IDENTIFIERS

  • Current Taxon Name (Soil Name): Union
  • OSD
  • Series Extent
  • User Site ID: 1987MO161023M
  • User Pedon ID: 1987MO161023
  • Vegetation Plot ID: 1987MO161023
  • Transect:
  • User Transect ID - T1891
  • Transect Stop Number - 1
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M8716123
  • Print Date: 5/20/2024

    • 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: 38.1160556
  • Std. Longitude: -91.5869417
  • Datum: WGS84
  • Township: T39N
  • Range: R6W
  • Section: 9
  • PLSS Details: 1975 feet W and 2450 feet S of the NE corner
  • Location Description: 1,975 ft west and 2,450 ft south of the northeast corner of sec. 9, T. 39 N, R. 6 W.
  • Map Unit: 73136—Union silt loam, 1 to 3 percent slopes
  • State: Missouri
  • County: MO161—Phelps
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO161—Phelps County, Missouri
  • 7.5 Minute USGS Quad: 38091-A5—Rosati, Missouri

    • PEDON

  • Describers Name: D.S. & K.A.
  • Current Taxonomic Class: Fine, mixed, active, mesic Oxyaquic Fragiudalfs
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Union
  • PSC - 18 to 66 cm.
  • Classificaton Date - 11/16/2012
  • Classifier - J.R. Perkins
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Lebanon
  • Taxon Kind - series
  • PSC - 18 to 66 cm.
  • Classificaton Date - 7/21/1987
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified


    • SITE

  • Parent Material: loess over pedisediment over residuum
  • Landscape: hills
  • Landform: interfluve
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Geology: Pennsylvanian Undifferentiated formation of the Pennsylvanian Undifferentiated group.
  • Surface Fragments:
  • Benchmark Soil?: yes

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/21/1987 (actual site observation date)
  • Air Photo ID: E-2
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CARYA

    LOAR10

    QUAL

    QUST

    THUJA

    Carya

    Lolium arundinaceum

    Quercus alba

    Quercus stellata

    Thuja

    hybrid hickory

    tall fescue

    white oak

    post oak

    arborvitae

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    abrupt textural change

    fragipan

    noncoherent

    noncoherent

    18 - 18

    66 - 99

    - 0 -

    - 33 -

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

    ochric epipedon

    argillic horizon

    abrupt textural change

    redox depletions with chroma 2 or less

    lithologic discontinuity

    lithologic discontinuity

    0—18

    18—152

    18—18

    51—99

    66—99

    99—152

    —18—

    —18—

    —0—

    —48—

    —33—

    —53—
    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

    2

    —

    —

    302

    —

    340

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2), very pale brown (10YR 7/3), dry; silt loam; weak very fine granular structure; very friable; 0.5 fine roots; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU014422
    Bt1—18 to 36 centimeters (7.1 to 14.2 inches); dark yellowish brown (10YR 4/4) silty clay loam; strong very fine subangular blocky structure; firm; few (0.5) medium roots and few (0.5) fine roots; 60 percent prominent clay films on faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU014423
    Bt2—36 to 51 centimeters (14.2 to 20.1 inches); brown (7.5YR 4/4) silty clay; 1 percent pale brown (10YR 6/3) fine distinct mottles; strong very fine subangular blocky structure; firm; few (0.5) medium roots and few (0.5) fine roots and few (0.5) coarse roots; 60 percent prominent clay films on faces of peds; fragments; very strongly acid, pH 4.5, hellige-truog; gradual wavy boundary. Lab sample # MU014424
    Bt3—51 to 66 centimeters (20.1 to 26.0 inches); yellowish brown (10YR 5/4) silty clay; strong very fine subangular blocky structure; firm; few (0.5) fine roots; 60 percent prominent clay films on faces of peds; 10 percent medium distinct strong brown (7.5YR 5/6), moist, masses of oxidized iron and 10 percent fine faint grayish brown (10YR 5/2), moist, iron depletions and 25 percent medium distinct dark grayish brown (10YR 4/2), moist, iron depletions; 10 percent by volume indurated 2-39-75 millimeter chert fragments; extremely acid, pH 4.4, hellige-truog; gradual wavy boundary. Lab sample # MU014425
    2Btx—66 to 99 centimeters (26.0 to 39.0 inches); dark yellowish brown (10YR 4/4) very gravelly silt loam; strong very coarse prismatic parts to weak fine subangular blocky structure; very firm; brittle; few (0.5) fine roots in cracks; skeletans over cutans and 35 percent prominent clay films on faces of peds; 10 percent distinct iron depletions; 55 percent by volume indurated 2-39-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog; gradual wavy boundary. Lab sample # MU014426. The gray seams are from 1 to 2 inches (avg. 1.5 in.) wide. Prizms vary from 5 to 11 inches (8 in. avg.) across. Gray seams are 10YR 6/1 with 7.5YR 4/6 and 5/8 rind colors. 82 percent brittle.
    3Bt1—99 to 127 centimeters (39.0 to 50.0 inches); dark red (2.5YR 3/6) gravelly clay; 1 percent yellowish brown (10YR 5/6) fine prominent mottles; strong very fine subangular blocky structure; firm; few (0.5) fine roots; 60 percent prominent clay films on faces of peds; 20 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; diffuse wavy boundary. Lab sample # MU014427
    3Bt2—127 to 152 centimeters (50.0 to 59.8 inches); red (2.5YR 4/6) clay; 21 percent yellowish brown (10YR 5/6) coarse prominent mottles; strong very fine subangular blocky structure; firm; few (0.5) fine roots; 60 percent prominent clay films on faces of peds; 5 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU014428