IDENTIFIERS

  • Current Taxon Name (Soil Name): Virden
  • OSD
  • Series Extent
  • User Site ID: S1987IL109033
  • User Pedon ID: S1987IL109033
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - IL SCL
  • Lab Pedon # - 87IL109033
  • NCSS Pedon Lab Data NASIS Record ID - 22066
  • Print Date: 4/30/2025

    • 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: 40.4528083
  • Std. Longitude: -90.8403361
  • Datum: WGS84
  • Township: 5N
  • Range: 4W
  • Section: 3
  • PLSS Details: 2540 feet E & 1890 feet S of NW corner
  • Map Unit: 50A—Virden silty clay loam, 0 to 2 percent slopes
  • Country: US—United States
  • State: Illinois
  • County: IL109—McDonough
  • MLRA: 108—Illinois and Iowa Deep Loess and Drift
  • Regional Office: NC—North Central
  • Non-MLRA Soil Survey Area: IL109—McDonough County, Illinois
  • 7.5 Minute USGS Quad: 40090-D7—Colchester, Illinois

    • PEDON

  • Describers Name: Michael B. Walker
  • Current Taxonomic Class: Fine, smectitic, mesic Vertic Argiaquolls
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: PedonPC
  • Pedon #: 33
  • Correlated Information:
  • Soil Name - Virden
  • PSC - 36 to 86 cm.
  • Classificaton Date - 1/4/2010
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - aquic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Virden
  • Classificaton Date - 3/1/1987
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: ground moraine, till plain
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/1/1987 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Ap

    A

    Btg1

    Btg2

    Btg3

    BCg

    Cg

    0

    20

    36

    51

    76

    109

    124

    20

    36

    51

    76

    109

    124

    152

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Ap

    A

    Btg1

    Btg2

    Btg3

    BCg

    Cg

    0

    20

    36

    51

    76

    109

    124

    20

    36

    51

    76

    109

    124

    152

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Ap

    A

    Btg1

    Btg2

    Btg3

    BCg

    Cg

    0

    20

    36

    51

    76

    109

    124

    20

    36

    51

    76

    109

    124

    152

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

    mollic epipedon

    aquic conditions

    argillic horizon

    0—36

    0—200

    36—89

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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

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    Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark brown (10YR 2/2), dark gray (10YR 4/1), dry; silt loam; moderate fine granular structure; friable; many (10.0) very fine roots between peds; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL33594
    A—20 to 36 centimeters (7.9 to 14.2 inches); black (10YR 2/1), dark grayish brown (10YR 4/2), dry; silty clay loam; moderate fine granular, and moderate medium granular structure; friable; many (10.0) very fine roots between peds; very dark gray (5Y 3/1), moist,; 1 percent fine distinct irregular dark brown (7.5YR 3/3), moist, iron-manganese masses with sharp boundaries throughout; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL33595
    Btg1—36 to 51 centimeters (14.2 to 20.1 inches); dark grayish brown (2.5Y 4/2) silty clay loam; mottles; moderate fine prismatic parts to moderate fine subangular blocky structure; friable; common (3.0) very fine roots between peds; 25 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds and 50 percent prominent black (10YR 2/1), moist, organic stains on all faces of peds; 1 percent fine prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses with clear boundaries throughout and 1 percent fine prominent spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions with sharp boundaries throughout and 10 percent fine prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron with clear boundaries in matrix; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL33596. continuous - phpvsfiid 1406314; continuous - phpvsfiid 1406315; continuous - phpvsfiid 1406314; continuous - phpvsfiid 1406315
    Btg2—51 to 76 centimeters (20.1 to 29.9 inches); grayish brown (2.5Y 5/2) silty clay; and mottles; moderate medium prismatic parts to moderate medium subangular blocky structure; friable; common (3.0) very fine roots between peds; 10 percent distinct very dark grayish brown (10YR 3/2), moist, organoargillans on all faces of peds and 25 percent distinct dark grayish brown (2.5Y 4/2), moist, clay films on all faces of peds; 1 percent fine prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses with clear boundaries throughout and 1 percent medium prominent spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions with sharp boundaries throughout and 10 percent medium prominent irregular yellowish brown (10YR 5/8), moist, masses of oxidized iron with diffuse boundaries in matrix and 25 percent medium distinct irregular light olive brown (2.5Y 5/4), moist, masses of oxidized iron with clear boundaries in matrix; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL33597, IL33598. Horizon split for sampling: IL33597 51 to 64 cm, IL33598 64 to 76 cm.; continuous - phpvsfiid 1406317; continuous - phpvsfiid 1406318; continuous - phpvsfiid 1406317; continuous - phpvsfiid 1406318
    Btg3—76 to 109 centimeters (29.9 to 42.9 inches); olive gray (5Y 5/2) silty clay loam; mottles; moderate medium subangular blocky structure; friable; few (0.8) very fine roots between peds; 10 percent distinct very dark grayish brown (10YR 3/2), moist, organoargillans on vertical faces of peds; 1 percent fine prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses with clear boundaries throughout and 10 percent fine prominent irregular strong brown (7.5YR 5/8), moist, masses of oxidized iron with diffuse boundaries in matrix; fragments; neutral, pH 7.0; gradual smooth boundary. Lab sample # IL33599, IL33600. Horizon split for sampling: IL33599 76 to 89 cm, IL33600 89 to 109 cm.; continuous - phpvsfiid 1406312; continuous - phpvsfiid 1406312
    BCg—109 to 124 centimeters (42.9 to 48.8 inches); olive gray (5Y 5/2) silty clay loam; mottles; weak coarse subangular blocky structure; friable; few (0.8) very fine roots between peds; 10 percent prominent very dark gray (5Y 3/1), moist, organoargillans on surfaces along pores; 1 percent fine prominent irregular dark brown (7.5YR 3/3), moist, iron-manganese masses with diffuse boundaries throughout and 10 percent fine prominent irregular yellowish brown (10YR 5/8), moist, masses of oxidized iron with diffuse boundaries in matrix; fragments; neutral, pH 7.0; gradual smooth boundary. Lab sample # IL33601. continuous - phpvsfiid 1406319; continuous - phpvsfiid 1406319
    Cg—124 to 152 centimeters (48.8 to 59.8 inches); light olive gray (5Y 6/2) silty clay loam; mottles; massive; friable; few (0.8) very fine roots top of horizon; 10 percent prominent very dark gray (5Y 3/1), moist, organoargillans on surfaces along pores; 10 percent fine prominent irregular yellowish brown (10YR 5/8), moist, masses of oxidized iron with diffuse boundaries in matrix; fragments; slightly alkaline, pH 7.6. Lab sample # IL33602. continuous - phpvsfiid 1406316; continuous - phpvsfiid 1406316