IDENTIFIERS

  • Current Taxon Name (Soil Name): Poynor
  • OSD
  • Series Extent
  • User Site ID: 1995MO091023M
  • User Pedon ID: 1995MO091023
  • Vegetation Plot ID: 1995MO091023
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9509113
  • 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: 36.9649806
  • Std. Longitude: -91.6953694
  • Datum: WGS84
  • Map Unit: 73297—Poynor-Scholten complex, 15 to 35 percent slopes
  • State: Missouri
  • County: MO091—Howell
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO091—Howell County, Missouri

    • PEDON

  • Describers Name: SFP, MJM, JDP
  • Current Taxonomic Class: Loamy-skeletal over clayey, siliceous Typic Paleudults
  • Current Taxon Kind: taxadjunct
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Poynor
  • PSC - 8 to 100 cm.
  • Classificaton Date - 4/18/2012
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Poynor
  • Taxon Kind - variant
  • PSC - 8 to 100 cm.
  • Classificaton Date - 3/13/1995
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess derived from mixed and/or unconsolidated sediments derived from mixed
  • Landscape: hills
  • Landform: hill
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/13/1995 (actual site observation date)
  • Air Photo ID: 2227-212
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    QUVE

    Quercus velutina

    black oak

    —

    —

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

    ochric epipedon

    argillic horizon

    0—5

    5—203

    —-

    —-
    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

    —

    —

    357

    —

    290

    1067

    —

    —

    13.3

    23.9

    1.7

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments. Lab sample # MU64422
    A—3 to 8 centimeters (1.2 to 3.1 inches); brown (10YR 4/3) exterior, pale brown (10YR 6/3) exterior, dry; extremely gravelly silt loam; weak fine granular structure; very friable; 8.0 fine and medium roots throughout and 1.0 coarse roots throughout; 10.0 very fine interstitial pores; 10 percent distinct black (10YR 2/1), moist, organic stains throughout; 65 percent by volume subangular 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, unspecified; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # MU052950. patchy - phpvsfiid 143577; patchy - phpvsfiid 143577
    Bt1—8 to 28 centimeters (3.1 to 11.0 inches); brown (7.5YR 5/4) exterior very gravelly silt loam; weak fine subangular blocky structure; friable; 2.0 medium roots throughout and 5.0 fine roots throughout and 1.0 coarse roots throughout; 5.0 very fine discontinuous tubular pores; 5 percent faint strong brown (7.5YR 4/6), moist, clay films on faces of peds; 40 percent by volume subangular 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, unspecified; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # MU052951. patchy - phpvsfiid 139702; patchy - phpvsfiid 139702
    Bt2—28 to 43 centimeters (11.0 to 16.9 inches); strong brown (7.5YR 5/6) exterior very gravelly silt loam; weak fine subangular blocky structure; friable; 2.0 medium roots throughout and 5.0 fine roots throughout; 10.0 very fine discontinuous tubular pores; 10 percent distinct yellowish red (5YR 4/6), moist, clay films on faces of peds and in pores and 15 percent prominent pale brown (10YR 6/3), moist, silt coats on rock fragments; 40 percent by volume subangular 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, unspecified; moderately acid, pH 6.0, hellige-truog; clear wavy boundary. Lab sample # MU052952. discontinuous - phpvsfiid 139705; patchy - phpvsfiid 139706; discontinuous - phpvsfiid 139705; patchy - phpvsfiid 139706
    Bt3—43 to 61 centimeters (16.9 to 24.0 inches); strong brown (7.5YR 5/6) exterior very cobbly silt loam; moderate fine subangular blocky structure; friable; 1.0 medium roots throughout and 2.0 fine roots throughout; 10.0 very fine discontinuous tubular pores; 15 percent distinct yellowish red (5YR 4/6), moist, clay films on faces of peds and in pores and 15 percent prominent pale brown (10YR 6/3), moist, silt coats on rock fragments; 20 percent by volume subangular 2-39-75 millimeter mixed fragments and 20 percent by volume subangular 75-162-250 millimeter mixed fragments; noneffervescent, by hcl, unspecified; moderately acid, pH 5.8, hellige-truog; clear wavy boundary. Lab sample # MU052953. discontinuous - phpvsfiid 139709; patchy - phpvsfiid 139710; discontinuous - phpvsfiid 139709; patchy - phpvsfiid 139710
    Bt4—61 to 84 centimeters (24.0 to 33.1 inches); yellowish brown (10YR 5/4) exterior extremely gravelly silt loam; weak fine subangular blocky structure; friable; 1.0 medium roots throughout and 1.0 fine roots throughout; 10.0 very fine discontinuous tubular pores; 20 percent prominent red (2.5YR 4/6), moist, clay films on faces of peds and in pores and 30 percent faint pale brown (10YR 6/3), moist, silt coats on rock fragments; 70 percent by volume subangular 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, unspecified; moderately acid, pH 5.6, hellige-truog; abrupt smooth boundary. Lab sample # MU052954. discontinuous - phpvsfiid 139711; discontinuous - phpvsfiid 139723; discontinuous - phpvsfiid 139711; discontinuous - phpvsfiid 139723
    2Bt5—84 to 109 centimeters (33.1 to 42.9 inches); yellowish red (5YR 5/6) exterior gravelly silty clay; moderate fine subangular blocky structure; firm; 1.0 fine roots throughout; 15.0 very fine discontinuous tubular pores; 40 percent distinct red (2.5YR 4/6), moist, clay films on faces of peds and in pores; 15 percent by volume subangular 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, unspecified; strongly acid, pH 5.4, hellige-truog; clear smooth boundary. Lab sample # MU052955. discontinuous - phpvsfiid 139724; discontinuous - phpvsfiid 139724
    2Bt6—109 to 203 centimeters (42.9 to 79.9 inches); reddish yellow (5YR 6/8) exterior extremely gravelly clay; moderate fine subangular blocky structure; firm; 1.0 fine roots throughout; 5.0 very fine interstitial and 10.0 very fine discontinuous tubular pores; 20 percent prominent pale brown (10YR 6/3), moist, silt coats on rock fragments and 50 percent prominent red (2.5YR 4/6), moist, clay films on faces of peds and in pores; 80 percent by volume subangular 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, unspecified; strongly acid, pH 5.4, hellige-truog. Lab sample # MU052956. continuous - phpvsfiid 139725; patchy - phpvsfiid 139726; continuous - phpvsfiid 139725; patchy - phpvsfiid 139726