LOCATION VIDRINE                 LA+TX

Established Series
BAT-DRM-RM
02/2018

VIDRINE SERIES

The Vidrine series consists of very deep, moderately well drained to somewhat poorly drained soils. These nearly level to very gently sloping soils, on convex circular mounds or mounded areas that have been smoothed, formed in loamy and clayey sediments of late Pleistocene age. Slopes range from 0 to 3 percent. Mean annual air temperature is about 19.5 degrees C (67 degrees F), and mean annual precipitation is about 1549 mm (61in).

TAXONOMIC CLASS: Fine, smectitic, thermic Aquic Glossudalfs

TYPICAL PEDON: Vidrine silt loam, on a smoothed mound, in cropland. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 20 cm (0 to 8 in); dark grayish brown (10YR 4/2) silt loam; weak fine granular structure; friable; common fine roots; common medium faint gray (10YR 5/1) iron depletions and brown (10YR 4/3) iron accumulations; few medium dark brown masses; strongly acid; clear wavy boundary. (Thickness of the Ap horizon is 13 to 30 cm [5 to 12 in])

E--20 to 41 cm (8 to 16 in); yellowish brown (10YR 5/4) silt loam; weak fine subangular blocky structure; friable; few fine roots; many medium tubular pores; many medium faint pale brown (10YR 6/3) and light yellowish brown (10YR 6/4) iron accumulations; common medium yellowish brown masses; few fine faint yellowish brown (10YR 5/6) stains along roots and in pores; very strongly acid; clear irregular boundary. (Thickness of the E horizon is 13 to 46 cm [5 to 18 in])

Bt/E--41 to 48 cm (16 to 19 in); brown (10YR 5/3) silty clay loam; weak coarse prismatic structure parting to moderate medium subangular blocky; firm; few fine roots; common fine pores lined with clay; light gray (10YR 7/2) silt coats (E) 1 to 5 mm thick on major surfaces of peds and in cracks; many fine prominent red (2.5YR 4/8) iron accumulations; few fine faint grayish brown iron depletions; few fine yellowish brown masses; very strongly acid; clear wavy boundary. (Thickness of the Bt/E horizon is 5 to 11 cm [2 to 4 in])

Btg1--48 to 86 cm (19 to 34 in); grayish brown (10YR 5/2) silty clay; moderate coarse prismatic structure parting to moderate fine angular blocky; firm; few fine roots; common distinct clay films on surfaces of peds; few thin silt coats on vertical surfaces of peds; many fine and medium prominent red (2.5YR 4/8) iron accumulations; common fine yellowish brown masses; strongly acid; gradual wavy boundary. (25 to 76 cm [10 to 30 in] thick)

Btg2--86 to 127 cm (34 to 50 in); light brownish gray (10YR 6/2) silty clay loam; moderate medium subangular blocky structure; firm; common distinct clay films on surfaces of peds; common fine prominent red (2.5YR 4/8) and common fine distinct yellowish brown (10YR 5/6) iron accumulations; few medium brown masses; few fine black stains; slightly acid; gradual wavy boundary. (Combined thickness of the Btg horizon is 55 to 152 cm [22 to 60 in])

BCtg--127 to 203 cm (50 to 80 in); light gray (10YR 7/2) silt loam; weak coarse subangular blocky structure; firm; few faint clay films on vertical faces of peds; common medium prominent brownish yellow (10YR 6/8) and few fine prominent reddish brown (5YR 5/4) iron accumulations; neutral.

TYPE LOCATION: Evangeline Parish, Louisiana; about 2 miles northeast of Basile; 90 yards south of highway along field road, 34 yards west of lane on a smoothed mound area. NE1/4NW1/4 sec. 28, T. 6 S., R. 2 W. Duralde, LA USGS topographic quadrangle; Latitude: 30 degrees, 30 minutes, 30.06 seconds N; Longitude: 92 degrees, 34 minutes 45.52 seconds W; WGS84.

RANGE IN CHARACTERISTICS:
Solum thickness: more than 203 cm (80 in)
Combined thickness of A and E horizons: 36 to 56 cm (14 to 22 in) where mounds are smoothed and 46 to 76 cm (18 to 30 in) in the natural state.

A Horizon:
Hue: 10YR
Value: 3 to 6
Chroma: 2 or 3
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-0 to 5 percent; shades- brown
Redox depletions: amount-0 to 5 percent; shades-gray
Reaction: very strongly acid to moderately acid

E Horizon or BE (where present):
Hue: 10YR
Value: 5 or 6
Chroma: 3 or4
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-5 to 25 percent; shades- brown or yellow
Redox depletions: amount-0 to 5 percent; shades-gray
Reaction: very strongly acid to moderately acid

Bt/E Horizon:
(Bt part)
Hue: 10YR
Value: 4 to 6
Chroma: 3 or 4

(E Part)
Hue: 10YR
Value: 6 or 7
Chroma: 2 to 4
Texture: silt loam, silty clay loam, or silty clay
Redox concentrations: amount-10 to 25 percent; shades- brown, yellow, or red
Redox depletions: amount-0 to 5 percent; shades-gray
Reaction: very strongly acid to moderately acid

Btg Horizon:
Hue: 10YR
Value: 4 to 6
Chroma: 1 or 2
Texture: silty clay loam or silty clay
Redox concentrations: amount-10 to 40 percent; shades- brown, yellow, or red
Other redox features: redox concentrations increase with depth and red redox features are less than 20 percent
Redox depletions: amount-0 to 5 percent; shades-gray
Identifiable secondary carbonate: amount-0 to 5 percent in the lower part
Reaction: strongly acid to moderately alkaline

BCtg Horizon (where present):
Hue: 10YR or 2.5Y
Value: 4 to 7
Chroma: 1 or 2
Texture: is silt loam, clay loam, silty clay loam, or silty clay and is stratified in some pedons.
Redox concentrations: amount-5 to 40 percent; shades- brown, yellow, or red
Redox depletions: amount-0 to 5 percent; shades-gray
Reaction: very strongly acid to moderately alkaline

COMPETING SERIES: There are no other series in the same family. Series in similar families are the Acadia (LA), Aldine (TX), Messer (LA), Orcadia (TX), and Texla (TX) series.
Acadia soils: do not have a glossic horizon.
Aldine soils: in a fine-silty over clayey family
Orcadia soils: do not have aquic conditions in the upper part of the argillic horizon in most years and typically are more acid throughout.
Messer soils: in a coarse-silty family
Texla soils: in a fine-silty family

GEOGRAPHIC SETTING:
Parent material: loamy fluviomarine deposits of Pleistocene age
Landscape: coastal plains
Landform: flats
Microfeature: mounds (Mounds are 0.3 to 1.5 m [1 to 4 ft high] and about 21.3 m (70 ft) in diameter. In some areas Vidrine soils are on convex side slopes with low relief. )
Slope: 0 to 3 percent on mound
Soil Moisture: Udic soil moisture regime. The soil moisture control section is dry less than 90 days in normal years. The summer months are the driest
Mean annual soil temperature: 19.9 to 21.7 degrees C (67 to 71 degrees F)
Mean annual air temperature range: 19.3 to 20.1 degrees C (67 to 69 degrees F)
Mean annual precipitation range: 1499 to 1651 mm (59 to 65 in)
Precipitation Pattern: Rainfall is fairly uniform throughout the year.
Frost-free period: 240 to 300 days
Elevation: 3 to 21 m (10 to 69 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Acadia (LA), Crowley (LA), Kinder (LA), Leton (TX), Mamou (LA), and Mowata (LA) series. These soils are slightly lower in intermound areas.
Acadia and Crowley soils: do not have a glossic horizon.
Kinder, Leton, and Mamou soils: have a fine-silty particle-size control section.
Mowata soils: grayer colors throughout.

DRAINAGE AND PERMEABILITY: Moderately well drained to somewhat poorly drained. Permeability is slow. Runoff is medium to very high. A thin perched water table is above the Btg horizon for 2 to 4 months in winter and spring. Grayish colors caused by wetness are within the upper 25 cm (10 in) of the Btg horizon.

USE AND VEGETATION: In cultivated areas most of the Vidrine soils (mounds) have been smoothed and are cropped to rice, row crops, and pasture. Many areas have encroachment of hardwood and pine trees. Native vegetation was mainly tall prairie grass.

DISTRIBUTION AND EXTENT: Southwest Louisiana; LRR T; MLRA 152B; The series is of large extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas.

SERIES ESTABLISHED: Evangeline Parish, Louisiana; 1970.

REMARKS: These soils were previously mapped as mound phases of the Acadia, Crowley, and Wrightsville soils. These soils are reclassified 01/2000 from coarse-silty over clayey, mixed, hyperthermic Glossaquic Hapludalfs to fine, smectitic, hyperthermic Aquic Glossudalfs based on mineralogy of associated soils, pedon descriptions, field notes, and consultation with field staff. Temperature regime changed to thermic 11/2004 based on four year temperature study. Complete characterization and further study of the series is needed. These soils were correlated in southeast Texas until the update of MLRA 152B. The Texla series replaces the Vidrine series in southeast Texas.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 41 cm (0 to 16 in) (Ap and E horizons)
Argillic horizon: 41 to 127 cm (16 to 50 in) (Bt/E, Btg1, and Btg2 horizons)
Glossic horizon: 41 to 48 cm (16 to 19 in) (Bt/E horizon)
Aquic conditions in upper part of argillic horizon in most years.

ADDITIONAL DATA: none

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.

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National Cooperative Soil Survey
U.S.A.