IDENTIFIERS

  • Current Taxon Name (Soil Name): Oktibbeha
  • OSD
  • Series Extent
  • User Site ID: S1988AL101001
  • User Pedon ID: 88AL101001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 88P0929
  • NCSS Pedon Lab Data NASIS Record ID - 61047
  • Print Date: 2/17/2025

    • LOCATION

  • Location In Web Soil Survey
  • AOI is roughly a square mile and pedon is marked in the center.
  • Location in SoilWeb
  • Location in Google Maps
  • Std. Latitude: 32.2330551
  • Std. Longitude: -86.0444412
  • Datum: WGS84
  • Township: 15N
  • Range: 20E
  • Section: 34
  • PLSS Details: 1,300 feet north and 1,000 feet east of the SW corner
  • Location Description: About 2.9 miles southwest of Mathews to Mt. Pleasant Church, 3.1 miles west on county road, about 75 feet south of center of road.
  • State: Alabama
  • County: AL101—Montgomery
  • MLRA: 135A—Alabama and Mississippi Blackland Prairie
  • Regional Office: 7—Auburn, AL

    • PEDON

  • Describers Name: Dewayne Williams, Ben Hajek, George Martin, Glenn
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Oktibbeha
  • Taxonomic Class - Very-fine, montmorillonitic Aquentic Chromuderts
  • Classificaton Date - 7/1/1988
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: strongly weathered, clayey marine deposits derived from chalk
  • Landscape: coastal plain
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: shoulder
  • Slope Position: upper third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: with 10 to <45
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1988 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    cambic horizon

    0—13

    13—46

    46—86

    —-

    —-

    —-
    Setting and Climate
    Slope Slope Length USLE Upslope Length Elev. Corr. Elev Aspect MAP REAP FFD MAAT MSAT MWAT MAST MSST MWST MFFP PE Index Climate Station ID Climate Station Name Climate Station Type
    % m degrees mm mm C mm

    4

    —

    —

    93

    —

    270

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 13 centimeters (0.0 to 5.1 inches); dark brown (7.5YR 3/2) clay loam; weak coarse and very coarse subangular blocky structure; firm, moderately sticky, moderately plastic; 5.5 fine and medium roots throughout; fragments; very strongly acid, pH 5.0, hellige-truog; abrupt smooth boundary. Lab sample # 88P05013; moist when described;. many fine and medium roots throughout
    Bt1—13 to 25 centimeters (5.1 to 9.8 inches); yellowish red (5YR 4/6) clay; 11 percent yellowish brown (10YR 5/4) fine and medium distinct mottles; moderate medium and coarse subangular blocky structure; firm, moderately sticky, moderately plastic; 2.5 fine and medium roots throughout; 37 percent distinct , moist, pressure faces on all faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 88P05014; moist when described;. The Bw1 (3-25cm) has characteristics of an argillic horizon; could be called a Bt1; common pressure faces surface features on vertical and horizontal faces of peds; common fine and medium roots throughout; common fine and medium distinct 10YR54 mottles; patchy - phpvsfiid 223594; patchy - phpvsfiid 223594
    Bt2—25 to 46 centimeters (9.8 to 18.1 inches); strong brown (7.5YR 5/6) clay; 11 percent pale brown (10YR 6/3) fine and medium distinct and 11 percent yellowish red (5YR 4/6) fine and medium distinct mottles; moderate medium subangular blocky structure; firm, moderately sticky, moderately plastic; 2.5 very fine and fine roots throughout and 0.5 medium roots throughout; 55 percent distinct , moist, pressure faces on all faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 88P05015; moist when described;. The Bw2 (25-46cm) has characteristics of an argillic horizon; could be called a Bt2; many pressure faces surface features on vertical and horizontal faces of peds; few medium roots throughout; common very fine and fine roots throughout; common fine and medium distinct 10YR63 mottles; common fine and medium distinct 5YR46 mottles; patchy - phpvsfiid 223595; patchy - phpvsfiid 223595
    Bw1—46 to 71 centimeters (18.1 to 28.0 inches); yellowish brown (10YR 5/6) and gray (10YR 6/1) and yellowish red (5YR 4/6) clay; moderate coarse and very coarse angular blocky structure; very firm, moderately sticky, moderately plastic; 2.5 very fine and fine roots throughout and 0.5 medium roots throughout; 37 percent distinct , moist, slickensides (pedogenic) and 55 percent distinct , moist, pressure faces on all faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 88P05016; moist when described;. Slickensides have thin striated surfaces; common intersecting slickensides surface features; many pressure faces surface features on vertical and horizontal faces of peds; few medium roots throughout; common very fine and fine roots throughout; patchy - phpvsfiid 223596; patchy - phpvsfiid 232804; patchy - phpvsfiid 223596; patchy - phpvsfiid 232804
    Bw2—71 to 81 centimeters (28.0 to 31.9 inches); yellowish brown (10YR 5/6) clay; 11 percent gray (10YR 6/1) fine and medium faint and 11 percent yellowish red (5YR 4/6) medium and coarse prominent mottles; moderate coarse and very coarse subangular blocky structure; very firm, moderately sticky, moderately plastic; 2.5 very fine and fine roots between peds and 0.5 medium roots throughout; 37 percent distinct , moist, slickensides (pedogenic); fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 88P05017; moist when described;. Slickenside surfaces are grooved and polished; common intersecting slickensides surface features; few medium roots throughout; common very fine and fine roots between peds; common fine and medium faint 10YR61 mottles; common medium and coarse prominent 5YR46 mottles; continuous - phpvsfiid 232805; continuous - phpvsfiid 232805
    Bw3—81 to 86 centimeters (31.9 to 33.9 inches); light olive brown (2.5Y 5/6) clay; 11 percent light brownish gray (2.5Y 6/2) fine faint and 11 percent light yellowish brown (2.5Y 6/4) fine and medium faint mottles; moderate coarse and very coarse angular blocky structure; very firm, moderately sticky, moderately plastic; 0.5 very fine and fine roots between peds; 37 percent distinct , moist, slickensides (pedogenic) and 37 percent prominent , moist, manganese or iron-manganese stains on all faces of peds; 11 percent spherical iron-manganese masses; fragments; slightly acid, pH 6.5, hellige-truog; abrupt wavy boundary. Lab sample # 88P05018; moist when described;. Slickensides have thick grooved and polished surfaces; common soft masses of iron-manganese concentrations; common intersecting slickensides surface features; common manganese or iron-manganese stains surface features on vertical and horizontal faces of peds; few very fine and fine roots between peds; common fine faint 2.5Y62 mottles; common fine and medium faint 2.5Y64 mottles; continuous - phpvsfiid 232806; patchy - phpvsfiid 232807; continuous - phpvsfiid 232806; patchy - phpvsfiid 232807
    2Bw4—86 to 142 centimeters (33.9 to 55.9 inches); light yellowish brown (2.5Y 6/4) interior and light brownish gray (2.5Y 6/2) exterior clay; 11 percent light olive brown (2.5Y 5/6) fine faint mottles; strong fine and medium angular blocky, and strong fine angular blocky structure; very firm, moderately sticky, moderately plastic; 0.5 very fine and fine roots between peds; 37 percent distinct , moist, pressure faces on all faces of peds; 11 percent medium and coarse spherical carbonate masses; fragments; moderately alkaline, pH 8.0, hellige-truog. Lab sample # 88P05019; moist when described;. common medium and coarse soft masses of carbonate concentrations; common pressure faces surface features on vertical and horizontal faces of peds; few very fine and fine roots between peds; common fine faint 2.5Y56 mottles; patchy - phpvsfiid 232808; patchy - phpvsfiid 232808