IDENTIFIERS

  • Current Taxon Name (Soil Name): Wolco
  • OSD
  • Series Extent
  • User Site ID: S2004OK117002
  • User Pedon ID: S2004OK117002
  • Vegetation Plot ID: S2004OK117002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 05N0387
  • NCSS Pedon Lab Data NASIS Record ID - 17109
  • 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: 36.1834717
  • Std. Longitude: -96.7812195
  • Datum: WGS84
  • Township: 20N
  • Range: 5E
  • Section: 28
  • PLSS Details: about 1700 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 #: 2
  • 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 - 9/8/2004
  • 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 109cm
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/8/2004 (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

    107 -

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

    natric horizon

    8—53

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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

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    180

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    Ap—0 to 8 centimeters (0.0 to 3.1 inches); dark gray (10YR 4/1) crushed, very dark gray (10YR 3/1) crushed, moist; silt loam; moderate very fine subangular blocky structure; hard, very firm; 7.0 very fine roots throughout and 6.0 medium roots throughout; 7.0 very fine dendritic tubular and 6.0 medium dendritic tubular pores; fragments; noneffervescent, by hcl, unspecified; neutral, pH 7.0, hellige-truog; clear smooth boundary.; observed in shovel slice
    Btn1—8 to 36 centimeters (3.1 to 14.2 inches); dark grayish brown (10YR 4/2) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silty clay; strong medium columnar parts to moderate medium subangular blocky structure; hard, very firm; 6.0 very fine roots throughout and 3.0 fine roots throughout; 1.0 very fine dendritic tubular and 1.0 fine dendritic tubular pores; 35 percent prominent clay films on all faces of peds and 90 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; gradual smooth boundary. Lab sample # 05N02162; observed in shovel slice. discontinuous - phpvsfiid 278759; continuous - phpvsfiid 278758; discontinuous - phpvsfiid 278759; continuous - phpvsfiid 278758
    Btn2—36 to 53 centimeters (14.2 to 20.9 inches); grayish brown (10YR 5/2) broken face, dark grayish brown (10YR 4/2) broken face, moist; silty clay; moderate medium subangular blocky parts to strong medium prismatic structure; hard, very firm; 6.0 very fine roots throughout and 1.0 fine roots throughout; 1.0 very fine dendritic tubular and 1.0 fine dendritic tubular pores; 80 percent prominent very dark gray (10YR 3/1), moist, clay films on all faces of peds and 90 percent prominent very dark gray (10YR 3/1), moist, organic stains 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; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary. Lab sample # 05N02163; observed in push tube. continuous - phpvsfiid 278760; continuous - phpvsfiid 278761; continuous - phpvsfiid 278760; continuous - phpvsfiid 278761
    Bt1—53 to 94 centimeters (20.9 to 37.0 inches); grayish brown (2.5Y 5/2) broken face, dark grayish brown (10YR 4/2) broken face, moist; silty clay; strong medium subangular blocky structure; hard, very firm; 4.0 very fine roots throughout and 1.0 fine roots throughout; 3.0 very fine dendritic tubular and 3.0 fine dendritic tubular pores; 80 percent prominent clay films on all faces of peds; 5 percent medium prominent spherical strongly coherent cemented white (10YR 8/1), dry, carbonate nodules with sharp boundaries in matrix; 1 percent by volume flat well rounded moderately coherent cemented 2-3-10 millimeter siltstone, unspecified fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary.; observed in push tube. continuous - phpvsfiid 278762; continuous - phpvsfiid 278762
    Btk—94 to 107 centimeters (37.0 to 42.1 inches); pale yellow (2.5Y 7/4) broken face, light yellowish brown (2.5Y 6/4) broken face, moist; silty clay loam; moderate medium subangular blocky structure; slightly hard, firm; 0.5 very fine roots throughout; 6.0 very fine dendritic tubular and 3.0 fine dendritic tubular pores; 95 percent prominent clay films on all faces of peds; 3 percent medium prominent spherical moderately coherent cemented reddish black (10R 2.5/1) iron-manganese concretions with sharp boundaries in matrix and 5 percent prominent spherical noncoherent cemented iron-manganese masses with clear boundaries in matrix; 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. continuous - phpvsfiid 278763; continuous - phpvsfiid 278763
    R—107 centimeters (42.1 inches); fragments.; observed in push tube