IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: S1986KS115001
  • User Pedon ID: 86KS115001
  • Vegetation Plot ID: S1986KS115001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 87P0022
  • NCSS Pedon Lab Data NASIS Record ID - 59318
  • Print Date: 2/16/2025

    • 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: 38.2611122
  • Std. Longitude: -97.1491699
  • Datum: WGS84
  • Township: 20S
  • Range: 3E
  • Section: 31
  • PLSS Details: 85 feet N and 275 feet E of the SW corner of the SW quarter
  • State: Kansas
  • County: KS115—Marion
  • MLRA: 75—Central Loess Plains

    • PEDON

  • Describers Name: D. Swanson
  • Current Taxonomic Class: Fine, mixed, mesic Pachic Argiustolls
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Irwin
  • PSC - 23 to 73 cm.
  • Classificaton Date - 1/11/2010
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Irwin
  • Taxonomic Class - Fine, mixed, mesic Pachic Argiustoll
  • Taxon Kind - series
  • Classificaton Date - 10/1/1986
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: upland slope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Shape Down: convex
  • Drainage Class: moderately well
  • Flooding: frequent flooding
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/1/1986 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    TRITI

    Triticum

    wheat

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    —

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

    mollic epipedon

    argillic horizon

    0—104

    23—104

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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

    —

    —

    436

    —

    270

    —

    —

    —

    13

    —

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    —

    —

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    —

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    —
    1Ap—0 to 15 centimeters (0.0 to 5.9 inches); dark gray (10YR 4/1) interior, very dark gray (10YR 3/1) interior, moist; silty clay loam; 35 percent clay; moderate medium granular structure; slightly hard, friable; 2.5 fine roots throughout; fragments; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # 87P00113. common fine roots throughout
    1A—15 to 23 centimeters (5.9 to 9.1 inches); dark grayish brown (10YR 4/2) interior, very dark grayish brown (10YR 3/2) interior, moist; silty clay loam; 35 percent clay; moderate medium granular structure; hard, friable; 2.5 fine roots throughout; fragments; slightly acid, pH 6.3, hellige-truog; clear smooth boundary. Lab sample # 87P00113. common fine roots throughout
    1Bt1—23 to 58 centimeters (9.1 to 22.8 inches); dark grayish brown (10YR 4/2) interior, very dark grayish brown (10YR 3/2) interior, moist; silty clay; 50 percent clay; moderate medium angular blocky structure; very hard, very firm; 0.5 fine roots throughout; fragments; slightly alkaline, pH 7.7, hellige-truog; gradual smooth boundary. Lab sample # 87P00114. few fine roots throughout
    1Bt2—58 to 104 centimeters (22.8 to 40.9 inches); brown (10YR 4/3) interior, dark brown (10YR 3/3) interior, moist; silty clay; 50 percent clay; moderate medium angular blocky structure; very hard, very firm; 0.5 fine roots throughout; fragments; moderately alkaline, pH 7.9, hellige-truog; gradual smooth boundary. Lab sample # 87P00115. few fine roots throughout
    1BC—104 to 135 centimeters (40.9 to 53.1 inches); grayish brown (10YR 5/2) interior, dark grayish brown (10YR 4/2) interior, moist; silty clay; 52 percent clay; 11 percent dark yellowish brown (10YR 4/4) fine faint mottles; weak medium angular blocky structure; very hard, very firm; 0.5 fine roots throughout; 1 percent spherical carbonate concretions; fragments; moderately alkaline, pH 7.9, hellige-truog; gradual smooth boundary. Lab sample # 87P00116. few lime concretions concentrations; few fine roots throughout; common fine faint 10YR44 mottles
    1C—135 to 152 centimeters (53.1 to 59.8 inches); brown (10YR 5/3) interior, brown (10YR 4/3) interior, moist; silty clay; 48 percent clay; 11 percent yellowish brown (10YR 5/6) fine distinct and 11 percent grayish brown (10YR 5/2) fine distinct mottles; massive; very hard, very firm; fragments; moderately alkaline, pH 7.9, hellige-truog. Lab sample # 87P00117. common fine distinct 10YR56 mottles; common fine distinct 10YR52 mottles