IDENTIFIERS

  • Current Taxon Name (Soil Name): Sunnyside
  • OSD
  • Series Extent
  • User Site ID: S2007DC001001
  • User Pedon ID: 07DC001001
  • Vegetation Plot ID: S2007DC001001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 07N0504
  • NCSS Pedon Lab Data NASIS Record ID - 19034
  • Print Date: 11/26/2024

    • 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: 38.9148598
  • Std. Longitude: -76.9618301
  • Datum: WGS84
  • Location Description: In Maple Garden at U.S. National Arboretum.
  • Map Unit: SmB—Sunnyside fine sandy loam, 0 to 8 percent slopes
  • State: District of Columbia
  • County: DC001—District of Columbia
  • MLRA: 149A—Northern Coastal Plain
  • Non-MLRA Soil Survey Area: DC001—District of Columbia

    • PEDON

  • Describers Name: Earles, Eddie
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Sampled As Information:
  • Soil Name - Sunnyside
  • PSC - 28 to 78 cm.
  • Classificaton Date - 4/20/2007
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: coastal plain
  • Landform: interfluve
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Silt-clay Facies (?) member of the Potomac Group group.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/20/2007 (actual site observation date)
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - other grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - sunny
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACRU

    ACSA3

    POA

    Acer rubrum

    Acer saccharum

    Poa

    red maple

    sugar maple

    bluegrass

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

    ochric epipedon

    argillic horizon

    0—28

    28—79

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    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    4/20/2007

    8

    —

    13
    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

    3

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    17

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    Ap—0 to 9 centimeters (0.0 to 3.5 inches); dark brown (10YR 3/3) crushed loam; 13 percent clay; moderate medium subangular blocky parts to moderate fine granular structure; friable, moderately sticky, moderately plastic; 1.0 very fine roots throughout and 2.0 medium roots throughout and 1.0 fine roots throughout and 2.0 coarse roots throughout; 1.0 very fine tubular and 0.5 fine tubular pores; fragments; slightly acid, pH 6.2, hellige-truog; abrupt wavy boundary. Lab sample # 07N03277; slightly moist when described; observed in pit, large or quarry
    BA—9 to 28 centimeters (3.5 to 11.0 inches); 40 percent reddish brown (5YR 4/4) broken face and 40 percent yellowish red (5YR 4/6) broken face loam; 19 percent clay; 20 percent brown (7.5YR 4/3) medium faint spherical mottles; moderate medium subangular blocky structure; firm, slightly sticky, moderately plastic; 0.1 very fine roots throughout; 1.0 medium tubular and 1.0 fine tubular and 1.0 coarse tubular pores; 15 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; fragments; very strongly acid, pH 4.8, hellige-truog; abrupt smooth boundary. Lab sample # 07N03278; moist when described; observed in pit, large or quarry. discontinuous - phpvsfiid 363583; discontinuous - phpvsfiid 363583
    Bt1—28 to 59 centimeters (11.0 to 23.2 inches); yellowish red (5YR 4/6) broken face clay loam; 28 percent clay; moderate coarse subangular blocky structure; friable, moderately sticky, moderately plastic; 0.1 very fine roots throughout; 0.1 fine tubular pores; 45 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; fragments; very strongly acid, pH 4.5, hellige-truog; abrupt smooth boundary. Lab sample # 07N03279; moist when described; observed in pit, large or quarry. discontinuous - phpvsfiid 363584; discontinuous - phpvsfiid 363584
    Bt2—59 to 79 centimeters (23.2 to 31.1 inches); 50 percent reddish brown (5YR 4/4) broken face and 50 percent yellowish red (5YR 4/6) broken face sandy clay loam; 24 percent clay; weak medium subangular blocky parts to weak fine subangular blocky structure; friable, slightly sticky, slightly plastic; 0.1 very fine roots throughout; 0.1 fine tubular pores; 45 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; fragments; very strongly acid, pH 4.5, hellige-truog; abrupt wavy boundary. Lab sample # 07N03280; moist when described; observed in pit, large or quarry. discontinuous - phpvsfiid 363588; discontinuous - phpvsfiid 363588
    E and Bt3—79 to 145 centimeters (31.1 to 57.1 inches); yellowish red (5YR 4/6) broken face sandy loam; 11 percent clay; weak very coarse prismatic structure; yellowish red (5YR 4/6), moist, clay bridges between sand grains; fragments; very strongly acid, pH 4.5, hellige-truog. Lab sample # 07N03281; moist when described;. The E and Bt3 horizon was originally described in the field as a BC1. This horizon was horizontally stratified and consisted of 6 strata ranging from 7 to 10 cm in thickness. 2 of these were field-textured as loam, and the other 4 were field-textured as sandy loam. The sand fraction in the sandy loam strata was noticeably coarser than the sand fraction of the loam strata. We sampled this horizon in bulk, crushed and mixed, and as subsamples of the sandy loam and loam portions, taking 5 clods (bulk density) from the sandy loam portions and 3 clods from the loam portions. During subsequent monolith work, the loam portions of this horizon were found to contain well-expressed clay films, indicative of clay illuviation, and it was decided to redescribe this horizon as an E and Bt horizon.
    E and Bt3—79 to 145 centimeters (31.1 to 57.1 inches); yellowish red (5YR 5/6) broken face loam; 26 percent clay; weak very coarse prismatic parts to strong coarse subangular blocky structure; very friable, moderately sticky, moderately plastic; 45 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; fragments; very strongly acid, pH 4.5, hellige-truog; abrupt smooth boundary. Lab sample # 07N03281; wet, non-satiated when described; observed in pit, large or quarry. The E and Bt3 horizon was originally described in the field as a BC1. This horizon was horizontally stratified and consisted of 6 strata ranging from 7 to 10 cm in thickness. 2 of these were field-textured as loam, and the other 4 were field-textured as sandy loam. The sand fraction in the sandy loam strata was noticeably coarser than the sand fraction of the loam strata. We sampled this horizon in bulk, crushed and mixed, and as subsamples of the sandy loam and loam portions, taking 5 clods (bulk density) from the sandy loam portions and 3 clods from the loam portions. During subsequent monolith work, the loam portions of this horizon were found to contain well-expressed clay films, indicative of clay illuviation, and it was decided to redescribe this horizon as an E and Bt horizon.; continuous - phpvsfiid 363589; continuous - phpvsfiid 363589
    BC1—145 to 160 centimeters (57.1 to 63.0 inches); yellowish red (5YR 4/6) crushed sandy loam; 12 percent clay; weak very coarse prismatic structure; very friable, nonsticky, nonplastic; yellowish red (5YR 4/6), moist, clay bridges between sand grains; fragments; very strongly acid, pH 4.5, hellige-truog; abrupt smooth boundary. Lab sample # 07N03282; wet, non-satiated when described; observed in pit, large or quarry
    BC2—160 to 175 centimeters (63.0 to 68.9 inches); yellowish red (5YR 4/6) broken face sandy loam; 10 percent clay; weak very coarse prismatic structure; very friable, nonsticky, nonplastic; yellowish red (5YR 4/6), moist, clay bridges between sand grains; fragments; very strongly acid, pH 4.5, hellige-truog; abrupt smooth boundary. Lab sample # 07N03283; wet when described; observed in pit, large or quarry
    BC3—175 centimeters (68.9 inches); yellowish red (5YR 4/6) broken face sandy loam; structureless massive; very friable, slightly sticky, slightly plastic; fragments. Lab sample # 07N03284; wet when described; observed in pit, large or quarry