IDENTIFIERS

  • Current Taxon Name (Soil Name): Weld
  • OSD
  • Series Extent
  • User Site ID: S2010CO121042AWS
  • User Pedon ID: S2010CO121001
  • Vegetation Plot ID: S2010CO121042AWS
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 10N0957
  • NCSS Pedon Lab Data NASIS Record ID - 36929
  • Print Date: 2/16/2025

    • 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: 39.6685833
  • Std. Longitude: -103.1410278
  • Datum: WGS84
  • Township: 4S
  • Range: 51W
  • Section: 31
  • PLSS Details: 208 feet East and 193 feet South from the northwest 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-F2—Anton, Colorado

    • PEDON

  • Describers Name: Andy Steinert, Mike Moore, Chad Remley, Steve Park
  • 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 #: 42
  • Sampled As Information:
  • Soil Name - Weld
  • Taxonomic Class - Fine, smectitic, mesic Aridic Argiustolls
  • PSC - 11 to 61 cm.
  • Classificaton Date - 5/18/2010
  • 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: 5/18/2010 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - hayland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - partly cloudy
  • 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 % % % % % % % % % % % % %

    Btk

    Btk

    Bk1

    Bk1

    Bk2

    Bk2

    48

    48

    86

    86

    134

    134

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    86

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    134

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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

    Btk

    Btk

    Bk1

    Bk1

    Bk2

    Bk2

    48

    48

    86

    86

    134

    134

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    86

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    134

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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 %

    Btk

    Btk

    Bk1

    Bk1

    Bk2

    Bk2

    48

    48

    86

    86

    134

    134

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    86

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    134

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    220

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

    BOCU

    BRTE

    HIPPU

    MEOF

    PASM

    Bouteloua curtipendula

    Bromus tectorum

    Hippuris

    Melilotus officinalis

    Pascopyrum smithii

    sideoats grama

    cheatgrass

    mare's-tail

    sweetclover

    western wheatgrass

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

    mollic epipedon

    argillic horizon

    0—48

    11—86

    —48—

    —75—
    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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    1471.6

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    225

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    Ap—0 to 11 centimeters (0.0 to 4.3 inches); brown (7.5YR 4/2) broken face, dark brown (7.5YR 3/2) broken face, moist; silty clay loam; 10 percent sand; 58 percent silt; 32 percent clay; weak fine granular, and weak fine subangular blocky structure; hard, friable, moderately sticky, moderately 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; slightly alkaline, pH 7.6, phenol red; clear smooth boundary. Lab sample # 10N04520, 10N04527; observed in trench
    Bt1—11 to 23 centimeters (4.3 to 9.1 inches); very dark grayish brown (10YR 3/2) broken face, very dark brown (10YR 2/2) broken face, moist; silty clay; 5 percent sand; 50 percent silt; 45 percent clay; weak fine prismatic, and moderate fine and medium angular blocky structure; very 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; 10 percent distinct clay films on all faces of peds; fragments; noneffervescent, by hcl, 3n; slightly alkaline, pH 7.6, phenol red; clear smooth boundary. Lab sample # 10N04521; observed in trench. continuous - phpvsfiid 682648; continuous - phpvsfiid 682648
    Bt2—23 to 48 centimeters (9.1 to 18.9 inches); 70 percent grayish brown (10YR 5/2) broken face and 30 percent dark grayish brown (10YR 4/2) broken face, 70 percent dark brown (10YR 3/3) broken face and 30 percent very dark brown (10YR 2/2) broken face, moist; silty clay; 5 percent sand; 47 percent silt; 48 percent clay; strong medium and coarse prismatic parts to strong fine and medium angular blocky structure; very 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; 10 percent distinct clay films on all faces of peds; fragments; noneffervescent, by hcl, 3n; slightly alkaline, pH 7.6, phenol red; gradual wavy boundary. Lab sample # 10N04522; observed in trench. continuous - phpvsfiid 682649; continuous - phpvsfiid 682649
    Btk—48 to 86 centimeters (18.9 to 33.9 inches); light gray (10YR 7/2) broken face, brown (10YR 5/3) broken face, moist; silty clay loam; 10 percent sand; 58 percent silt; 32 percent clay; moderate medium prismatic parts to moderate fine and medium angular blocky structure; hard, friable, moderately sticky, moderately plastic; Ksat of 2.82 um/s; moderately slow permeability; 3.0 very fine roots throughout and 2.0 fine roots throughout; 4 percent distinct clay films on all faces of peds; carbonate, finely disseminated throughout and 1 percent fine threadlike carbonate masses on faces of peds and 1 percent fine and medium irregular carbonate masses on faces of peds; fragments; strong effervescence, by hcl, 3n; moderately alkaline, pH 8.2, thymol-blue; gradual wavy boundary. Lab sample # 10N04523; observed in trench. discontinuous - phpvsfiid 682650; discontinuous - phpvsfiid 682650
    Bk1—86 to 134 centimeters (33.9 to 52.8 inches); light gray (10YR 7/2) broken face, brown (10YR 5/3) broken face, moist; silt loam; 20 percent sand; 56 percent silt; 24 percent clay; moderate medium and coarse subangular blocky structure; hard, friable, moderately sticky, moderately plastic; Ksat of 9.17 um/s; moderate permeability; 3.0 very fine roots throughout and 2.0 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 # 10N04524; observed in trench
    Bk2—134 to 220 centimeters (52.8 to 86.6 inches); light gray (10YR 7/2) broken face, yellowish brown (10YR 5/4) broken face, moist; silt loam; 25 percent sand; 57 percent silt; 18 percent clay; weak coarse prismatic parts to weak medium and coarse angular blocky structure; 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. Lab sample # 10N04525; observed in trench