IDENTIFIERS

  • Current Taxon Name (Soil Name): Knox
  • OSD
  • Series Extent
  • User Site ID: S1997IA047005L
  • User Pedon ID: S1997IA047005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0111
  • NCSS Pedon Lab Data NASIS Record ID - 10383
  • Print Date: 11/12/2024

    • 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: 41.9218102
  • Std. Longitude: -95.6138992
  • Datum: WGS84
  • Township: 82N
  • Range: 41W
  • Section: 10
  • PLSS Details: 150 feet north and 180 feet east of the southwest corner
  • State: Iowa
  • County: IA047—Crawford
  • MLRA: 107—Iowa and Missouri Deep Loess Hills
  • Non-MLRA Soil Survey Area: IA047—Crawford County, Iowa
  • 7.5 Minute USGS Quad: 41095-H5—Dunlap NE, Iowa

    • PEDON

  • Describers Name: SRS
  • Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Mollic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Knox
  • Classificaton Date - 9/7/2004
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Knox
  • Taxonomic Class - Fine-silty, mixed, mesic Mollic Hapludalf
  • Taxon Kind - series
  • Classificaton Date - 6/10/1997
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/10/1997 (actual site observation date)
  • Air Photo ID: 92
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    19

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    A—0 to 18 centimeters (0.0 to 7.1 inches); very dark brown (10YR 2/2), very dark grayish brown (10YR 3/2), dry; silt loam; 22 percent clay; moderate very fine and fine platy structure; friable; 10.0 fine and medium roots throughout; 75.0 very fine and fine high-continuity tubular pores; 75 percent faint black (10YR 2/1), moist, organic stains on faces of peds; fragments; slightly alkaline, pH 7.7, hellige-truog; clear boundary. Lab sample # 98P00727. continuous - phpvsfiid 201490; continuous - phpvsfiid 201490
    E—18 to 33 centimeters (7.1 to 13.0 inches); dark grayish brown (10YR 4/2), grayish brown (10YR 5/2), dry; silty clay loam; 28 percent clay; moderate very fine and fine subangular blocky structure; friable; 10.0 very fine and fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 75 percent faint light brownish gray (10YR 6/2), dry, organic stains on faces of peds; fragments; slightly acid, pH 6.4, hellige-truog; clear boundary. Lab sample # 98P00728. continuous - phpvsfiid 201491; continuous - phpvsfiid 201491
    Bt1—33 to 48 centimeters (13.0 to 18.9 inches); brown (10YR 4/3) silty clay loam; 34 percent clay; moderate and strong very fine and fine subangular blocky structure; friable; 10.0 very fine and fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 1 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds and 50 percent faint dark brown (10YR 3/3), moist, organic stains on faces of peds; fragments; strongly acid, pH 5.5, hellige-truog; clear boundary. Lab sample # 98P00729. discontinuous - phpvsfiid 201492; discontinuous - phpvsfiid 201493; discontinuous - phpvsfiid 201492; discontinuous - phpvsfiid 201493
    Bt2—48 to 74 centimeters (18.9 to 29.1 inches); dark yellowish brown (10YR 4/4) silty clay loam; 32 percent clay; moderate medium prismatic parts to moderate and strong fine subangular blocky structure; friable; 5.0 very fine and fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 10 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds and 10 percent faint dark brown (10YR 3/3), moist, organic stains on faces of peds and 50 percent faint brown (10YR 4/3), moist, clay films on faces of peds; fragments; strongly acid, pH 5.3, hellige-truog; clear boundary. Lab sample # 98P00730. discontinuous - phpvsfiid 201494; discontinuous - phpvsfiid 201495; discontinuous - phpvsfiid 201496; discontinuous - phpvsfiid 201494; discontinuous - phpvsfiid 201495; discontinuous - phpvsfiid 201496
    Bt3—74 to 102 centimeters (29.1 to 40.2 inches); dark yellowish brown (10YR 4/4) silty clay loam; 27 percent clay; moderate medium and coarse prismatic parts to moderate fine subangular blocky structure; friable; 5.0 very fine and fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 10 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds and in pores and 50 percent faint brown (10YR 4/3), moist, clay films on faces of peds; fragments; moderately acid, pH 5.9, hellige-truog; gradual boundary. Lab sample # 98P00731. discontinuous - phpvsfiid 201497; discontinuous - phpvsfiid 201498; discontinuous - phpvsfiid 201497; discontinuous - phpvsfiid 201498
    Bt4—102 to 127 centimeters (40.2 to 50.0 inches); yellowish brown (10YR 5/4) silt loam; 25 percent clay; moderate medium and coarse prismatic parts to moderate fine subangular blocky structure; friable; 5.0 very fine and fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 30 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds and 50 percent faint dark yellowish brown (10YR 4/4), moist, clay films on faces of peds; fragments; moderately acid, pH 5.8, hellige-truog; gradual boundary. Lab sample # 98P00732. discontinuous - phpvsfiid 201499; discontinuous - phpvsfiid 201500; discontinuous - phpvsfiid 201499; discontinuous - phpvsfiid 201500
    Bt5—127 to 152 centimeters (50.0 to 59.8 inches); yellowish brown (10YR 5/4) silty clay loam; 27 percent clay; moderate medium and coarse prismatic parts to moderate fine subangular blocky structure; friable; 5.0 very fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 30 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds and 50 percent faint dark yellowish brown (10YR 4/4), moist, clay films on faces of peds; fragments; slightly acid, pH 6.3, hellige-truog; gradual boundary. Lab sample # 98P00733. discontinuous - phpvsfiid 201501; discontinuous - phpvsfiid 201502; discontinuous - phpvsfiid 201501; discontinuous - phpvsfiid 201502
    Bt6—152 to 178 centimeters (59.8 to 70.1 inches); yellowish brown (10YR 5/4) silty clay loam; 28 percent clay; moderate medium and coarse prismatic parts to moderate fine and medium subangular blocky structure; friable; 1.0 very fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 30 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds and 50 percent faint dark yellowish brown (10YR 4/4), moist, clay films on faces of peds; fragments; slightly acid, pH 6.3, hellige-truog; clear boundary. Lab sample # 98P00734. discontinuous - phpvsfiid 201503; discontinuous - phpvsfiid 201504; discontinuous - phpvsfiid 201503; discontinuous - phpvsfiid 201504
    BC—178 to 203 centimeters (70.1 to 79.9 inches); yellowish brown (10YR 5/4) silt loam; 24 percent clay; weak medium and coarse prismatic parts to weak fine and medium subangular blocky structure; friable; 1.0 very fine roots throughout; 75.0 very fine and fine high-continuity tubular pores; 50 percent faint dark yellowish brown (10YR 4/4), moist, clay films on faces of peds and 50 percent distinct light brownish gray (10YR 6/2), dry, silt coats on faces of peds; fragments; slightly acid, pH 6.1, hellige-truog. Lab sample # 98P00735. discontinuous - phpvsfiid 201505; discontinuous - phpvsfiid 201506; discontinuous - phpvsfiid 201505; discontinuous - phpvsfiid 201506