LOCATION ACADIA LA+AR MO TX

Established Series
JDS-JPE-JLD-MJB-AKS
07/2019

ACADIA SERIES

The Acadia series consists of very deep, somewhat poorly drained, very slowly permeable soils that formed in loamy and clayey alluvium derived from Late Pleistocene age terraces. These nearly level to gently sloping soils occur on terraces on flat coastal plains.. Slopes are dominantly 1 to 3 percent but range from 0 to 5 percent. Mean annual precipitation is about 1549 mm (61 in) and the mean annual
air temperature is about 19.5 degrees C (67 degrees F).

TAXONOMIC CLASS: Fine, smectitic, thermic Aquic Paleudalfs

TYPICAL PEDON: Acadia silt loam-- 1 percent slope, in woodland at an elevation of 9.1 meters (30 ft). (Colors are for moist soil unless otherwise stated.)

A--0 to 10 cm (0 to 4 in); brown (10YR 5/3) silt loam; moderate fine and medium granular structure; friable; common fine roots; common fine interstitial pores; 1 percent fine faint brown (10YR 4/3) masses of oxidized iron with clear boundaries on surfaces along root channels; 1 percent fine faint grayish brown (10YR 5/2) iron depletions with clear boundaries in matrix surrounding redox concentrations; very strongly acid; abrupt smooth boundary. (Thickness is 10 to 20 cm [4 to 8 in])

E--10 to 15 cm (4 to 6 in); light yellowish brown (10YR 6/4) silt loam; weak medium subangular blocky structure; friable; common fine roots; common fine tubular pores; 1 percent fine distinct dark yellowish brown (10YR 4/4) masses of oxidized iron with sharp boundaries on surfaces along root channels; very strongly acid; abrupt wavy boundary. (Thickness is 5 to 30 cm [2 to 12 in])

BE--15 to 28 cm (6 to 11 in); yellowish brown (10YR 5/6) silty clay loam; weak medium subangular blocky structure; friable; common fine roots; common fine tubular pores; 2 percent faint clay films on all faces of peds; 1 percent fine distinct dark yellowish brown (10YR 4/4) masses of oxidized iron with sharp boundaries lining pores; 1 percent fine prominent grayish brown (10YR 5/2) iron depletions with clear boundaries in matrix; very strongly acid; gradual wavy boundary. (Thickness is 10 to 36 cm [4 to 14 in])

Bt--28 to 51 cm (11 to 20 in); yellowish brown (10YR 5/4) silty clay; weak fine and medium subangular blocky structure; firm; few fine roots; few fine tubular pores; 15 percent distinct clay films on all faces of peds; 3 percent medium prominent red (2.5YR 4/8) masses of oxidized iron with sharp boundaries in matrix; 5 percent medium prominent yellowish brown (10YR 5/8) masses of oxidized iron with sharp boundaries in matrix; 5 percent fine distinct grayish brown (10YR 5/2) iron depletions with clear boundaries in matrix; very strongly acid; gradual wavy boundary. (Thickness is 15 to 129 cm [6 to 51 in])

Btg--51 to 114 cm (20 to 45 in); light brownish gray (10YR 6/2) silty clay; moderate fine and medium subangular blocky structure; firm; few fine roots; few fine tubular pores; 15 percent distinct clay films on all faces of peds; 5 percent fine prominent yellowish brown (10YR 5/6) masses of oxidized iron with sharp boundaries in matrix; 20 percent fine prominent red (2.5YR 4/8) masses of oxidized iron with sharp boundaries in matrix; moderately acid; gradual wavy boundary. (Thickness is 15 to 107 cm [6 to 42 in])

BCtg--114 to 163 cm (45 to 64 in); light brownish gray (10YR 6/2) silty clay; weak coarse prismatic structure parting to weak medium subangular blocky; very firm; few fine roots; 5 percent faint clay films on all faces of peds; 12 percent medium prominent red (2.5YR 4/8) masses of oxidized iron with sharp boundaries in matrix; moderately acid; gradual wavy boundary. (Combined thickness of the BCtg and BCt horizons is 71 to 112 cm [28 to 44 in])

BCt--163 to 203 cm (64 to 80 in); red (2.5YR 4/8) clay; weak very coarse subangular blocky structure; very firm; few fine roots; 5 percent distinct clay films; 20 percent fine prominent strong brown (7.5YR 5/6) masses of oxidized iron with sharp boundaries in matrix; 8 percent fine prominent light brownish gray (10YR 6/2) iron depletions with clear boundaries in matrix surrounding redox concentrations; strongly acid.

TYPE LOCATION: about 6 miles southwest of Longville, LA; 1350 feet north and 2230 feet west of the southeast section corner, NW 1/4 SE 1/4 sec. 31, T. 5 S., R. 9 W.

USGS Topographic Quadrangle: Beauregard, LA
Latitude: 30 degrees, 34 minutes, 58.0 seconds N
Longitude: 93 degrees, 19 minutes, 37.0 seconds W

Decimal Degrees:
Latitude: 30.58277778 degrees
Longitude: -93.32694444 degrees
Datum: WGS84

UTM Easting: 468652.8 m
UTM Northing: 3383410.2 m
UTM Zone: 15N

RANGE IN CHARACTERISTICS:
Soil Moisture: An aquic soil moisture regime.
Mean annual soil temperature: 19.9 to 21.7 degrees C (68 to 71 degrees F)

Particle-size control section (weighted average)
Clay content: 35 to 55 percent

A or Ap horizon (where present):
Hue: 10YR
Value: 4 or 5
Chroma: 2 to 4
Texture: very fine sandy loam, loam, or silt loam
Redox concentrations: amount-0 to 8 percent; size-fine or medium; contrast-faint, distinct, or prominent; color-shades of brown; boundary-sharp; location-along root channels
Redox depletions: amount-0 to 2 percent; size-fine; contrast-faint; color-shades of gray; boundary-clear; location-in matrix surrounding redox concentrations
Reaction (pH): very strongly acid to moderately acid (4.5 to 6.0)

E horizon:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 2 to 4
Texture: very fine sandy loam, loam, or silt loam
Redox concentrations: amount-1 to 25 percent; size-fine or medium; contrast-faint, distinct, or prominent; color-shades of brown; boundary-sharp; location-along root channels
Redox depletions: amount-0 to 2 percent; size-fine; contrast-faint; color-shades of gray; boundary-clear; location-in matrix surrounding redox concentrations
Reaction (pH): very strongly acid to moderately acid (4.5 to 6.0)

BE or Bt/E horizon:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 4 to 8
Texture: silt loam or silty clay loam
Clay films: location-on all faces of peds; distinctness-distinct
Redox concentrations: amount-1 to 20 percent; size-fine or medium; contrast-faint, distinct, or prominent; color-shades of brown; boundary-sharp; location-pore linings
Redox depletions: amount-1 to 8 percent; size-fine; contrast-faint or distinct; color-shades of gray; boundary-clear; location-in matrix
Glossic material (E part): 0 to 5 percent
Reaction (pH): very strongly acid or strongly acid (4.5 to 6.0)

Bt horizon:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 3 to 6
Texture: silty clay loam, silty clay or clay
Clay films: location-on all faces of peds; distinctness-distinct
Redox concentrations: amount-8 to 35 percent; size-fine or medium; contrast- distinct or prominent; color-shades of red, yellow or brown; boundary-sharp; location-in matrix
Redox depletions: amount-0 to 10 percent; size-fine; contrast-faint to distinct; color-shades of gray; boundary-clear; location-in matrix
Glossic material (E part): 0 to 5 percent
Reaction (pH): very strongly acid to moderately acid (4.5 to 6.0)

Btg horizon:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 to 2
Texture: silt loam, silty clay loam, silty clay or clay
Clay films: location-on all faces of peds; distinctness-distinct
Redox concentrations: amount-8 to 35 percent; size-fine or medium; contrast-faint to prominent; color-shades of red, yellow or brown; boundary-clear; location-in matrix
Redox depletions: amount-0 to 10 percent; size-fine; contrast-faint or distinct; color-shades of gray; boundary-clear; location-in matrix
Reaction (pH): very strongly acid to moderately acid (4.5 to 6.0)

BCtg horizon:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 1 to 2
Texture: silt loam, silty clay loam, silty clay or clay
Clay films: location-on all faces of peds; distinctness-faint or distinct
Redox concentrations: amount-5 to 35 percent; size-fine or medium; contrast-distinct or prominent; color-shades of red, yellow or brown; boundary-sharp; location-in matrix
Redox depletions: amount-0 to 10 percent; size-fine; contrast-faint or distinct; color-shades of gray; boundary-clear; location-in matrix
Reaction (pH): very strongly acid to slightly alkaline (4.5 to 7.8)

BCt or 2BCt horizons (where present):
Hue: 2.5YR to 10YR
Value: 4 or 8
Chroma: 4 to 8
Texture: silt loam, silty clay loam, silty clay or clay
Clay films: locations-on ped faces; distinctness-distinct
Redox concentrations: amount-8 to 35 percent, size-fine or medium; contrast-distinct or prominent; color-shades of brown; boundary-sharp; location-in matrix
Redox depletions: amount-10 to 30 percent; size-fine; contrast-faint or distinct; color-shades of gray; boundary-clear; location-in matrix surrounding redox concentrations
Iron-manganese segregations: amount-0 to 12 percent; kind-masses
Reaction (pH): very strongly acid to slightly alkaline (4.5 to 7.8)

COMPETING SERIES: There are no series in the same family. Similar soils include the Acadiana (LA), Huntsburg, (TX), and Searcy (AL), Stigler (OK), and Tamaha (OK), and Texla (TX) series.

Acadiana and Texla soils: do not have aquic conditions in the upper 76 cm (30 in)
Tamaha soils: are moderately well drained
Huntsburg soils: moderately well drained and have a loamy fine sand surface texture
Searcy soils: greater amount of sand in the surface horizon, are moderately well drained, and have mixed mineralogy
Stigler soils: formed in loamy and clayey colluvium over interbedded shale and sandstone, and have mixed mineralogy

GEOGRAPHIC SETTING:
Parent material: late Pleistocene age loamy and clayey alluvium
Landscape: flat coastal plains
Landform: terraces
Slope: 0 to 5 percent, but dominantly 1 to 3 percent
Precipitation Pattern: mostly uniform throughout the year with slight peaks in the spring and fall months Mean annual precipitation: 1067 to 1651 mm (42 to 65 in)

Mean annual air temperature: 19.5 to 20.6 degrees C (67 to 69 degrees F)
Frost-free period: 200 to 300 days
Elevation: 4.6 to 55 m (15 to 180 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Crowley (LA), Gore (LA) Kolin (LA), Muskogee (OK), and Wrightsville (AR) series.
Crowley soils: are on broad areas on the adjacent coastal prairie and are gray thoughout
Gore soils: have redder colors in the upper part of the solum and occur on terrace risers
Kolin and Muskogee soils: have less than 35 percent clay in the control section and occur on terrace risers
Wrightsville soils: have intrusions of albic materials in the Bt horizon, have gray matrix colors throughout the sola, and occur on depressional areas on old stream terraces

DRAINAGE AND PERMEABILITY:
Drainage: somewhat poorly drained
Permeability: very slow
Runoff: high on slopes less than 1 percent, and very high runoff on slope greater than 1 percent
Seasonal water table: these soils are saturated to within 15 cm to 61 cm (0.5 to 2 ft) of the surface from December through April in normal years

USE AND VEGETATION:
Major uses: About half of the acreage is cleared and used for growing crops and pasture. Main crops are rice, soybeans, and sweet potatoes. The other half is in forest, part of which is grazed.
Ecological sites assigned to phases and components of this series are listed below. Current ecological site assignments are in Web Soil Survey. Components of this series include the following ecological sites: Seasonally Wet Loamy Upland

DISTRIBUTION AND EXTENT:

General location: Arkansas, Louisiana, Missouri, and Texas
Land Resource Region: T (Atlantic and Gulf Coast Lowland Forest and Crop Region)
Major Land Resource Area: 150A (Gulf Coast Prairies), 152B (Gulf Coast Saline Prairies), 133B (Southern Coastal Plains)
Extent: large

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Acadia Parish, Louisiana; 1903.

REMARKS:
The Acadia series type location was moved from Evangeline Parish to the current location during the Soil Data Join and Recorrelation (SDJR) initiative.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 28 cm (0 to 11 in) (A, E, BE horizons)
Argillic horizon: 28 to 203 cm (11 to 80 in) (Bt, Btg, BCtg1 and BCtg2 horizons)
Redox concentrations: 0 to 203 cm (0 to 80 in) (A, E, BE, Bt, Btg, BCtg, BCt horizons)
Redox depletions: 0 to 10 cm (0 to 4 in) and 15 to 51 cm (6 to 20 in) (A, BE, Bt horizons)
Aquic conditions: common iron depletions and gray matrix within 76 cm (30 in) of the surface due to wetness in normal years (Bt, Btg horizons)

Edited 01/2017 (JAD-MJB) Changed to tabular format. Updated pedon description, Range in Characteristics, and other sections.

ADDITIONAL DATA: LSU characterization data on pedon S87LA053002-2 (NASIS pedon P89LA0530001). The Acadia series was previously classified in mixed mineralogy family. Reclassification was based on laboratory data including mineralogy data from typifying pedon (sample no. 81-85) by Agricultural and Mechanical College of Texas. Lab data were also run by NSSL on pedon S90LA-011-016 but this pedon is a taxadjunct to the Acadia series.

TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014

National Cooperative Soil Survey
U.S.A.