IDENTIFIERS

  • Current Taxon Name (Soil Name): Iva
  • OSD
  • Series Extent
  • User Site ID: 93IL163002
  • User Pedon ID: 93IL163002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Print Date: 12/5/2025

    • LOCATION

  • Location Description: 140'E & 1,500'S of the NW corner of Section 18 T.1N. - R.7W. NW1/4, NW1/4, SW1/4,NW1/4(160) SEC 18
  • State: Illinois
  • MLRA: 114—Southern Illinois and Indiana Thin Loess and Till Plain

    • PEDON

  • Describers Name: wmm cll
  • Current Taxonomic Class: Fine, montmorillonitic Typic Argiaquolls
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Iva
  • Taxonomic Class - Fine, montmorillonitic Typic Argiaquolls
  • Classificaton Date - 7/15/1993
  • Moisture Class - aquic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: ground moraine
  • Slope Position: depression
  • Runoff: negligible
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/15/1993 (actual site observation date)
  • Air Photo ID: 63
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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

    0

    —

    —

    160

    —

    965

    —

    —

    13.3

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 30 centimeters (0.0 to 11.8 inches); very dark gray (10YR 3/1), dark gray (10YR 4/1), dry; 25 percent clay; moderate medium granular structure; friable; 5.0 fine and medium roots throughout; 55.0 very fine and fine high-continuity vesicular and tubular pores; 2 percent fine spherical iron-manganese masses; fragments; neutral, pH 7.3, hellige-truog; clear smooth boundary.
    Bt1—30 to 48 centimeters (11.8 to 18.9 inches); black (10YR 2/1), very dark gray (10YR 3/1), dry; 35 percent clay; 3 percent brown (10YR 5/3) fine distinct mottles; moderate medium prismatic parts to moderate medium subangular blocky structure; firm; 5.0 fine and medium roots throughout; 53.0 fine and medium high-continuity vesicular and tubular pores; 51 percent distinct black (10YR 2/1) clay films on faces of peds and in pores and 51 percent distinct black (10YR 2/1) organic stains on faces of peds and in pores; 4 percent fine spherical iron-manganese masses; fragments; neutral, pH 7.2, hellige-truog; abrupt smooth boundary. continuous - phpvsfiid 86685; continuous - phpvsfiid 86686; continuous - phpvsfiid 86685; continuous - phpvsfiid 86686
    Bt2—48 to 61 centimeters (18.9 to 24.0 inches); yellowish brown (10YR 5/6); 42 percent clay; 5 percent brown (10YR 5/3) fine distinct mottles; strong medium prismatic parts to strong medium angular blocky structure; firm; 2.0 very fine roots between peds; 50.0 very fine and fine moderate-continuity vesicular and tubular pores; 55 percent distinct black (10YR 2/1) clay films on faces of peds and in pores and 55 percent distinct black (10YR 2/1) organic stains on faces of peds and in pores; 3 percent fine and medium irregular iron-manganese concretions and 5 percent fine and medium spherical iron-manganese masses; fragments; neutral, pH 7.2, hellige-truog; clear smooth boundary. continuous - phpvsfiid 86687; continuous - phpvsfiid 86688; continuous - phpvsfiid 86687; continuous - phpvsfiid 86688
    Btg1—61 to 86 centimeters (24.0 to 33.9 inches); dark grayish brown (10YR 4/2); 44 percent clay; 12 percent yellowish brown (10YR 5/6) fine and medium prominent mottles; strong medium prismatic parts to strong medium angular blocky structure; firm; 2.0 very fine roots between peds; 48.0 very fine and fine moderate-continuity vesicular and tubular pores; 51 percent distinct black (10YR 2/1) clay films on faces of peds and in pores and 51 percent distinct black (10YR 2/1) organic stains on faces of peds and in pores; 2 percent fine spherical iron-manganese masses and 6 percent fine and medium irregular iron-manganese concretions; fragments; neutral, pH 7.0, hellige-truog; clear smooth boundary. continuous - phpvsfiid 86689; continuous - phpvsfiid 86690; continuous - phpvsfiid 86689; continuous - phpvsfiid 86690
    Btg2—86 to 107 centimeters (33.9 to 42.1 inches); grayish brown (10YR 5/2); 36 percent clay; 15 percent yellowish brown (10YR 5/8) fine and medium prominent mottles; moderate medium prismatic parts to moderate medium subangular blocky structure; firm; 1.0 very fine roots between peds; 47.0 very fine moderate-continuity vesicular and tubular pores; 43 percent distinct very dark gray (10YR 3/1) clay films on faces of peds and in pores and 43 percent distinct very dark gray (10YR 3/1) organic stains on faces of peds and in pores; 5 percent fine and medium irregular iron-manganese concretions; fragments; neutral, pH 6.8, hellige-truog; clear smooth boundary. continuous - phpvsfiid 86691; continuous - phpvsfiid 86692; continuous - phpvsfiid 86691; continuous - phpvsfiid 86692
    Btg3—107 to 155 centimeters (42.1 to 61.0 inches); light brownish gray (2.5Y 6/2); 30 percent clay; 10 percent strong brown (7.5YR 4/6) fine and medium prominent and 17 percent brownish yellow (10YR 6/6) fine and medium prominent mottles; moderate medium prismatic structure; firm; 1.0 very fine roots between peds; 45.0 very fine moderate-continuity vesicular and tubular pores; 5 percent distinct black (10YR 2/1) organic stains in root channels and/or pores and 21 percent distinct very dark gray (10YR 3/1) clay films on faces of peds and in pores; 4 percent fine and medium irregular iron-manganese concretions; fragments; neutral, pH 6.6, hellige-truog; gradual smooth boundary. continuous - phpvsfiid 86693; continuous - phpvsfiid 86694; continuous - phpvsfiid 86693; continuous - phpvsfiid 86694
    Btg4—155 to 196 centimeters (61.0 to 77.2 inches); light brownish gray (2.5Y 6/2); 28 percent clay; 15 percent strong brown (7.5YR 4/6) medium and coarse prominent mottles; weak medium prismatic structure; firm; 1.0 very fine roots between peds; 43.0 very fine low-continuity vesicular and tubular pores; 10 percent distinct black (10YR 2/1) clay films in root channels and/or pores and 10 percent distinct black (10YR 2/1) organic stains in root channels and/or pores; 2 percent fine and medium irregular iron-manganese concretions; fragments; neutral, pH 6.8, hellige-truog. continuous - phpvsfiid 86695; continuous - phpvsfiid 86696; continuous - phpvsfiid 86695; continuous - phpvsfiid 86696