IDENTIFIERS

  • Current Taxon Name (Soil Name): Stohman
  • OSD
  • Series Extent
  • User Site ID: S2012TX501001
  • User Pedon ID: S2012TX501001
  • Vegetation Plot ID: S12TX501001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 12N7776
  • NCSS Pedon Lab Data NASIS Record ID - 55262
  • Print Date: 4/27/2025

    • 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: 33.2271843
  • Std. Longitude: -102.9467621
  • Datum: WGS84
  • State: Texas
  • County: TX501—Yoakum
  • MLRA: 77C—Southern High Plains, Southern Part
  • 7.5 Minute USGS Quad: 33102-B8—Plains NW, Texas

    • PEDON

  • Describers Name: 77 Staff
  • Current Taxonomic Class: Loamy, mixed, superactive, thermic, shallow Petrocalcic Calciustepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Correlated Information:
  • Soil Name - Stohman
  • PSC - 25 to 38 cm.
  • Classificaton Date - 3/21/2012
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Lea
  • Classificaton Date - 11/15/2011
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 2


    • SITE

  • Parent Material: calcareous loamy eolian deposits
  • Landscape: plateau
  • Landform: plain
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: well
  • Geology: Ogallala formation.
  • Surface Fragments: 10.00 percent nonflat subrounded indurated 2- to 75-millimeter petrocalcic fragments,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/15/2011 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    BOCU

    PRGLT

    SORO

    SPCR

    YUCCA

    Bouteloua curtipendula

    Prosopis glandulosa var. torreyana

    Solanum rostratum

    Sporobolus cryptandrus

    Yucca

    sideoats grama

    western honey mesquite

    buffalobur nightshade

    sand dropseed

    yucca

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    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    petrocalcic

    indurated

    38 - 100

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    calcic horizon

    petrocalcic horizon

    0—20

    20—38

    38—100

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    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

    1.5

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    1150

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    A—0 to 10 centimeters (0.0 to 3.9 inches); brown (7.5YR 5/4), brown (7.5YR 4/3), moist; fine sandy loam; 17 percent clay; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 1.0 very fine roots throughout and 5.0 medium roots throughout; 2 percent fine distinct spherical strongly coherent cemented carbonate nodules with clear boundaries in matrix; 4 percent by volume nonflat subrounded indurated 2-50-75 millimeter petrocalcic fragments fragments; strong effervescence; clear smooth boundary.
    Bw—10 to 20 centimeters (3.9 to 7.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; sandy clay loam; 22 percent clay; moderate medium subangular blocky structure; slightly hard, firm, moderately sticky, moderately plastic; 2.0 very fine roots throughout and 4.0 medium roots throughout; 2 percent fine distinct spherical strongly coherent cemented carbonate nodules with clear boundaries in matrix; 4 percent by volume nonflat subrounded indurated 2-50-75 millimeter petrocalcic fragments fragments; strong effervescence; clear wavy boundary.
    Bk—20 to 38 centimeters (7.9 to 15.0 inches); pale brown (10YR 6/3), brown (10YR 5/3), moist; loam; 23 percent clay; moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; 4.0 very fine roots throughout and 10.0 fine roots throughout; 20 percent carbonate, finely disseminated throughout and 10 percent fine spherical strongly coherent cemented carbonate nodules in matrix and 5 percent medium distinct irregular noncoherent cemented carbonate masses with clear boundaries in matrix; 3 percent by volume nonflat subrounded indurated 2-20-75 millimeter petrocalcic fragments fragments; violent effervescence; abrupt wavy boundary.
    Bkkm1—38 to 71 centimeters (15.0 to 28.0 inches); white (10YR 9.5/1), white (10YR 9.5/1), moist; cemented material; structureless massive; carbonates present; fragments; violent effervescence; gradual wavy boundary.
    Bkkm2—71 to 100 centimeters (28.0 to 39.4 inches); 85 percent pale pinkish white (7.5YR 9/2) and 15 percent pink (5YR 7/3), 85 percent pale pinkish white (7.5YR 9/2) and 15 percent pink (5YR 7/3), moist; cemented material; structureless massive; carbonates present; fragments; violent effervescence.