IDENTIFIERS

  • Current Taxon Name (Soil Name): Wolco
  • OSD
  • Series Extent
  • User Site ID: S2004OK117001
  • User Pedon ID: S2004OK117001
  • Vegetation Plot ID: S2004OK117001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 05N0386
  • NCSS Pedon Lab Data NASIS Record ID - 17108
  • Print Date: 4/28/2025

    • 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: 36.1843872
  • Std. Longitude: -96.7813644
  • Datum: WGS84
  • Township: 20N
  • Range: 5E
  • Section: 28
  • PLSS Details: about 1500 feet S and 1000 feet E of the NW corner
  • Country: US—United States
  • State: Oklahoma
  • County: OK117—Pawnee
  • MLRA: 76—Bluestem Hills
  • Non-MLRA Soil Survey Area: OK117—Pawnee County, Oklahoma

    • PEDON

  • Describers Name: Boyett
  • Current Taxonomic Class: Fine, mixed, active, thermic Pachic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Wolco
  • Classificaton Date - 6/15/2007
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Dwight like
  • Classificaton Date - 9/1/2004
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey residuum weathered from shale
  • Landscape: hills
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: indurated limestone, unspecified at 142cm
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/2004 (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

    AMPS

    BOLAT

    SONU2

    ERSP

    ANGE

    Ambrosia psilostachya

    Bothriochloa laguroides ssp. torreyana

    Sorghastrum nutans

    Eragrostis spectabilis

    Andropogon gerardii

    Cuman ragweed

    silver beardgrass

    Indiangrass

    purple lovegrass

    big bluestem

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

    bedrock, lithic

    indurated

    142 -

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

    natric horizon

    15—31

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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

    2

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    180

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    Ap—0 to 15 centimeters (0.0 to 5.9 inches); gray (10YR 6/1) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silt loam; moderate fine subangular blocky structure; hard, very firm; 3.0 very fine roots throughout and 0.5 fine roots throughout; 10.0 very fine dendritic tubular and 3.0 fine dendritic tubular pores; fragments; noneffervescent, by hcl, unspecified; moderately acid, pH 6.0, hellige-truog; clear smooth boundary.; observed in shovel slice
    Btn—15 to 30 centimeters (5.9 to 11.8 inches); dark brown (7.5YR 3/2) crushed, very dark gray (7.5YR 3/1) crushed, moist; silty clay loam; strong medium columnar structure; hard, very firm; 2.0 very fine roots throughout and 0.5 fine roots throughout; 2.0 very fine dendritic tubular pores; 35 percent prominent clay films on all faces of peds and 95 percent prominent very dark gray (10YR 3/1), moist, organic stains on all faces of peds; fragments; noneffervescent, by hcl, unspecified; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # 05N02161; observed in shovel slice. continuous - phpvsfiid 278748; discontinuous - phpvsfiid 278749; continuous - phpvsfiid 278748; discontinuous - phpvsfiid 278749
    Bt1—30 to 91 centimeters (11.8 to 35.8 inches); brown (10YR 5/3) broken face, dark grayish brown (10YR 4/2) broken face, moist; silty clay; strong medium subangular blocky structure; hard, very firm; 0.5 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine dendritic tubular pores; 70 percent prominent clay films on all faces of peds; 1 percent fine prominent spherical moderately coherent cemented reddish black (10R 2.5/1) iron-manganese concretions with sharp boundaries in matrix; fragments; slight effervescence, by hcl, unspecified; slightly alkaline, pH 7.5, hellige-truog; clear smooth boundary.; observed in push tube. continuous - phpvsfiid 278750; continuous - phpvsfiid 278750
    Btk2—91 to 130 centimeters (35.8 to 51.2 inches); grayish brown (10YR 5/2) broken face, dark grayish brown (10YR 4/2) broken face, moist; silty clay; strong medium subangular blocky structure; hard, very firm; 0.5 very fine roots throughout; 3.0 very fine dendritic tubular pores; 80 percent prominent clay films on all faces of peds; 1 percent fine prominent spherical moderately coherent cemented reddish black (10R 2.5/1) iron-manganese concretions with sharp boundaries in matrix; 20 percent coarse prominent spherical noncoherent cemented white (10YR 8/1), dry, carbonate masses with clear boundaries at top of horizon and 5 percent fine prominent spherical strongly coherent cemented white (10YR 8/1), dry, carbonate nodules with sharp boundaries at top of horizon and 1 percent medium prominent moderately coherent cemented gypsum crystals, unspecified with sharp boundaries in matrix; 1 percent by volume flat well rounded moderately coherent cemented 2-3-10 millimeter siltstone, unspecified fragments; violent effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary.; observed in push tube. continuous - phpvsfiid 278751; continuous - phpvsfiid 278751
    BCk—130 to 142 centimeters (51.2 to 55.9 inches); light gray (2.5Y 7/1) broken face, gray (2.5Y 6/1) broken face, moist; silty clay loam; moderate fine subangular blocky structure; hard, very firm; 0.5 very fine roots in cracks; 3.0 very fine dendritic tubular pores; 1 percent medium prominent spherical moderately coherent cemented reddish black (10R 2.5/1) iron-manganese concretions with sharp boundaries in matrix; 20 percent coarse prominent spherical noncoherent cemented white (10YR 8/1), dry, carbonate masses with clear boundaries in matrix and 10 percent medium prominent spherical strongly coherent cemented white (10YR 8/1), dry, carbonate nodules with sharp boundaries in matrix; fragments; violent effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary.; observed in push tube
    R—142 centimeters (55.9 inches); fragments.; observed in push tube