IDENTIFIERS

  • Current Taxon Name (Soil Name): Seymour
  • OSD
  • Series Extent
  • User Site ID: S1962IA185002
  • User Pedon ID: S1962IA185002
  • Vegetation Plot ID: S1962IA185002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A1505
  • NCSS Pedon Lab Data NASIS Record ID - 35113
  • Print Date: 2/16/2025

    • 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: 40.7022209
  • Std. Longitude: -93.3941650
  • Datum: WGS84
  • Township: 68N
  • Range: 22W
  • Section: 9
  • PLSS Details: 288 feet south and 223 feet west of the northeast corner of the SW1/4
  • Location Description: about 1 mile SW of Allerton.
  • State: Iowa
  • County: IA185—Wayne
  • MLRA: 109—Iowa and Missouri Heavy Till Plain
  • Non-MLRA Soil Survey Area: IA185—Wayne County, Iowa

    • PEDON

  • Describers Name: A.R. Hidlebaugh and R.I. Dideriksen
  • Current Taxonomic Class: Fine, smectitic, mesic Aquic Argiudolls
  • Current Taxon Kind: series
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Seymour
  • PSC - 28 to 70 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Seymour
  • Classificaton Date - 10/16/1962
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess
  • Geomorphic Component Hills: side slope
  • Slope Shape Down: convex
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/16/1962 (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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    TRIFO

    Trifolium

    clover

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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

    5

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    270

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    A1p—0 to 15 centimeters (0.0 to 5.9 inches); very dark gray (10YR 3/1), gray (10YR 5/1), dry; silt loam; weak medium subangular blocky, and moderate fine granular structure; friable; 10.0 fine roots; 3 percent dark brown (10YR 3/3) oxide coats and 3 percent black (10YR 2/1) oxide coats; fragments; strongly acid, pH 5.5, unspecified; abrupt smooth boundary. Lab sample # 40A11775
    A3—15 to 28 centimeters (5.9 to 11.0 inches); very dark gray (10YR 3/1) and dark grayish brown (10YR 4/2), gray (10YR 5/1) and gray (10YR 6/1), dry; silty clay loam; moderate very fine subangular blocky structure; friable; 10.0 fine roots; 3 percent dark brown (10YR 3/3) oxide coats and 3 percent black (10YR 2/1) oxide coats and 15 percent faint silt coats on faces of peds; fragments; strongly acid, pH 5.4, unspecified; clear smooth boundary. Lab sample # 40A11776. some granular structure.
    B1—28 to 40 centimeters (11.0 to 15.7 inches); dark grayish brown (2.5Y 4/2) and dark grayish brown (2.5Y 4/2) crushed, dark gray (10YR 4/1) and gray (10YR 6/1), dry; silty clay; 10 percent yellowish brown (10YR 5/6) fine and 10 percent yellowish brown (10YR 5/8) fine mottles; strong very fine subangular blocky structure; firm; 3 percent black (10YR 2/1) oxide coats and 15 percent silt coats on faces of peds; fragments; moderately acid, pH 5.6, unspecified; clear smooth boundary. Lab sample # 40A11777. few thin discontinuous clay films at 36 cm and below; some evidence of 3/1 silty clay loam fills in cracks and crevices.
    B21—40 to 48 centimeters (15.7 to 18.9 inches); dark grayish brown (2.5Y 4/2) and dark grayish brown (2.5Y 4/2) crushed, dark gray (10YR 4/1) and gray (10YR 6/1), dry; silty clay; 10 percent yellowish brown (10YR 5/6) fine and 10 percent yellowish brown (10YR 5/8) fine mottles; strong very fine and fine subangular blocky structure; firm; 0.5 fine roots; faint clay films on faces of peds; fragments; moderately acid, pH 5.8, unspecified; clear smooth boundary. Lab sample # 40A11778. some very dark gray silty clay loam from above horizon.; discontinuous - phpvsfiid 174928; discontinuous - phpvsfiid 174928
    B22—48 to 58 centimeters (18.9 to 22.8 inches); dark grayish brown (2.5Y 4/2) and dark grayish brown (2.5Y 4/2) crushed, dark gray (10YR 4/1) and gray (10YR 6/1), dry; silty clay; 10 percent yellowish brown (10YR 5/6) fine and 10 percent yellowish brown (10YR 5/8) fine mottles; strong very fine and fine subangular blocky structure; firm; 0.5 fine roots; faint clay films on faces of peds; fragments; moderately acid, pH 5.8, unspecified; clear smooth boundary. Lab sample # 40A11779. decrease in dark gray (10YR 4/1) colors.; discontinuous - phpvsfiid 174929; discontinuous - phpvsfiid 174929
    B23—58 to 70 centimeters (22.8 to 27.6 inches); olive gray (5Y 5/2) silty clay; 1 percent grayish brown (10YR 5/2) fine and 1 percent light olive brown (2.5Y 5/3) fine and 25 percent strong brown (7.5YR 5/6) fine mottles; moderate fine and medium subangular blocky structure; firm; 0.5 fine tubular pores; 3 percent faint clay films and 15 percent faint silt coats on faces of peds and 25 percent black (10YR 2/1) oxide coats; fragments; neutral, pH 6.6, unspecified; clear smooth boundary. Lab sample # 40A11780. some clay flows in fine pores; some very dark gray silty clay loam fills from above horizons.; patchy - phpvsfiid 174930; patchy - phpvsfiid 174930
    B31—70 to 80 centimeters (27.6 to 31.5 inches); strong brown (7.5YR 5/6) and olive gray (5Y 5/2) silty clay loam; moderate medium subangular blocky structure; firm; pressure faces and 15 percent dark gray (10YR 4/1) coats in root channels and/or pores and 55 percent black (10YR 2/1) oxide coats; fragments; neutral, pH 6.6, unspecified; clear wavy boundary. Lab sample # 40A11781. zone of iron accumulation - more diffuse pattern to the left of sampling hole; pressure faces are oblique; moisture present on peds.
    B32—80 to 110 centimeters (31.5 to 43.3 inches); gray (5Y 5/1) and olive gray (5Y 5/2) silty clay loam; 10 percent strong brown (7.5YR 5/6) fine mottles; weak coarse subangular blocky structure; firm; 3.0 fine tubular pores; distinct silt coats on faces of peds and distinct pressure faces and 15 percent dark gray (10YR 4/1) coats in root channels and/or pores; fragments; neutral, pH 6.7, unspecified; clear wavy boundary. Lab sample # 40A11782. mottles with some vertical distribution; 1/2 inch clay balls which are very dark gray in color; pressure faces are oblique.
    B33—110 to 130 centimeters (43.3 to 51.2 inches); gray (5Y 5/1) exterior and olive gray (5Y 5/2) interior silty clay loam; 10 percent strong brown (7.5YR 5/6) fine mottles; weak coarse subangular blocky structure; firm; 3.0 fine tubular pores; 15 percent dark gray (10YR 4/1) clay films on faces of peds and 15 percent pressure faces; fragments; neutral, pH 6.7, unspecified; abrupt wavy boundary. Lab sample # 40A11783. weak horizontal band of mottles; pressure faces are oblique.; discontinuous - phpvsfiid 174939; discontinuous - phpvsfiid 174939
    2Ab—130 to 153 centimeters (51.2 to 60.2 inches); dark gray (10YR 4/1) silty clay loam, sand; 10 percent dark yellowish brown (10YR 3/4) medium mottles; fragments; neutral, pH 6.7, unspecified. Lab sample # 40A11784. involuted Ab with tonguing of olive gray (5Y 5/2) loess into the paleosol; mottling increases at 60 to 64 inches.