IDENTIFIERS

  • Current Taxon Name (Soil Name): Weld
  • OSD
  • Series Extent
  • User Site ID: S2010CO121044AWS
  • User Pedon ID: S2010CO121009
  • Vegetation Plot ID: S2010CO121044AWS
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Pedon # - 10N0965
  • NCSS Pedon Lab Data NASIS Record ID - 36937
  • Print Date: 9/24/2024

    • 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: 39.9419444
  • Std. Longitude: -103.6978611
  • Datum: WGS84
  • Township: 1S
  • Range: 56W
  • Section: 30
  • PLSS Details: 2,990 feet West and 896 feet South from the northeast 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 #: 44
  • Sampled As Information:
  • Soil Name - Weld
  • Taxonomic Class - Fine, smectitic, mesic Aridic Argiustolls
  • PSC - 15 to 65 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 - other grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - partly cloudy
  • Current Air Temp - 18
    • 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 % % % % % % % % % % % % %

    Bt2

    Bt2

    Btk

    Btk

    Bk1

    Bk1

    Bk2

    Bk2

    C

    C

    32

    32

    54

    54

    97

    97

    132

    132

    192

    192

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    97

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    132

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    192

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    220

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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

    Bt2

    Bt2

    Btk

    Btk

    Bk1

    Bk1

    Bk2

    Bk2

    C

    C

    32

    32

    54

    54

    97

    97

    132

    132

    192

    192

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    54

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    97

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    132

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    192

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    220

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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 %

    Bt2

    Bt2

    Btk

    Btk

    Bk1

    Bk1

    Bk2

    Bk2

    C

    C

    32

    32

    54

    54

    97

    97

    132

    132

    192

    192

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    54

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    97

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    132

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    192

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    220

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    7

    7

    13

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    13

    8

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

    BRTE

    CIRSI

    DESCU

    LASE

    MEOF

    PASM

    SPCR

    Bromus tectorum

    Cirsium

    Descurainia

    Lactuca serriola

    Melilotus officinalis

    Pascopyrum smithii

    Sporobolus cryptandrus

    cheatgrass

    thistle

    tansymustard

    prickly lettuce

    sweetclover

    western wheatgrass

    sand dropseed

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

    mollic epipedon

    argillic horizon

    0—32

    15—97

    —32—

    —82—
    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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    1437.4

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    203

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    Ap—0 to 15 centimeters (0.0 to 5.9 inches); brown (7.5YR 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; 4.0 very fine roots throughout and 3.0 fine roots throughout; fragments; noneffervescent, by hcl, 3n; slightly alkaline, pH 7.6, phenol red; clear smooth boundary. Lab sample # 10N04562, 10N04569; observed in trench
    Bt1—15 to 32 centimeters (5.9 to 12.6 inches); dark grayish brown (10YR 4/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; silty clay; 5 percent sand; 50 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; 3.0 very fine roots throughout and 3.0 fine roots throughout; 15 percent prominent clay films on all faces of peds; ; fragments; noneffervescent, by hcl, 3n; slightly alkaline, pH 7.8, phenol red; clear smooth boundary. Lab sample # 10N04563; observed in trench. continuous - phpvsfiid 682654; continuous - phpvsfiid 682654
    Bt2—32 to 54 centimeters (12.6 to 21.3 inches); 70 percent dark grayish brown (10YR 4/2) broken face and 30 percent brown (10YR 5/3) broken face, 70 percent dark brown (10YR 3/3) broken face and 30 percent brown (10YR 4/3) broken face, moist; silty clay; 5 percent sand; 50 percent silt; 45 percent clay; strong 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; 3.0 very fine roots throughout and 2.0 fine roots throughout; 12 percent prominent very dark grayish brown (10YR 3/2) clay films on all faces of peds; carbonate, finely disseminated throughout; fragments; strong effervescence, by hcl, 3n; strongly alkaline, pH 8.8, thymol-blue; gradual wavy boundary. Lab sample # 10N04564; observed in trench. continuous - phpvsfiid 682655; continuous - phpvsfiid 682655
    Btk—54 to 97 centimeters (21.3 to 38.2 inches); brown (10YR 5/3) broken face, brown (10YR 4/3) broken face, moist; silty clay loam; 16 percent sand; 54 percent silt; 32 percent clay; moderate medium and coarse prismatic parts to strong fine and medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; Ksat of 2.82 um/s; moderately 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 8.8, thymol-blue; gradual wavy boundary. Lab sample # 10N04565; observed in trench. discontinuous - phpvsfiid 682656; discontinuous - phpvsfiid 682656
    Bk1—97 to 132 centimeters (38.2 to 52.0 inches); brown (10YR 5/3) broken face, dark yellowish brown (10YR 4/4) broken face, moist; silty clay loam; 18 percent sand; 54 percent silt; 28 percent clay; weak coarse prismatic parts to moderate medium and coarse subangular blocky structure; hard, friable, moderately sticky, moderately 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 and 1 percent medium irregular carbonate masses on faces of peds; fragments; strong effervescence, by hcl, 3n; strongly alkaline, pH 8.6, thymol-blue; gradual wavy boundary. Lab sample # 10N04566; observed in trench
    Bk2—132 to 192 centimeters (52.0 to 75.6 inches); brown (10YR 5/3) broken face, dark yellowish brown (10YR 4/4) broken face, moist; silt loam; 24 percent sand; 52 percent silt; 24 percent clay; weak coarse prismatic parts to moderate medium and coarse subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; Ksat of 9.17 um/s; moderate 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 8.6, thymol-blue; gradual wavy boundary. Lab sample # 10N04567; observed in trench
    C—192 to 220 centimeters (75.6 to 86.6 inches); brown (10YR 5/3) broken face, dark yellowish brown (10YR 4/4) broken face, moist; silt loam; 26 percent sand; 52 percent silt; 22 percent clay; weak medium and coarse subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; Ksat of 9.17 um/s; moderate permeability; carbonate, finely disseminated throughout and 1 percent fine irregular carbonate masses on faces of peds; fragments; slight effervescence, by hcl, 3n; strongly alkaline, pH 8.6, thymol-blue. Lab sample # 10N04568; observed in trench