IDENTIFIERS

  • Current Taxon Name (Soil Name): Poynor
  • OSD
  • Series Extent
  • User Site ID: 1995MO203008M
  • User Pedon ID: 1995MO203008M
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9561308
  • NCSS Pedon Lab Data NASIS Record ID - 31896
  • User Project ID: 2021-25NCSPR013
  • Project Name: MLRA 116A - Mark Twain National Forest Update
  • Print Date: 12/17/2024

    • 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: 37.0112139
  • Std. Longitude: -91.4789222
  • Datum: WGS84
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO203—Shannon County, Missouri
  • 7.5 Minute USGS Quad: 37091-A4—Bartlett, Missouri

    • PEDON

  • Describers Name: SAV, JW, JDC, RLT
  • Current Taxonomic Class: Loamy-skeletal over clayey, siliceous, subactive, mesic Typic Paleudults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Poynor
  • PSC - 46 to 100 cm.
  • Classificaton Date - 2/21/2024
  • Classifier - Campbell and Meinert
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Poynor
  • Taxonomic Class - Loamy-skeletal over clayey, siliceous, semiactive, mesic Typic Paleudults
  • Taxon Kind - series
  • PSC - 46 to 100 cm.
  • Classificaton Date - 4/19/1995
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • Field Measured Properties: 26 Percent rock fragments in the control section (vol) and 24 percent of Percent clay in the control section and 23 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: slope alluvium over residuum
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/19/1995 (actual site observation date)
  • Air Photo ID: 19
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    3—49

    49—221

    —-

    —-
    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

    14

    —

    —

    341

    —

    140

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments.
    A—3 to 13 centimeters (1.2 to 5.1 inches); brown (10YR 5/3) extremely gravelly silt loam; weak fine granular structure; friable; 3.0 medium roots and 3.0 fine roots and 0.5 coarse roots; 7.0 fine interstitial pores; 75 percent distinct dark grayish brown (10YR 4/2), moist, organic stains on faces of peds; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 80 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # MU054312
    E1—13 to 26 centimeters (5.1 to 10.2 inches); yellowish brown (10YR 5/4) very gravelly silt loam; weak very fine subangular blocky structure; friable; 3.0 medium roots and 0.5 fine roots and 0.5 coarse roots; 3.0 fine tubular pores; 75 percent faint light yellowish brown (10YR 6/4), moist, silt coats throughout; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 40 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # MU054313
    E2—26 to 49 centimeters (10.2 to 19.3 inches); 60 percent light yellowish brown (10YR 6/4) and 40 percent strong brown (7.5YR 5/6) extremely gravelly silt loam; weak fine subangular blocky structure; friable; 0.5 medium roots and 0.5 fine roots and 0.5 coarse roots; 0.5 medium vesicular and 3.0 fine tubular pores; 35 percent distinct yellowish red (5YR 4/6), moist, clay films on faces of peds and 75 percent distinct light yellowish brown (10YR 6/4), moist, silt coats throughout; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 65 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU054314
    Bt1—49 to 61 centimeters (19.3 to 24.0 inches); 60 percent light yellowish brown (10YR 6/4) and 40 percent red (2.5YR 5/6) extremely gravelly silt loam; weak fine subangular blocky structure; firm; 0.5 medium roots and 0.5 fine roots and 0.5 coarse roots; 0.5 medium vesicular and 0.5 medium tubular and 3.0 fine tubular pores; 35 percent distinct reddish brown (5YR 5/4), moist, clay films on rock fragments and 75 percent distinct light yellowish brown (10YR 6/4), moist, silt coats throughout; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 60 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU054315
    Bt2—61 to 77 centimeters (24.0 to 30.3 inches); 50 percent red (2.5YR 5/6) and 50 percent yellowish red (5YR 5/6) clay loam; moderate medium angular blocky structure; firm; 0.5 medium roots and 0.5 fine roots; 0.5 medium vesicular and 3.0 fine tubular pores; 35 percent distinct red (2.5YR 4/6), moist, clay films on faces of peds and 35 percent distinct strong brown (7.5YR 5/6), moist, silt coats throughout; 2 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 10 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU054316. Course fragments are in pockets.
    2Bt3—77 to 94 centimeters (30.3 to 37.0 inches); 50 percent red (2.5YR 5/6) and 50 percent yellowish red (5YR 5/6) clay; moderate fine angular blocky, and weak fine subangular blocky structure; firm; 0.5 fine roots; 3.0 fine tubular pores; 15 percent distinct red (2.5YR 4/6), moist, clay films on faces of peds and 15 percent distinct strong brown (7.5YR 5/6), moist, silt coats on faces of peds; 2 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 10 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU054317
    2Bt4—94 to 120 centimeters (37.0 to 47.2 inches); 40 percent red (2.5YR 5/6) and 30 percent yellowish red (5YR 5/6) and 27 percent strong brown (7.5YR 5/8) and 3 percent white (10YR 8/1) gravelly clay; moderate fine subangular blocky structure; firm; 0.5 fine roots; 3.0 fine interstitial and tubular pores; 15 percent distinct red (2.5YR 4/6), moist, pressure faces on faces of peds; 2 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 15 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU054318. Course fragments are in pockets.
    2Bt5—120 to 148 centimeters (47.2 to 58.3 inches); 75 percent yellowish red (5YR 5/6) and 25 percent strong brown (7.5YR 5/6) clay; moderate fine angular blocky structure; firm; 0.5 fine roots; 3.0 fine interstitial and tubular pores; 75 percent distinct red (2.5YR 4/6), moist, pressure faces on faces of peds; 2 percent by volume nonflat indurated 2-40-75 millimeter chert fragments and 2 percent by volume nonflat indurated 75-162-250 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; gradual wavy boundary. Lab sample # MU054319
    2Bt6—148 to 181 centimeters (58.3 to 71.3 inches); 80 percent yellowish red (5YR 5/6) and 19 percent strong brown (7.5YR 5/6) and 1 percent white (10YR 8/1) clay; strong very coarse angular blocky structure; very firm; 0.5 fine interstitial and tubular pores; 75 percent distinct yellowish red (5YR 5/6), moist, pressure faces on faces of peds; 5 percent by volume nonflat indurated 2-40-75 millimeter chert fragments and 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; gradual wavy boundary. Lab sample # MU054320. Course fragments are in pockets.
    2Bt8—181 to 221 centimeters (71.3 to 87.0 inches); 85 percent red (2.5YR 4/6) and 15 percent strong brown (7.5YR 5/8) clay; weak medium angular blocky structure; very firm; 0.5 fine interstitial and tubular pores; 75 percent distinct red (2.5YR 4/6), moist, pressure faces on faces of peds; 10 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog. Lab sample # MU054321