IDENTIFIERS

  • Current Taxon Name (Soil Name): Weld
  • OSD
  • Series Extent
  • User Site ID: S2010CO121043AWS
  • User Pedon ID: S2010C0121005
  • Vegetation Plot ID: S2010CO121043AWS
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Pedon # - 10N0961
  • NCSS Pedon Lab Data NASIS Record ID - 36933
  • 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: 39.9483611
  • Std. Longitude: -103.7029167
  • Datum: WGS84
  • Township: 1S
  • Range: 56W
  • Section: 19
  • PLSS Details: 1,438 feet North and 906 feet East from the southwest corner
  • Map Unit: 78—Weld silt loam, 0 to 3 percent slopes
  • State: Colorado
  • County: CO121—Washington
  • MLRA: 67B—Central High Plains, Southern Part
  • MLRA Soil Survey Area: NW-FTM—Fort Morgan, Colorado
  • Non-MLRA Soil Survey Area: CO121—Washington County, Colorado
  • 7.5 Minute USGS Quad: 39103-H6—Woodrow NW, Colorado

    • PEDON

  • Describers Name: Andy Steinert, Mike Moore, Chad Remley, Bill Wehmueller
  • Current Taxonomic Class: Fine, smectitic, mesic Aridic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: PedonPC
  • Pedon #: 43
  • Sampled As Information:
  • Soil Name - Weld
  • Taxonomic Class - Fine, smectitic, mesic Aridic Argiustolls
  • PSC - 17 to 67 cm.
  • Classificaton Date - 5/20/2010
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess
  • Landform: plain
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/20/2010 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - overcast
  • Current Air Temp - 16
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Btk1

    Btk1

    Btk2

    Btk2

    Bk

    Bk

    C

    C

    33

    33

    56

    56

    114

    114

    170

    170

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    56

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    114

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    170

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    212

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Btk1

    Btk1

    Btk2

    Btk2

    Bk

    Bk

    C

    C

    33

    33

    56

    56

    114

    114

    170

    170

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    56

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    114

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    170

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    212

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Btk1

    Btk1

    Btk2

    Btk2

    Bk

    Bk

    C

    C

    33

    33

    56

    56

    114

    114

    170

    170

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    56

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    114

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    170

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    212

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    9

    9

    12

    12

    9

    9

    7

    7

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    BRTE

    CIRSI

    HIPPU

    MEOF

    PASM

    SEFLF

    SPCR

    TRPO

    Bromus tectorum

    Cirsium

    Hippuris

    Melilotus officinalis

    Pascopyrum smithii

    Senecio flaccidus var. flaccidus

    Sporobolus cryptandrus

    Tragopogon porrifolius

    cheatgrass

    thistle

    mare's-tail

    sweetclover

    western wheatgrass

    threadleaf ragwort

    sand dropseed

    salsify

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

    mollic epipedon

    argillic horizon

    0—33

    17—114

    —33—

    —97—
    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

    1

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    1427.4

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    320

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    Ap—0 to 17 centimeters (0.0 to 6.7 inches); grayish brown (10YR 5/2) broken face, dark brown (7.5YR 3/2) broken face, moist; silty clay loam; 17 percent sand; 55 percent silt; 28 percent clay; weak fine granular, and weak fine subangular blocky structure; hard, friable, moderately sticky, slightly plastic; Ksat of 2.82 um/s; moderately slow permeability; 3.0 very fine roots throughout and 3.0 fine roots throughout; fragments; noneffervescent, by hcl, 3n; neutral, pH 7.2, phenol red; clear smooth boundary. Lab sample # 10N04540, 10N04546; observed in trench
    Bt—17 to 33 centimeters (6.7 to 13.0 inches); brown (10YR 4/3) broken face, dark brown (7.5YR 3/2) broken face, moist; silty clay; 10 percent sand; 45 percent silt; 45 percent clay; strong fine and medium prismatic parts to strong fine and medium angular blocky structure; extremely hard, firm, very sticky, very plastic; Ksat of 0.915 um/s; slow permeability; 2.0 very fine roots throughout and 3.0 fine roots throughout; 10 percent prominent clay films on all faces of peds; fragments; noneffervescent, by hcl, 3n; slightly alkaline, pH 7.6, phenol red; clear wavy boundary. Lab sample # 10N04541; observed in trench. continuous - phpvsfiid 682651; continuous - phpvsfiid 682651
    Btk1—33 to 56 centimeters (13.0 to 22.0 inches); dark yellowish brown (10YR 4/4) broken face, brown (10YR 4/3) broken face, moist; silty clay; 13 percent sand; 45 percent silt; 42 percent clay; strong medium prismatic parts to strong fine and medium angular blocky structure; very hard, firm, very sticky, moderately plastic; Ksat of 0.915 um/s; slow permeability; 2.0 very fine roots throughout and 2.0 fine roots throughout; 8 percent distinct clay films on all faces of peds; carbonate, finely disseminated throughout and 2 percent fine threadlike carbonate masses on faces of peds; fragments; strong effervescence, by hcl, 3n; strongly alkaline, pH 8.6, thymol-blue; clear wavy boundary. Lab sample # 10N04542; observed in trench. continuous - phpvsfiid 682652; continuous - phpvsfiid 682652
    Btk2—56 to 114 centimeters (22.0 to 44.9 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; silty clay loam; 16 percent sand; 55 percent silt; 29 percent clay; moderate medium and coarse prismatic parts to moderate medium and coarse angular blocky structure; hard, friable, moderately sticky, moderately plastic; Ksat of 2.82 um/s; moderately slow permeability; 2.0 very fine roots throughout; 2 percent faint clay films on vertical faces of peds; carbonate, finely disseminated throughout and 3 percent fine threadlike carbonate masses on faces of peds; fragments; strong effervescence, by hcl, 3n; strongly alkaline, pH 8.6, thymol-blue; gradual wavy boundary. Lab sample # 10N04543; observed in trench. patchy - phpvsfiid 682653; patchy - phpvsfiid 682653
    Bk—114 to 170 centimeters (44.9 to 66.9 inches); pale brown (10YR 6/3) broken face, brown (10YR 5/3) broken face, moist; silty clay loam; 16 percent sand; 55 percent silt; 29 percent clay; weak coarse prismatic parts to moderate medium and coarse subangular blocky structure; hard, friable, moderately sticky, slightly plastic; Ksat of 2.82 um/s; moderately slow permeability; 1.0 very fine roots throughout; carbonate, finely disseminated throughout and 2 percent fine threadlike carbonate masses on faces of peds; fragments; strong effervescence, by hcl, 3n; strongly alkaline, pH 8.8, thymol-blue; gradual wavy boundary. Lab sample # 10N04544; observed in trench
    C—170 to 212 centimeters (66.9 to 83.5 inches); pale brown (10YR 6/3) broken face, yellowish brown (10YR 5/4) broken face, moist; silt loam; 27 percent sand; 50 percent silt; 23 percent clay; weak medium and coarse subangular blocky, and weak coarse prismatic structure; slightly hard, friable, moderately sticky, slightly plastic; Ksat of 9.17 um/s; moderate permeability; carbonate, finely disseminated throughout and 1 percent fine irregular gypsum crystals, unspecified on faces of peds and 1 percent fine irregular salt crystals on faces of peds; fragments; strong effervescence, by hcl, 3n; strongly alkaline, pH 9.0, thymol-blue. Lab sample # 10N04545; observed in trench