IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: S2005KS061001
  • User Pedon ID: S2005KS061001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 05N0660
  • NCSS Pedon Lab Data NASIS Record ID - 17402
  • 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: 38.8858337
  • Std. Longitude: -96.8261108
  • Datum: WGS84
  • Township: 13S
  • Range: 5E
  • Section: 25
  • PLSS Details: 2380 feet east and 500 feet north of the southwest corner
  • Location Description: About 8 miles south and 1 mile east of Junction City, Kansas.
  • Map Unit: Id—IRWIN SILTY CLAY LOAM, 3 TO 7 PERCENT SLOPES4673—Irwin silty clay loam, 3 to 7 percent slopes
  • State: Kansas
  • County: KS061—Geary
  • MLRA: 76—Bluestem Hills
  • Non-MLRA Soil Survey Area: KS061—Geary County, Kansas
  • 7.5 Minute USGS Quad: 38096-H7—Wreford, Kansas

    • PEDON

  • Describers Name: P. Abel, J. McDowell, T. Robertson, C. Watts, J. Warner, C. Remley, W. Wehmueller, D. Presley
  • Current Taxonomic Class: Fine, mixed, superactive, mesic Pachic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Irwin
  • PSC - 30 to 80 cm.
  • Classificaton Date - 4/11/2006
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Irwin
  • Classificaton Date - 4/14/2005
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess derived from mixed over pedisediment derived from mixed over residuum weathered from calcareous shale
  • Landscape: upland
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Chase group .
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/14/2005 (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
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    slickensides

    secondary carbonates

    0—58

    30—175

    58—79

    79—124

    —58—

    —145—

    —21—

    —45—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    4/14/2005

    50

    —

    16
    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

    3

    —

    —

    408

    —

    10

    820

    —

    181

    11.8

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 10 centimeters (0.0 to 3.9 inches);, black (10YR 2/1), moist; silt loam; 28 percent clay; moderate fine and medium granular structure; slightly hard, friable, slightly sticky, slightly plastic; 10.0 fine and medium roots throughout; fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # 05N03581; observed in trench
    A2—10 to 30 centimeters (3.9 to 11.8 inches);, very dark gray (10YR 3/1), moist; silty clay loam; 30 percent clay; moderate fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 6.0 fine roots throughout; fragments; noneffervescent, by hcl, 1n; abrupt smooth boundary. Lab sample # 05N03582; observed in trench
    Bt1—30 to 58 centimeters (11.8 to 22.8 inches);, very dark brown (10YR 2/2) and very dark grayish brown (10YR 3/2) crushed, moist; silty clay; 50 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 5.0 very fine and fine roots throughout; 2 percent distinct organic stains on faces of peds and 15 percent faint very dark grayish brown (10YR 3/2), moist, clay films on faces of peds; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary. Lab sample # 05N03583; observed in trench. discontinuous - phpvsfiid 322558; continuous - phpvsfiid 322557; discontinuous - phpvsfiid 322558; continuous - phpvsfiid 322557
    Bt2—58 to 79 centimeters (22.8 to 31.1 inches);, brown (10YR 4/3), moist; silty clay; 46 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 5.0 very fine roots between peds; 5 percent distinct slickensides (pedogenic) and 30 percent distinct very dark grayish brown (10YR 3/2), moist, clay films on faces of peds; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary. Lab sample # 05N03584; observed in trench. continuous - phpvsfiid 322559; continuous - phpvsfiid 322559
    Btk1—79 to 107 centimeters (31.1 to 42.1 inches);, dark yellowish brown (10YR 4/4), moist; silty clay; 41 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 1.0 very fine roots throughout; 35 percent faint dark brown (10YR 3/3), moist, clay films on faces of peds; 3 percent coarse spherical weakly coherent cemented carbonate masses with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary. Lab sample # 05N03585; observed in trench. discontinuous - phpvsfiid 322561; discontinuous - phpvsfiid 322561
    Btk2—107 to 124 centimeters (42.1 to 48.8 inches);, dark yellowish brown (10YR 4/4), moist; silty clay; 40 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 1.0 fine roots throughout; 15 percent faint dark brown (10YR 3/3), moist, clay films on faces of peds; 3 percent coarse spherical weakly coherent cemented carbonate masses with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary. Lab sample # 05N03586; observed in trench. discontinuous - phpvsfiid 322562; discontinuous - phpvsfiid 322562
    2Bt3—124 to 155 centimeters (48.8 to 61.0 inches);, dark brown (7.5YR 3/4), moist; silty clay loam; 38 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 1.0 fine roots throughout; 25 percent distinct dark brown (7.5YR 3/3), moist, clay films on faces of peds; 2 percent fine distinct spherical moderately coherent cemented black (10YR 2/1), moist, manganese masses with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; clear wavy boundary. Lab sample # 05N03587; observed in trench. discontinuous - phpvsfiid 322563; discontinuous - phpvsfiid 322563
    2Bt4—155 to 175 centimeters (61.0 to 68.9 inches);, 70 percent brown (7.5YR 4/4) and 30 percent dark grayish brown (10YR 4/2), moist; silty clay loam; 38 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 1.0 fine roots throughout; 15 percent distinct dark brown (7.5YR 3/3), moist, clay films on faces of peds; 2 percent fine distinct spherical moderately coherent cemented black (10YR 2/1), moist, manganese masses with clear boundaries in matrix and 10 percent fine and medium distinct irregular very weakly coherent cemented strong brown (7.5YR 5/6), moist, and strong brown (7.5YR 4/6), moist, masses of oxidized iron with diffuse boundaries infused into matrix along faces of peds; 1 percent by volume nonflat subangular weakly coherent cemented 2-?-20 millimeter shale, noncalcareous fragments; noneffervescent, by hcl, 1n; abrupt smooth boundary. Lab sample # 05N03588; observed in trench. discontinuous - phpvsfiid 322564; discontinuous - phpvsfiid 322564
    3C—175 to 213 centimeters (68.9 to 83.9 inches);, 80 percent light gray (10YR 7/2) and 20 percent brownish yellow (10YR 6/6), moist; silt loam; 27 percent clay; slightly hard, firm, slightly sticky, slightly plastic; fragments; strong effervescence, by hcl, 1n. Lab sample # 05N03589; observed in trench