IDENTIFIERS

  • Current Taxon Name (Soil Name): Steff
  • OSD
  • Series Extent
  • User Site ID: 07KY047002
  • User Pedon ID: 07KY047002
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - UK
  • Lab Pedon # - 07KY-047-002
  • NCSS Pedon Lab Data NASIS Record ID - 46376
  • Print Date: 11/23/2024

    • 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: 37.1100006
  • Std. Longitude: -87.6230011
  • Datum: WGS84
  • Map Unit: Ss—Steff silt loam, 0 to 2 percent slopes, occasionally flooded
  • Country: US—United States
  • State: Kentucky
  • County: KY047—Christian
  • MLRA: 120A—Kentucky and Indiana Sandstone and Shale Hills and Valleys, Southern Part
  • MLRA Soil Survey Area: NE-OWN—Owensboro, Kentucky
  • Non-MLRA Soil Survey Area: KY047—Christian County, Kentucky
  • 7.5 Minute USGS Quad: 37087-A5—Dawson Springs SE, Kentucky

    • PEDON

  • Describers Name: Ken Scott
  • Current Taxonomic Class: Fine-silty, mixed, active, mesic Fluvaquentic Dystrudepts
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: PedonPC
  • Correlated Information:
  • Soil Name - Steff
  • PSC - 25 to 100 cm.
  • Classificaton Date - 4/13/2012
  • Classifier - Matt McCauley
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Steff
  • Taxonomic Class - Fine-silty, mixed, active, mesic Fluvaquentic Dystrudepts
  • Taxon Kind - series
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/10/2007
  • Classifier - Ken Scott
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture SUBClass - aquic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: fine-silty alluvium
  • Landscape: river valley
  • Landform: flood plain
  • Drainage Class: moderately well
  • Flooding: occasional flooding for brief periods begining in dec
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/10/2007 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - other grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    redox concentrations

    redox depletions with chroma 2 or less

    0—20

    20—107

    48—185

    48—185

    —20—

    —87—

    —137—

    —137—
    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

    —

    —

    125

    —

    270

    1306

    —

    191

    13.6

    —

    —

    —

    —

    —

    —

    —

    KY3994

    Hopkinsville

    coop
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); brown (10YR 4/3) silt loam; weak fine granular structure; very friable; fragments; moderately acid, pH 6.0; abrupt smooth boundary. Lab sample # KY0234; moist when described;
    Bw1—20 to 48 centimeters (7.9 to 18.9 inches); dark yellowish brown (10YR 4/4) silt loam; weak medium subangular blocky structure; very friable; 5 percent medium faint irregular weakly coherent cemented brown (10YR 5/3), moist, iron depletions with diffuse boundaries in matrix; fragments; strongly acid, pH 5.5; clear smooth boundary. Lab sample # KY0235; moist when described;
    Bw2—48 to 76 centimeters (18.9 to 29.9 inches); yellowish brown (10YR 5/4) silt loam; weak medium subangular blocky structure; very friable; 5 percent medium distinct irregular weakly coherent cemented grayish brown (10YR 5/2), moist, iron depletions with diffuse boundaries in matrix and 5 percent coarse faint irregular weakly coherent cemented dark yellowish brown (10YR 4/4), moist, masses of oxidized iron with diffuse boundaries in matrix and 5 percent fine prominent spherical strongly coherent cemented black (10YR 2/1), moist, iron-manganese masses with sharp boundaries in matrix; fragments; strongly acid, pH 5.5; clear smooth boundary. Lab sample # KY0236; moist when described;
    Bw3—76 to 107 centimeters (29.9 to 42.1 inches); yellowish brown (10YR 5/4) silt loam; weak medium subangular blocky structure; very friable; 1 percent fine prominent irregular weakly coherent cemented reddish yellow (7.5YR 6/8), moist, masses of oxidized iron with diffuse boundaries in matrix and 5 percent medium distinct irregular weakly coherent cemented grayish brown (10YR 5/2), moist, iron depletions with diffuse boundaries in matrix and 5 percent coarse distinct irregular weakly coherent cemented brown (7.5YR 4/4), moist, masses of oxidized iron with diffuse boundaries in matrix; fragments; strongly acid, pH 5.5; clear smooth boundary. Lab sample # KY0237; moist when described;
    C—107 to 185 centimeters (42.1 to 72.8 inches); brown (10YR 5/3) silt loam; structureless massive; very friable; 5 percent medium prominent black (10YR 2/1), moist, iron-manganese masses with clear boundaries in matrix and 10 percent medium faint grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix and 10 percent medium distinct brownish yellow (10YR 6/6), moist, masses of oxidized iron with clear boundaries in matrix and 10 percent medium faint dark yellowish brown (10YR 4/4), moist, masses of oxidized iron with clear boundaries in matrix; fragments; very strongly acid, pH 5.0. Lab sample # KY0238; moist when described;