IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: 88KS061178
  • User Pedon ID: 88KS061178
  • User Site Association ID: Kansas State University Laboratory Pedons
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSU
  • Lab Pedon # - 88KS061178
  • NCSS Pedon Lab Data NASIS Record ID - 40971
  • Print Date: 1/29/2025

    • 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: 38.8975334
  • Std. Longitude: -96.5402985
  • Datum: WGS84
  • Location Description: 720 ft. W, 200 ft. S of NE sec. 28-13-8.
  • Map Unit: Id—IRWIN SILTY CLAY LOAM, 3 TO 7 PERCENT SLOPES
  • State: Kansas
  • County: KS061—Geary
  • Non-MLRA Soil Survey Area: KS061—Geary County, Kansas

    • PEDON

  • Describers Name: H. Campbell
  • Current Taxonomic Class: Fine, mixed, mesic Pachic Argiustolls
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Irwin
  • Taxonomic Class - Fine, mixed, mesic Pachic Argiustolls
  • PSC - 28 to 78 cm.
  • Classificaton Date - 2/1/1988
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess derived from mixed and/or loess derived from mixed and/or residuum weathered from shale
  • Landscape: upland
  • Landform: hillside
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: footslope
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/1/1988 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    4

    —

    —

    444

    —

    270

    820

    —

    181

    11.8

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 18 centimeters (0.0 to 7.1 inches); very dark grayish brown (10YR 3/2), very dark brown (10YR 2/2) exterior, moist; silty clay loam; moderate fine granular structure; 7.0 fine roots throughout; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # KSUSS2852; moist when described;
    A2—18 to 28 centimeters (7.1 to 11.0 inches); very dark grayish brown (10YR 3/2), very dark brown (10YR 2/2) exterior, moist; silty clay loam; moderate fine subangular blocky structure; slightly hard, friable; 7.0 fine roots throughout; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # KSUSS2853; moist when described;
    Bt1—28 to 48 centimeters (11.0 to 18.9 inches); brown (10YR 4/3), dark brown (10YR 3/3) exterior, moist; silty clay; 1 percent reddish brown (5YR 4/4) fine prominent mottles; moderate medium subangular blocky structure; hard when dry, firm; 3.0 fine roots between peds; dark concretions; 1 percent fine spherical ; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # KSUSS2854; moist when described;. Dark stains peds.
    Bt2—48 to 74 centimeters (18.9 to 29.1 inches); brown (10YR 4/3), dark brown (10YR 3/3) exterior, moist; clay; 10 percent light yellowish brown (10YR 6/4) fine distinct mottles; strong medium subangular blocky structure; very hard, very firm; 1.0 fine roots between peds; dark concretions; 1 percent fine spherical ; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # KSUSS2855; moist when described;
    Bt3—74 to 99 centimeters (29.1 to 39.0 inches); brown (10YR 5/3), brown (10YR 4/3) exterior, moist; clay; 10 percent dark yellowish brown (10YR 4/4) medium faint mottles; weak medium subangular blocky structure; very hard, very firm; 1.0 fine roots between peds; dark concretions; 1 percent fine spherical ; fragments; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary. Lab sample # KSUSS2856; moist when described;
    BC—99 to 117 centimeters (39.0 to 46.1 inches); yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4) exterior, moist; silty clay; 10 percent strong brown (7.5YR 5/6) medium distinct mottles; hard when dry, firm; dark concretions; 1 percent fine spherical ; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # KSUSS2857; moist when described;
    2C—117 to 193 centimeters (46.1 to 76.0 inches); brown (7.5YR 5/4), brown (7.5YR 4/4) exterior, moist; silty clay; hard when dry, firm; dark concretions; 1 percent fine spherical ; fragments; moderately alkaline, pH 8.0, hellige-truog. Lab sample # KSUSS2858; moist when described;
    3Cr—193 to 200 centimeters (76.0 to 78.7 inches); weathered bedrock; fragments.