LOCATION EVANGELINE LA
Established Series
Rev. BAT:DFS
10/2018
EVANGELINE SERIES
The Evangeline series consists of deep, moderately well drained, moderately slowly permeable soils that formed in loess. These soils are on very gently sloping and gently sloping uplands and terraces.
TAXONOMIC CLASS: Fine-silty, mixed, active, thermic Glossic Paleudalfs
TYPICAL PEDON: Evangeline silt loam--forested. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 3 inches; very dark grayish brown (10YR 3/2) silt loam; weak fine granular structure; friable; many fine roots; few fine pores; many wormcasts; slightly acid; abrupt wavy boundary. (2 to 5 inches thick)
A2--3 to 7 inches; dark yellowish brown (10YR 4/4) silt loam; weak fine subangular blocky structure; friable; common fine roots; few fine pores; few very fine soft black bodies; slightly acid; gradual wavy boundary. (0 to 8 inches thick)
B1--7 to 12 inches; strong brown (7.5YR 5/8) silt loam; weak medium subangular blocky structure; friable; few fine roots; few fine pores; thin patchy clay films in pores; few very fine dark brown bodies; slightly acid; gradual wavy boundary. (4 to 14 inches thick) the horizon; strongly acid; abrupt irregular boundary. (10 to 18 inches thick)
B21t--12 to 23 inches; yellowish red (5YR 4/8) silt loam; moderate medium subangular blocky structure; friable; few fine roots; common fine pores lined with clay and thin patchy clay
films on surfaces of peds; few fine soft red bodies; few medium soft brown bodies in the lower part of the horizon; strongly acid; abrupt irregular boundary. (10 to 18 inches thick)
B22t--23 to 30 inches; reddish brown (5YR 4/4) silty clay loam; common fine faint yellowish red mottles; moderate fine subangular blocky structure; friable; few fine roots; thin patchy clay films and black stains on surfaces of peds and in pores; 10 percent of the mass is pale brown (10YR 6/3) silt coatings and discontinuous silt pockets that are 2 to 10 mm thick; small clusters of medium black concretions; very strongly acid; gradual wavy boundary. (5 to 10 inches thick)
B23t--30 to 41 inches; brown (10YR 5/3) silty clay loam; many medium prominent red (2.5YR 4/6) mottles; moderate medium subangular blocky structure; firm; few fine roots along faces of peds; common fine round voids lined with clay; thick continuous clay films on faces of peds; very strongly acid; gradual wavy boundary. (10 to 16 inches thick)
B24t--41 to 63 inches; reddish brown (5YR 4/4) silty clay loam with dark yellowish brown (10YR 4/4) ped faces; few fine faint grayish brown mottles; compound moderate coarse prismatic structure; parting to moderate coarse subangular blocky structure; very firm; few fine roots along faces of peds; few fine pores; thick continuous clay films on faces of peds; thin silt coats on vertical faces of peds; very strongly acid; gradual wavy boundary. (20 to 30 inches thick)
B3t--63 to 80 inches; brown (7.5YR 4/4) silty clay loam; moderate medium subangular blocky structure; friable; few fine pores lined with clay; thick continuous clay films and few patchy black stains on faces of peds; thin silt coats on vertical faces of peds; medium acid.
TYPE LOCATION: Evangeline Parish, Louisiana; 9 miles north of Ville Platte; 0.7 mile south of Bayou Chicot Village, 1.8 miles east of U. S Highway 167, 250 yards north of cattle gap bridge
along trail; sec. 13, T 3 S., R 1 E.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 60 to 100 inches. Typically these soils have less than 3 percent total sand but range to 10 percent.
The A1 or Ap horizon is dark grayish brown (10YR 4/2), brown (10YR 4/3, 5/3), or dark yellowish brown (10YR 4/4, 3/4). Very dark grayish brown (10YR 3/2), or dark brown (10YR 3/3) are within the range where less than 6 inches thick.
The A2 horizon, where present, is grayish brown (10YR 5/2), brown (10YR 4/3, 5/3), pale brown (10YR 6/3), dark yellowish brown (10YR 4/4), yellowish brown (10YR 5/4) or light yellowish brown (10YR 6/4). The A horizon is silt loam. It is slightly acid or medium acid.
The B21t horizon is yellowish red (5YR 4/6, 4/8, 5/6, 5/8), or strong brown (7.5YR 5/6, 5/8). It is heavy silt loam or silty clay loam. It is slightly acid through strongly acid. A discontinuous A'2 horizon of pale brown light silt loam interfingers in the mid Bt horizon and occupies from 10 to 15
percent of the mass. Lower Bt horizon colors are yellowish red (5YR 4/6, 4/8), reddish brown (5YR 4/4, 5/4), brown (7.5YR 4/4, 5/4), dark yellowish brown (10YR 4/4), or yellowish brown (10YR
5/4). 5YR hues occur as matrix, mottles, or surfaces of peds in some part of the lower Bt horizon in all pedons. Texture is silty clay loam. It is very strongly acid through medium acid.
COMPETING SERIES: There are no other series in the same family. Other related series include the
Atwood,
Dossman,
Duralde,
Falkner,
Glenmora,
Memphis,
Messer,
Muskogee, and
Vian series. Atwood and Vian soils lack prominent skeletans in the lower Bt horizons. Dossman soils have clay contents that decrease by 20 percent from the maximum within 50 inches from the top of the B horizons. Duralde, Falkner, Glenmora, and Muskogee soils have gray mottles within 30 inches of the surface, and in addition, Falkner and Glenmora soils have less than 10 percent weatherable minerals in the B horizon. Memphis soils lack interfingers of A' into the Bt horizon. Messer soils have thick silt loam B1 horizons and more than 10 percent sand.
GEOGRAPHIC SETTING: Evangeline soils are on very gently sloping to gently sloping undissected convex ridge tops, narrow drainage divides, and sideslopes. Slope gradient is from 1 to 5 percent. These soils are developed in thick (15 to 30 feet) oxidized and leached, pre-Peorian age loess. The average temperature is about 68 degrees F., and the average annual rainfall is about 58 inches. Thornthwaite P-E index is near 70.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing
Dossman and
Muskogee series and the
Calhoun,
Duralde, and McKamie series. Calhoun and Duralde soils are more poorly drained and occur on more level topography at higher elevations. McKamie soils are clayey and occur at lower elevations.
DRAINAGE AND PERMEABILITY: Moderately well drained; medium runoff; moderate permeabilty in the upper Bt and aoderately slow in the lower Bt
USE AND VEGETATION: Evangeline soils are used principally for woodland. Native vegetation was loblolly pine and hardwood. Cleared areas are plated to cotton, soybeans, sweet potatoes, watermelons, and pasture.
DISTRIBUTION AND EXTENT: Pre-Peorian age loess deposits of Evangeline Parish, Louisiana, and possibly Arkansas, Mississippi, and Tennessee, The series is inextensive.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: AUBURN, ALABAMA
SERIES ESTABLISHED: Evangeline Parish, Louisiana; 1970.
REMARKS: These soils were formerly included in the Providence
series and classified in the Red-Yellow great soil group.
National Cooperative Soil Survey
U.S.A.