IDENTIFIERS

  • Current Taxon Name (Soil Name): Darwin
  • OSD
  • Series Extent
  • User Site ID: 2006MO219004
  • User Pedon ID: 2006MO219004
  • Vegetation Plot ID: 2006MO219004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0621904
  • NCSS Pedon Lab Data NASIS Record ID - 25430
  • 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: 38.6097222
  • Std. Longitude: -91.1170833
  • Datum: WGS84
  • Township: T45N
  • Range: R2W
  • Section: 35
  • PLSS Details: 204 feet East and 1,346 feet North from the South West corner
  • Country: US—United States
  • State: Missouri
  • County: MO219—Warren
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: MO603—Montgomery and Warren Counties, Missouri
  • 7.5 Minute USGS Quad: 38091-E1—Washington West, Missouri

    • PEDON

  • Describers Name: Ralph Tucker
  • Current Taxonomic Class: Fine, smectitic, noncalcareous, mesic Fluvaquentic Endoaquolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 4
  • Sampled As Information:
  • Soil Name - Darwin
  • Taxonomic Class - Fine, smectitic, noncalcareous, mesic Fluvaquentic Endoaquolls
  • PSC - 25 to 102 cm.
  • Classificaton Date - 12/12/2006
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - aquic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey alluvium derived from mixed
  • Landscape: river valley
  • Landform: flood plain
  • Geomorphic Component Hills: interfluve
  • Slope Complexity: simple
  • Slope Shape Across: concave
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: poorly
  • Flooding: occasional flooding for long periods
  • Ponding: none ponding
  • Geology: Holocene Stage formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/12/2006 (actual site observation date)
  • Air Photo ID: 38091e1nw
  • Surface Water Kind: flooded
  • Surface Water Depth: 15
  • 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
  • Site Erosion Accelerated: water erosion gully
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ZEMA

    Zea mays

    corn

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

    mollic epipedon

    aquic conditions

    cambic horizon

    0—132

    15—152

    28—132

    —132—

    —137—

    —104—
    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

    1

    —

    —

    146.3

    —

    0

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    Ap1—0 to 15 centimeters (0.0 to 5.9 inches); very dark grayish brown (10YR 3/2) broken face silty clay loam; weak fine subangular blocky structure; firm; fragments; slight effervescence, by hcl, 1n; clear smooth boundary. Lab sample # MU002356; observed in push tube
    Ap2—15 to 28 centimeters (5.9 to 11.0 inches); very dark grayish brown (10YR 3/2) broken face silty clay loam; moderate fine subangular blocky structure; firm; fragments; slight effervescence, by hcl, 1n; abrupt smooth boundary. Lab sample # MU002357; observed in push tube
    Bw1—28 to 53 centimeters (11.0 to 20.9 inches); very dark gray (10YR 3/1) broken face clay loam; moderate fine subangular blocky, and weak prismatic structure; firm; fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # MU002358; observed in push tube
    Bw2—53 to 61 centimeters (20.9 to 24.0 inches); black (10YR 2/1) broken face silty clay; moderate medium subangular blocky structure; firm; 1 percent medium faint irregular noncoherent cemented yellowish red (5YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented dark grayish brown (10YR 4/2), moist, iron depletions with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # MU002359; observed in push tube
    Bw3—61 to 89 centimeters (24.0 to 35.0 inches); very dark gray (10YR 3/1) broken face silty clay loam; moderate fine subangular blocky, and moderate prismatic structure; firm; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # MU002360; observed in push tube
    Bw4—89 to 109 centimeters (35.0 to 42.9 inches); very dark gray (10YR 3/1) broken face silty clay; moderate fine subangular blocky, and moderate prismatic structure; firm; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/6), moist, iron depletions with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; clear smooth boundary.; observed in push tube
    Bw5—109 to 132 centimeters (42.9 to 52.0 inches); very dark gray (10YR 3/1) broken face silty clay; moderate fine subangular blocky, and moderate prismatic structure; firm; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/6), moist, iron depletions with clear boundaries in matrix; fragments; noneffervescent, by hcl, 1n; clear smooth boundary.; observed in push tube
    2C—132 to 152 centimeters (52.0 to 59.8 inches); 60 percent dark grayish brown (10YR 4/2) broken face and 40 percent grayish brown (10YR 5/2) broken face very fine sandy loam; loose; 1 percent medium faint irregular noncoherent cemented gray (10YR 5/1), moist, iron depletions with clear boundaries in matrix; fragments; strong effervescence, by hcl, 1n. Lab sample # MU002363; observed in push tube