IDENTIFIERS

  • Current Taxon Name (Soil Name): Poynor
  • OSD
  • Series Extent
  • User Site ID: 1996MO067098M
  • User Pedon ID: 1996MO067098
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9706706
  • 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: 36.8028836
  • Std. Longitude: -92.1794282
  • Datum: WGS84
  • Township: T25N
  • Range: R11W
  • Section: 32
  • Location Description: 250 feet east of forest service road and 900 feet north of county road in sec 32 T25N R11W.
  • Map Unit: 73220—Poynor extremely gravelly silt loam, 8 to 15 percent slopes
  • State: Missouri
  • County: MO067—Douglas
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO067—Douglas County, Missouri
  • 7.5 Minute USGS Quad: 36092-G2—Dora, Missouri

    • PEDON

  • Describers Name: KEB, WLS and GWS
  • Current Taxonomic Class: Loamy-skeletal over clayey, siliceous Typic Hapludults
  • Current Taxon Kind: taxon above family
  • Pedon Type: within range of map unit
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Poynor
  • PSC - 25 to 100 cm.
  • Classificaton Date - 4/18/2012
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Poynor
  • Taxon Kind - variant
  • PSC - 25 to 100 cm.
  • Classificaton Date - 12/9/1996
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from dolomite
  • Landscape: hills
  • Landform: ridge
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: shoulder
  • Slope Position: upper third
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/9/1996 (actual site observation date)
  • Air Photo ID: 2251-149
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—25

    25—145

    —-

    —-
    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

    11

    —

    —

    302

    —

    80

    1092

    —

    —

    12.8

    —

    —

    —

    —

    —

    —

    —

    5227

    Mansfield, Mo.

    TAPS
    Oi—0 to 5 centimeters (0.0 to 2.0 inches); slightly decomposed plant material; fragments; abrupt smooth boundary. Lab sample # MU64241
    A—5 to 10 centimeters (2.0 to 3.9 inches); very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dry; very gravelly silt loam; moderate very fine granular structure; very friable; 6.0 very fine to medium roots; 40 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.3, hellige-truog; abrupt smooth boundary. Lab sample # MU057248
    E—10 to 25 centimeters (3.9 to 9.8 inches); yellowish brown (10YR 5/4), very pale brown (10YR 7/3), dry; gravelly silt loam; weak fine subangular blocky parts to moderate very fine granular structure; friable; 6.0 very fine and fine roots and 0.5 medium and coarse roots; 3.0 very fine and fine tubular pores; 30 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU057249
    Bt1—25 to 46 centimeters (9.8 to 18.1 inches); 95 percent yellowish brown (10YR 5/4) and 5 percent brown (7.5YR 4/4), very pale brown (10YR 7/3), dry; very gravelly silt loam; moderate very fine subangular blocky structure; friable; 6.0 very fine and fine roots and 0.5 medium roots; 3.0 very fine to medium tubular pores; 3 percent faint clay films on faces of peds and in pores; 50 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU057250. discontinuous - phpvsfiid 128458; discontinuous - phpvsfiid 128458
    Bt2—46 to 58 centimeters (18.1 to 22.8 inches); 30 percent red (2.5YR 4/6) and 50 percent yellowish red (5YR 5/6) and 20 percent light yellowish brown (10YR 6/4) very gravelly silty clay loam; moderate very fine subangular blocky structure; friable; 3.0 very fine and fine roots and 0.5 medium roots; 15 percent distinct clay films on faces of peds and 15 percent distinct silt coats on rock fragments; 40 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.1, hellige-truog; clear wavy boundary. Lab sample # MU057251. discontinuous - phpvsfiid 128459; discontinuous - phpvsfiid 128460; discontinuous - phpvsfiid 128459; discontinuous - phpvsfiid 128460
    2Bt3—58 to 84 centimeters (22.8 to 33.1 inches); 95 percent red (2.5YR 4/6) and 5 percent brown (7.5YR 5/4) clay; moderate medium prismatic parts to moderate very fine subangular blocky structure; firm; 0.5 very fine to medium roots; 30 percent distinct clay films on vertical faces of peds; fragments; strongly acid, pH 5.1, hellige-truog; gradual smooth boundary. Lab sample # MU057252. discontinuous - phpvsfiid 128461; discontinuous - phpvsfiid 128461
    2Bt4—84 to 114 centimeters (33.1 to 44.9 inches); 80 percent red (2.5YR 4/6) and 20 percent brown (7.5YR 5/4) clay; moderate medium prismatic parts to moderate very fine subangular blocky structure; firm; 0.5 very fine to medium roots; 70 percent prominent clay films on vertical faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog; gradual smooth boundary. Lab sample # MU057253. continuous - phpvsfiid 128462; continuous - phpvsfiid 128462
    2Bt5—114 to 135 centimeters (44.9 to 53.1 inches); 60 percent red (2.5YR 4/6) and 40 percent strong brown (7.5YR 5/6) clay; moderate medium prismatic parts to moderate very fine subangular blocky structure; firm; 0.5 very fine and fine roots; 70 percent prominent clay films on vertical faces of peds; fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU057254. discontinuous - phpvsfiid 128463; discontinuous - phpvsfiid 128463
    2Bt6—135 to 145 centimeters (53.1 to 57.1 inches); 60 percent dark red (2.5YR 3/6) and 35 percent strong brown (7.5YR 5/6) and 5 percent gray (7.5YR 5/1) gravelly clay; moderate very fine and fine subangular blocky structure; firm; 70 percent prominent clay films on vertical faces of peds; 15 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.6, hellige-truog; abrupt smooth boundary. Lab sample # MU057255. continuous - phpvsfiid 128464; continuous - phpvsfiid 128464
    2R—145 centimeters (57.1 inches); bedrock; fragments.