sloping soils on terraces of the Southern Coastal Plain Major Land Resource Area. Slopes range from 0 to 4 percent. The regolith is marine or fluvial loamy sediments. The climate is warm and humid near the type location; the mean annual temperature is about 66 degrees Fahrenheit, and mean annual precipitation is about 59 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Falkner, Freestone, Guyton, Paden, and Providence soils. The somewhat poorly drained Falkner soils, which have a fine-silty particle size class, are in similar positions as the Wanilla soils. The poorly drained Guyton soils, which are dominantly gray throughout and have a fine-silty particle-size class, are in slightly lower positions on terraces and broad flats in uplands. The moderately well drained Paden and Providence soils, which have a fragipan, mainly are on low ridges in higher parts of the landscape.
DRAINAGE AND PERMEABILITY: Somewhat poorly to moderately well drained; runoff is slow; permeability is moderately slow. The seasonal water table is within a depth of 2.0 to 2.5 feet in periods during winter and early in spring.
USE AND VEGETATION: Most areas of the Wanilla soils are used as pasture and forests. Some areas are used for growing corn, soybeans, and small grains. Forested areas are chiefly mixed hardwoods and pines. Important commercial trees are cherrybark oak, loblolly pine, and sweetgum.
DISTRIBUTION AND EXTENT: Mississippi. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Lawrence County, Mississippi; 1972.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to a depth of about 3 inches (Ap horizon).
Argillic horizon - the zone from approximately 9 to 80 inches (B/E1, B/E2, B/E3, B/E4, B/E5 horizons).
Glossudalfs features - deep wide tongues of albic material in the argillic horizon (B/E1, B/E2, B/E3, B/E4, B/E5 horizons).
Aquic feature - mottles of chroma 2 or less the upper 10 inches of the argillic horizon (B/E1 horizon).
ADDITIONAL DATA: Laboratory data: Particle-size distribution and chemical analysis data for the typical pedon are published in the Soil Survey of Lawrence County, Mississippi (issued February 1978), pp. 44-45.