IDENTIFIERS

  • Current Taxon Name (Soil Name): Osco
  • OSD
  • Series Extent
  • User Site ID: 1981IL137046
  • User Pedon ID: 1981IL137046
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - IL SCL
  • Lab Pedon # - 81IL137046
  • NCSS Pedon Lab Data NASIS Record ID - 21299
  • Print Date: 2/17/2025

    • 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: 39.7007001
  • Std. Longitude: -90.2737032
  • Datum: WGS84
  • Township: 15N
  • Range: 11W
  • Section: 36
  • PLSS Details: about 260 feet south and 440 feet west of the section center
  • State: Illinois
  • County: IL137—Morgan
  • MLRA: 108—Illinois and Iowa Deep Loess and Drift
  • Non-MLRA Soil Survey Area: IL137—Morgan County, Illinois

    • PEDON

  • Describers Name: LL, KG
  • Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Typic Argiudolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: PedonPC
  • Pedon #: 46
  • Correlated Information:
  • Soil Name - Osco
  • PSC - 33 to 83 cm.
  • Classificaton Date - 6/8/2009
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Ipava
  • Classificaton Date - 9/1/1981
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess
  • Landscape: upland
  • Landform: knoll
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/12/1981 (entry creation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • 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

    0—33

    33—112

    —-

    —-
    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

    3.5

    —

    —

    —

    —

    980

    —

    190

    13

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silty clay loam; weak fine granular structure; friable; 3.0 fine roots between peds; fragments; slightly acid, pH 6.3; abrupt smooth boundary. Lab sample # IL28363
    A—20 to 33 centimeters (7.9 to 13.0 inches); dark brown (10YR 3/3), grayish brown (10YR 5/2), dry; silty clay loam; moderate fine subangular blocky parts to weak fine granular structure; friable; 0.6 medium roots between peds; faint very dark grayish brown (10YR 3/2) organoargillans on all faces of peds; fragments; slightly acid, pH 6.3; clear smooth boundary. Lab sample # IL28364
    Bt1—33 to 53 centimeters (13.0 to 20.9 inches); brown (10YR 4/3) silty clay loam; weak fine prismatic parts to moderate fine subangular blocky structure; firm; 0.6 fine roots between peds; distinct very dark grayish brown (10YR 3/2) organoargillans on all faces of peds and clay films on all faces of peds; 10 percent fine distinct iron-manganese concretions in matrix; fragments; slightly acid, pH 6.3; clear smooth boundary. Lab sample # IL28365, IL28366
    Bt2—53 to 69 centimeters (20.9 to 27.2 inches); brown (10YR 4/3) silty clay loam; weak fine prismatic parts to moderate medium subangular blocky structure; firm; 0.6 fine roots between peds; distinct very dark grayish brown (10YR 3/2) organoargillans on all faces of peds and clay films on all faces of peds; 10 percent fine prominent iron-manganese concretions in matrix and 10 percent fine distinct dark yellowish brown (10YR 4/6) masses of oxidized iron and 25 percent medium distinct pale brown (10YR 6/3) masses of oxidized iron; fragments; slightly acid, pH 6.3; clear smooth boundary. Lab sample # IL28367, IL28368
    Bt3—69 to 112 centimeters (27.2 to 44.1 inches); yellowish brown (10YR 5/4) silty clay loam; weak fine prismatic parts to weak medium subangular blocky structure; firm; 0.6 fine roots between peds; prominent very dark grayish brown (10YR 3/2) organoargillans on all faces of peds and distinct brown (10YR 4/3) clay films on all faces of peds; 10 percent fine prominent dark yellowish brown (10YR 4/6) iron-manganese concretions in matrix and 10 percent fine distinct masses of oxidized iron and 25 percent medium distinct pale brown (10YR 6/3) masses of oxidized iron; fragments; slightly acid, pH 6.3; clear smooth boundary. Lab sample # IL28369, IL28370
    Bt4—112 to 132 centimeters (44.1 to 52.0 inches); yellowish brown (10YR 5/4) silty clay loam; weak coarse subangular blocky structure; firm; 0.6 fine roots between peds; prominent very dark grayish brown (10YR 3/2) organoargillans on all faces of peds and distinct brown (10YR 4/3) clay films on all faces of peds; 10 percent fine distinct strong brown (7.5YR 5/8) masses of oxidized iron and 25 percent fine prominent iron-manganese concretions in matrix and 25 percent medium distinct brown (10YR 5/3) masses of oxidized iron; fragments; neutral, pH 7.0; clear smooth boundary.
    C—132 to 152 centimeters (52.0 to 59.8 inches); grayish brown (10YR 5/2) silt loam; massive; friable; 1 percent medium distinct strong brown (7.5YR 5/8) masses of oxidized iron and 10 percent fine prominent iron-manganese concretions in matrix and 10 percent distinct light olive brown (2.5Y 5/6), moist, masses of oxidized iron in matrix; fragments; slightly alkaline, pH 7.6.