IDENTIFIERS

  • Current Taxon Name (Soil Name): ARMSTRONG
  • OSD
  • Series Extent
  • User Site ID: 1990MO129003m
  • User Pedon ID: 1990MO129003m
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9012903
  • NCSS Pedon Lab Data NASIS Record ID - 26473
  • 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: 40.3098717
  • Std. Longitude: -93.5083618
  • Datum: WGS84
  • Township: T64N
  • Range: R23W
  • Section: 29
  • PLSS Details: 2460 feet west and 240 feet north of the southeast corner
  • Map Unit: 50001—Armstrong loam, 5 to 9 percent slopes, eroded
  • Country: US—United States
  • State: Missouri
  • County: MO129—Mercer
  • MLRA: 109—Iowa and Missouri Heavy Till Plain
  • Regional Office: NC—North Central
  • Non-MLRA Soil Survey Area: MO129—Mercer County, Missouri
  • 7.5 Minute USGS Quad: 40093-C5—Mill Grove, Missouri

    • PEDON

  • Describers Name: bf, Gene Campbell
  • Current Taxonomic Class: Fine, mixed, superactive, Aquertic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - ARMSTRONG
  • PSC - 15 to 66 cm.
  • Classificaton Date - 4/12/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Armstrong
  • Classificaton Date - 11/23/2004
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: fine-silty loess derived from mixed over clayey till derived from mixed
  • Landscape: till plain
  • Landform: hillslope
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Complexity: simple
  • Slope Shape Across: concave
  • Slope Shape Down: convex
  • Runoff: negligible
  • Drainage Class: somewhat poorly
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Holocene Stage formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/23/2004 (actual site observation date)
  • Air Photo ID: 40093c5se
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - hayland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Yield Study ID -
  • Site Erosion Accelerated: water erosion sheet
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    aquic conditions

    0—15

    15—71

    15—152

    —15—

    —56—

    —137—
    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

    6

    —

    —

    295.7

    —

    0

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 15 centimeters (0.0 to 5.9 inches); very dark grayish brown (10YR 3/2) rubbed, grayish brown (10YR 5/2) rubbed, dry; loam; 40 percent sand; 39 percent silt; 20 percent clay; weak fine granular structure; friable; 10.0 fine roots throughout; fragments; neutral, pH 7.2, pH meter; clear smooth boundary. Lab sample # MU009856; observed in pit, small
    Bt1—15 to 25 centimeters (5.9 to 9.8 inches); dark yellowish brown (10YR 4/4) rubbed clay loam; 32 percent sand; 36 percent silt; 31 percent clay; weak fine subangular blocky structure; friable; 3.0 fine roots throughout; 3 percent distinct clay films on all faces of peds; 3 percent fine prominent irregular noncoherent cemented yellowish red (5YR 5/6), moist, masses of oxidized iron with clear boundaries throughout; fragments; moderately acid, pH 5.9, pH meter; clear smooth boundary. Lab sample # MU009857; observed in pit, small. discontinuous - phpvsfiid 448292; discontinuous - phpvsfiid 448292
    2Bt2—25 to 41 centimeters (9.8 to 16.1 inches); brown (7.5YR 4/4) interior clay; 23 percent sand; 29 percent silt; 46 percent clay; moderate fine subangular blocky structure; firm; 3.0 fine roots throughout; 7 percent distinct clay films on all faces of peds; 3 percent fine distinct irregular noncoherent cemented dark grayish brown (10YR 4/2), moist, masses of oxidized iron with diffuse boundaries throughout and 7 percent fine prominent irregular noncoherent cemented yellowish red (5YR 4/6), moist, masses of oxidized iron with diffuse boundaries throughout; fragments; very strongly acid, pH 4.9, pH meter; clear smooth boundary. Lab sample # MU009858; observed in pit, small. continuous - phpvsfiid 448293; continuous - phpvsfiid 448293
    2Bt3—41 to 71 centimeters (16.1 to 28.0 inches); strong brown (7.5YR 5/6) interior clay; 23 percent sand; 27 percent silt; 48 percent clay; moderate fine subangular blocky structure; firm; 3.0 fine roots throughout; 7 percent distinct clay films on all faces of peds; 3 percent fine distinct irregular noncoherent cemented dark grayish brown (10YR 4/2), moist, masses of oxidized iron with diffuse boundaries throughout and 7 percent fine prominent irregular noncoherent cemented yellowish red (5YR 4/6), moist, masses of oxidized iron with diffuse boundaries throughout; fragments; very strongly acid, pH 4.8, pH meter; gradual smooth boundary. Lab sample # MU009859; observed in pit, small. continuous - phpvsfiid 448294; continuous - phpvsfiid 448294
    2BC—71 to 102 centimeters (28.0 to 40.2 inches); yellowish brown (10YR 5/4) interior clay; 27 percent sand; 31 percent silt; 40 percent clay; weak fine subangular blocky structure; firm; 3.0 fine roots in cracks; 7 percent distinct clay films on all faces of peds; 7 percent medium distinct irregular noncoherent cemented yellowish brown (10YR 5/6), moist, masses of oxidized iron with diffuse boundaries throughout and 15 percent fine distinct spherical strongly coherent cemented iron-manganese concretions with sharp boundaries in matrix; fragments; strongly acid, pH 5.4, pH meter; clear smooth boundary. Lab sample # MU009860; observed in pit, small. continuous - phpvsfiid 448295; continuous - phpvsfiid 448295
    2C—102 to 152 centimeters (40.2 to 59.8 inches); yellowish brown (10YR 5/6) interior clay loam; 29 percent sand; 37 percent silt; 33 percent clay; weak medium subangular blocky, and prismatic structure; firm; 7 percent fine distinct irregular noncoherent cemented yellowish brown (10YR 5/6), moist, masses of oxidized iron with diffuse boundaries throughout; 15 percent medium distinct extremely weakly coherent cemented carbonate masses with clear boundaries; fragments; slightly alkaline, pH 7.7, pH meter. Lab sample # MU009861; observed in pit, small