LOCATION VIDOR TX

Tentative Series
JKW-CLN
07/2014

VIDOR SERIES

The Vidor series consists of very deep, poorly drained soils. These nearly level soils formed in loamy fluviomarine deposits of the Beaumont Formation of late Pleistocene age. Slopes range from 0 to 1 percent. Mean annual temperature is about 20 degrees C (68 degrees F), and mean annual precipitation is about 1422 mm (57 in).

TAXONOMIC CLASS: Fine-silty, siliceous, active, thermic Vermic Natraqualfs

TYPICAL PEDON: Vidor silt loam-woodland (Colors are for moist soil unless otherwise stated.)

A--0 to 10 cm, (0 to 4 in); grayish brown (10YR 5/2) silt loam; weak fine granular structure; friable, slightly hard, slightly sticky, slightly plastic; many very fine and fine roots and common medium roots; many very fine and fine interstitial pores; 80 percent by volume crawfish krotovinas; 1 percent fine black (N 2/0) iron-manganese nodules; 10 percent fine prominent yellowish red (5YR 5/6) masses of oxidized iron with clear boundaries in matrix; 10 percent fine distinct brownish yellow (10YR 6/6) masses of oxidized iron with clear boundaries in matrix; 30 percent fine faint light brownish gray (10YR 6/2) iron depletions with clear boundaries in matrix surrounding masses of oxidized iron; electrical conductivity of 0.2 dS/m; exchangeable sodium percentage of 4.0; 1 very strongly acid; clear smooth boundary. (8 to 20 cm [3 to 8 in] thick)

Bg--10 to 31 cm, (4 to 12 in); light brownish gray (10YR 6/2) silt loam; weak coarse subangular blocky structure; firm, hard, slightly sticky, slightly plastic; many very fine and fine roots; common very fine interstitial and tubular pores; 70 percent by volume crawfish krotovinas; 2 percent fine black (N 2/0) iron-manganese nodules; 5 percent fine prominent yellowish red (5YR 5/6) masses of oxidized iron with clear boundaries lining pores; 5 percent fine prominent strong brown (7.5YR 5/6) masses of oxidized iron with clear boundaries lining pores; 15 percent fine and medium distinct brownish yellow (10YR 6/6) masses of oxidized iron with diffuse boundaries in matrix; electrical conductivity of 0.4 dS/m; exchangeable sodium percentage of 8.0; very strongly acid; clear smooth boundary. (13 to 28 cm [5 to 11 in] thick)

Btng/Eg1--31 to 68 cm, (12 to 27 in); gray (10YR 5/1) clay loam; moderate coarse subangular blocky structure; very firm, very hard, very sticky, very plastic; many fine roots and common medium and coarse roots; common fine tubular pores; 50 percent by volume crawfish krotovinas; 25 percent distinct very pale brown (10YR 8/2) interfingering of albic material of silt loam texture; 10 percent distinct grayish brown (10YR 5/2) clay films; 5 percent fine prominent yellowish red (5YR 5/6) masses of oxidized iron with sharp boundaries on surfaces along root channels; 10 percent fine and medium distinct brownish yellow (10YR 6/6) masses of oxidized iron with diffuse boundaries on surfaces along root channels; 10 percent fine prominent strong brown (7.5YR 5/8) masses of oxidized iron with clear boundaries on surfaces along root channels; electrical conductivity of 0.7 dS/m; exchangeable sodium percentage of 13.0; very strongly acid; gradual smooth boundary. (combined thickness of the Btng/Eg horizons is 47 to 98 cm [19 to 39 in])

Btng/Eg2--68 to 112 cm, (27 to 44 in); gray (2.5Y 6/1) silty clay loam; moderate medium prismatic structure parting to moderate medium angular blocky; very firm, very hard, very sticky, very plastic; common very fine roots and fine roots; common fine tubular pores; 55 percent by volume crawfish krotovinas; 15 percent distinct very pale brown (10YR 8/2) interfingering of albic material of silt loam texture; 30 percent distinct gray (2.5Y 6/1) clay films on all faces of peds; 1 percent fine distinct white (2.5Y 8/1) barite crystals; 3 percent fine prominent strong brown (7.5YR 5/6) masses of oxidized iron with clear boundaries in matrix; 15 percent fine and medium distinct yellowish brown (10YR 5/6) masses of oxidized iron with clear boundaries in matrix; 20 percent fine to coarse prominent greenish gray (5BG 5/1) iron depletions with diffuse boundaries on surfaces along root channels; electrical conductivity of 0.9 dS/m; exchangeable sodium percentage of 18.0; strongly acid; gradual smooth boundary.

Btng1--112 to 153 cm, (44 to 60 in); gray (2.5Y 6/1) clay loam; moderate coarse angular blocky structure; very firm, very hard, very sticky, very plastic; common fine roots; common fine tubular pores; 30 percent by volume crawfish krotovinas; 10 percent distinct very pale brown (10YR 8/2) interfingering of albic material of silt loam texture; 30 percent distinct gray (2.5Y 6/1) clay films on all faces of peds; 2 percent fine distinct white (2.5Y 8/1) barite crystals; 5 percent fine black (N 2/0) iron-manganese nodules with sharp boundaries; 5 percent fine prominent reddish yellow (7.5YR 6/6) masses of oxidized iron with clear boundaries in matrix; 10 percent fine prominent red (2.5YR 5/6) masses of oxidized iron with clear boundaries in matrix; 15 percent fine and medium distinct brownish yellow (10YR 6/6) masses of oxidized iron with clear boundaries in matrix; 30 percent medium and coarse prominent greenish gray (5G 5/1) iron depletions with diffuse boundaries on surfaces along root channels; electrical conductivity of 1.4 dS/m; exchangeable sodium percentage of 20.0; moderately acid; gradual smooth boundary. (combined thickness of the Btng horizon is 45 to 125 cm [18 to 49 in])

Btng2--153 to 183 cm, (60 to 72 in); gray (2.5Y 6/1) clay loam; moderate coarse angular blocky structure; very firm, very hard, very sticky, very plastic; common fine roots; common fine tubular pores; 30 percent distinct gray (2.5Y 6/1) clay films on all faces of peds; 30 percent by volume crawfish krotovinas; 10 percent distinct very pale brown (10YR 8/2) interfingering of albic material of silt loam texture; 10 percent fine distinct black (10YR 2/1) iron-manganese nodules; 10 percent fine and medium prominent red (2.5YR 5/6) masses of oxidized iron with clear boundaries in matrix; 10 percent fine prominent brownish yellow (10YR 6/8) masses of oxidized iron with sharp boundaries in matrix; 20 percent fine and medium prominent reddish yellow (7.5YR 6/6) masses of oxidized iron with clear boundaries in matrix; electrical conductivity of 1.8 dS/m; exchangeable sodium percentage of 19.0; slightly acid; gradual smooth boundary.

Btng3--183 to 203 cm, (72 to 80 in); gray (2.5Y 6/1) clay loam; weak very coarse subangular blocky structure; very firm, very hard, very sticky, very plastic; common very fine roots; common fine tubular pores; 25 percent distinct gray (2.5Y 6/1) clay films on all faces of peds; 30 percent by volume crawfish krotovinas; 5 percent distinct very pale brown (10YR 8/2) interfingering of albic material of silt loam texture; 2 percent fine distinct black (N 2/0) iron-manganese nodules with sharp boundaries in matrix; 10 percent fine and medium prominent yellowish red (5YR 4/6) masses of oxidized iron with clear boundaries in matrix; 15 percent fine and medium distinct brownish yellow (10YR 6/8) masses of oxidized iron with clear boundaries in matrix; electrical conductivity of 2.3 dS/m; exchangeable sodium percentage of 14.0; moderately acid.

TYPE LOCATION: Orange County, Texas; from the intersection of Highway 62 and Lemonville road near Mauriceville; 1.6 miles north on Highway 62 to pipeline; 0.3 mile east on pipeline; 500 feet west in forest. Mauriceville topographic quadrangle; Latitude: 30 degrees, 13 minutes, 50.30 seconds N; Longitude: 93 degrees, 51 minutes, 55.8 seconds W; WGS84.

RANGE IN CHARACTERISTICS:

Soil Moisture: An aquic soil moisture regime. These soils are saturated with reducing conditions during most of the winter season in normal years.
Mean annual soil temperature: 20.6 to 21.7 degrees C. (69 to 71 degrees F.)
Depth to argillic horizon: 23 to 58 cm (9 to 23 in)
Depth to natric horizon: 23 to 58 cm (9 to 23 in)
Depth to salt accumulations: 66 to 79 cm (26 to 31 in)

Particle-size control section: (weighted average)
Clay content: 28 to 33 percent
Sands coarser than very fine sand content: 4 to 15 percent
CEC/clay ratio: 0.45 to 0.55
Exchangeable Sodium Percentage: 15 to 20

A Horizon
Hue: 10YR
Value: 4 to 6
Chroma: 1 or 2
Texture: silt loam
Clay content: 8 to 20 percent
Masses of oxidized iron: amount- 6 to 25 percent, color-shades of brown, red or yellow
Iron depletions: amount- 0 to 20 percent, color-shades of gray
Electrical Conductivity (dS/m): 0.1 to 0.5
Exchangeable Sodium Percentage: 2 to 8
Reaction: extremely acid to strongly acid

Bg Horizon
Hue: 10YR or 2.5Y
Value: 5 to 7
Chroma: 1 or 2
Texture: silt loam or silty clay loam
Clay content: 12 to 25 percent
Masses of oxidized iron: amount- 8 to 35 percent, color-shades of brown, red or yellow
Iron depletions: amount- 0 to 25 percent, color-shades of gray
Electrical Conductivity (dS/m): 0.1 to 0.5
Exchangeable Sodium Percentage: 4 to 12
Reaction: extremely acid to strongly acid

Btng/Eg Horizons
Hue: 10YR or 2.5Y
Value: 6 or 7
Chroma: 1 or 2
Texture: silt loam, silty clay loam or clay loam
Clay content: 30 to 38 percent
Masses of oxidized iron: amount- 8 to 30 percent, color-shades of brown, red or yellow
Iron depletions: amount- 0 to 25 percent, color-shades of gray
Electrical Conductivity (dS/m): .3 to 1.2
Exchangeable Sodium Percentage: 13 to 18
Reaction: extremely acid to strongly acid

Btng Horizons
Lower part
Hue: 10YR, 2.5Y or 5Y
Value: 6 or 7
Chroma: 1 or 2
Texture: silty clay loam, clay loam, silty clay or clay
Clay content: 30 to 42 percent
Masses of oxidized iron: amount- 8 to 30 percent, color-shades of brown, red or yellow
Iron depletions: amount- 0 to 25 percent, color-shades of gray
Electrical Conductivity (dS/m): 1 to 3
Exchangeable Sodium Percentage: 15 to 25
Reaction: extremely acid to strongly acid

COMPETING SERIES: These are the no series in the same family. Similar soils are the Bonn (LA), Brimstone (LA), Deeford (LA), Diboll (TX), Foley (AR), Hilleman (AR), Huey (IL), Peoria (MS), and Verdun (LA) series.

Bonn, Brimstone, and Verdun soils: have glossic material; do not have at least 25 percent bioturbation within 100 cm (40 in) of the soil surface
Deeford, Diboll, Foley, Hilleman, and Peoria soils: have albic horizon; glossic material; do not have at least 25 percent bioturbation within 100 cm (40 in) of the soil surface
Huey soils: do not have at least 25 percent bioturbation within 100 cm (40 in) of the soil surface

GEOGRAPHIC SETTING:
Parent material: loamy fluviomarine deposits of late Pleistocene age
Landscape: flat coastal plain
Landform: flats
Slope: 0 to 1 percent
Mean annual air temperature range: 19.5 to 20.6 degrees C (67 to 69 degrees F.
Mean annual precipitation range: 1219 to 1524 mm (48 to 60 in)
Precipitation Pattern: Rainfall is generally uniform throughout the year with slight peaks in the spring and fall.
Frost-free period: 240 to 300 days
Elevation: 3 to 22.9 m (10 to 75 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Camptown (TX), Evadale (TX), Gist (TX), and Texla (TX) series.
Camptown soils: are very poorly drained; in open depressions
Evadale soils: have ESP values less than 15; on a similar landform
Gist soils: do not hve aquic conditions; are moderately well drained; are pimple mounds
Texla soils: do not have aquic conditions; are moderately drained; are oblong mounds and relict meander belt bars and levees

DRAINAGE AND PERMEABILITY: Poorly drained. Permeability is slow. Runoff is medium. A perched water table exists from 10 to 152 cm (4 to 60 in) below the surface during the winter and early spring months during normal years.

USE AND VEGETATION: These soils are used mainly for timber and native pasture. Most forested areas are a mix of pine and hardwoods, mainly loblolly pine, water oak, and sweetgum. The understory vegetation is mainly pinehill bluestem, longleaf uniola, spreading panicum, brownseed paspalum, splitbeard bluestem, greenbrier, Carolina jessamine, and southern bayberry.

DISTRIBUTION AND EXTENT: Southeast Texas mainly east of the Trinity River and possibly southwestern Louisiana; LRR T; Western Gulf Coast Flatwoods (MLRA 152B); Small extent

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

SERIES PROPOSED: Orange County, Texas, 2014. The name is for a city in Orange County, Texas.

REMARKS: These soils were previously mapped as the Evadale series. During the update of MLRA 152B, areas correlated as the Evadale series showed signs of poor pine growth. Several sites were chosen for characterization sampling where data revealed elevated levels of exchangeable sodium.

Diagnostic horizons and features recognized in this pedon are:
Particle size control section: 31 to 81 (12 to 32 in). (Btng/Eg1 and Btng/Eg2 horizons)

Ochric epipedon: 0 to 10 cm (0 to 4 in). (A horizon)

Argillic horizon: 31 to 203 cm (12 to 80 in). (Btng/Eg1, Btng/Eg2, Btng1, Btng2, Btng3 horizons)

Natric horizon: 31 to 203 cm (12 to 80 in). (Btng/Eg1, Btng/Eg2, Btng1, Btng2, Btng3 horizons)

Aquic conditions: 0 to 112 cm (0 to 44 in) during the winter and early spring months.

Vermic feature: crawfish bioturbation throughout

Additional Comments:

The assignment of the cation-exchange activity class is supported by laboratory data from the Texas A&M University Soil Characterization Laboratory on number S00TX-361-001 from Orange County, Texas.

ADDITIONAL DATA: Laboratory data from the Texas A&M University Soil Characterization Laboratory on number S00TX-361-001 from Orange County, Texas and on pedon numbers S00TX-351-001 and S00TX-361-002.

Taxonomic Version: Keys to Soil Taxonomy, Eleventh Edition, 2010

National Cooperative Soil Survey
U.S.A.