IDENTIFIERS

  • Current Taxon Name (Soil Name): Knobtop
  • OSD
  • Series Extent
  • User Site ID: 2000MO221284M
  • User Pedon ID: 2000MO221284
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0022121
  • Print Date: 11/21/2024

    • 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: 37.2055667
  • Std. Longitude: -90.5252861
  • Datum: WGS84
  • Location Description: MDC Hughes Mountain Conservation Area
  • State: Missouri
  • County: MO221—Washington
  • MLRA: 116A—Ozark Highland
  • MLRA Soil Survey Area: NC-SPM—Springfield, Missouri
  • Non-MLRA Soil Survey Area: MO221—Washington County, Missouri

    • PEDON

  • Describers Name: DMS/ AD
  • Current Taxonomic Class: Fine-silty, mixed, active, mesic Aquic Hapludults
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Knobtop
  • PSC - 15 to 51 cm.
  • Classificaton Date - 7/31/2000
  • Sampled As Information:
  • Soil Name - Knobtop
  • Taxonomic Class - Loamy-skeletal Oxyaquic Hapludults
  • Taxon Kind - series
  • PSC - 15 to 66 cm.
  • Classificaton Date - 7/31/2000
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: acid igneous rock
  • Landscape: hills
  • Landform: hillslope
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Bedrock: rhyolite
  • Surface Fragments: 2.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/31/2000 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    15

    —

    —

    299

    —

    340

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 8 centimeters (0.0 to 3.1 inches); very dark grayish brown (10YR 3/2) gravelly silt loam; moderate fine subangular blocky, and moderate very fine subangular blocky, and weak fine granular structure; friable; 6.0 very fine and fine roots and 3.0 medium and coarse roots; 15 percent by volume 2-39-75 millimeter igneous, acid fragments; clear smooth boundary. Lab sample # MU022425
    E—8 to 15 centimeters (3.1 to 5.9 inches); brown (10YR 4/3) gravelly silt loam; moderate fine subangular blocky parts to moderate very fine subangular blocky structure; friable; 6.0 very fine and fine roots and 3.0 medium and coarse roots; 60 percent silt coats; 20 percent by volume 2-39-75 millimeter igneous, acid fragments; abrupt smooth boundary. Lab sample # MU022426
    Bt1—15 to 30 centimeters (5.9 to 11.8 inches); dark yellowish brown (10YR 4/4) very gravelly silt loam; moderate fine subangular blocky structure; friable; 3.0 very fine and fine roots and 1.0 medium and coarse roots; 15 percent clay films and 30 percent silt coats; 40 percent by volume 2-39-75 millimeter igneous, acid fragments; clear wavy boundary. Lab sample # MU022427
    Bt2—30 to 51 centimeters (11.8 to 20.1 inches); yellowish brown (10YR 5/4) very gravelly silt loam; moderate very fine subangular blocky structure; firm; 3.0 very fine and fine roots and 1.0 medium and coarse roots; 15 percent clay films and 30 percent silt coats; 50 percent by volume 2-39-75 millimeter igneous, acid fragments; clear smooth boundary. Lab sample # MU022428
    2Btx1—51 to 74 centimeters (20.1 to 29.1 inches); 85 percent brownish yellow (10YR 6/6) and 15 percent dark gray (10YR 4/1) extremely gravelly silt loam; weak fine prismatic parts to moderate very fine subangular blocky structure; very firm; 3.0 very fine and fine roots; 5 percent by volume 75-162-250 millimeter igneous, acid fragments and 60 percent by volume 2-39-75 millimeter igneous, acid fragments; clear smooth boundary. Lab sample # MU022429
    2Btx2—74 to 91 centimeters (29.1 to 35.8 inches); 80 percent grayish brown (10YR 5/2) and 20 percent brownish yellow (10YR 6/8) gravelly silty clay loam; moderate medium prismatic parts to weak fine platy structure; very firm; 1.0 very fine and fine roots; 1.0 interstitial pores; 20 percent by volume 2-39-75 millimeter igneous, acid fragments. Lab sample # MU022430
    2R—91 centimeters (35.8 inches); bedrock; fragments.