IDENTIFIERS

  • Current Taxon Name (Soil Name): Haxtun
  • OSD
  • Series Extent
  • User Site ID: S2016CO123003
  • User Pedon ID: S2016CO123003
  • Vegetation Plot ID: S2016CO123003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 16N0627
  • User Project ID: CPER_010_NEON
  • Project Name: Central Plains Experimental Range
  • Print Date: 12/9/2025

    • 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: 40.8255833
  • Std. Longitude: -104.6952778
  • Datum: WGS84
  • Township: 10N
  • Range: 65W
  • Section: 20
  • PLSS Details: 240 feet east and 410 feet south from the northwest corner
  • Location Description: Soil pit located 10.5 meters at a 235 degree angle from the southwest corner of the 20m x 20m plot to the center of the soil pit.
  • Map Unit: 73—Vona sandy loam, 0 to 3 percent slopes
  • State: Colorado
  • County: CO123—Weld
  • MLRA: 67B—Central High Plains, Southern Part
  • MLRA Soil Survey Area: NW-FTM—Fort Morgan, Colorado
  • Non-MLRA Soil Survey Area: CO617—Weld County, Colorado, Northern Part
  • 7.5 Minute USGS Quad: 40104-G6—Eastman Creek South, Colorado

    • PEDON

  • Describers Name: Andy Steinert
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, mesic Pachic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: research site
  • Pedon Record Orgin: NASIS
  • Pedon #: 3
  • Sampled As Information:
  • Soil Name - Haxtun
  • Taxonomic Class - Fine-loamy, mixed, superactive, mesic Pachic Argiustolls
  • Taxon Kind - series
  • PSC - 15 to 65 cm.
  • Classificaton Date - 3/16/2016
  • Classifier - Andy Steinert
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: eolian deposits over old alluvium
  • Landform: plain
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Ksat Class Upper: moderately high
  • Ksat Class Lower: very high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no
  • RaCA Information:
  • RaCA Site ID - CPER_018
  • DSP Plot ID - SW
  • Plot Baseline Azimuth - 235
  • Plot Baseline Length - 11
  • Plot Width - 20
  • Plot/Site Set Up By - Center of pit
  • Plot or Site Recorder - Andy Steinert

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/16/2016 (actual site observation date)
  • Data Collector: Andy Steinert
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - overcast
  • Current Air Temp - 4
    • 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

    72

    83

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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

    72

    83

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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

    72

    83

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    6

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

    ARIST

    BOGR2

    EREF

    HECO26

    OPPO

    SPCR

    Aristida

    Bouteloua gracilis

    Eriogonum effusum

    Hesperostipa comata

    Opuntia polyacantha

    Sporobolus cryptandrus

    threeawn

    blue grama

    spreading buckwheat

    needle and thread

    plains pricklypear

    sand dropseed

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

    abrupt textural change

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    83 -

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

    mollic epipedon

    argillic horizon

    secondary carbonates

    abrupt textural change

    0—72

    15—83

    72—83

    83—

    —72—

    —68—

    —11—

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    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

    0.5

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    1633

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    135

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    A—0 to 15 centimeters (0.0 to 5.9 inches); dark grayish brown (10YR 4/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; sandy loam; 75 percent sand; 15 percent silt; 10 percent clay; weak fine granular, and weak medium subangular blocky, and weak coarse subangular blocky structure; soft, very friable, nonsticky, nonplastic; Ksat of 28.225 um/s; moderately rapid permeability; common (2.0) very fine roots throughout and common (2.0) fine roots throughout and few (0.5) coarse roots throughout; few (0.5) very fine vesicular pores; carbonate, finely disseminated throughout; 3 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.2, pH indicator solutions; abrupt smooth boundary. Lab sample # 16N02702; observed in pit, small
    Bt1—15 to 40 centimeters (5.9 to 15.7 inches); brown (10YR 4/3) broken face, dark brown (10YR 3/3) broken face, moist; sandy loam; 72 percent sand; 14 percent silt; 14 percent clay; moderate coarse subangular blocky, and weak medium prismatic parts to moderate medium subangular blocky structure; moderately hard, friable, nonsticky, nonplastic; Ksat of 28.225 um/s; moderately rapid permeability; common (2.0) very fine roots throughout and common (2.0) fine roots throughout and few (0.5) coarse roots throughout; common (1.0) very fine vesicular pores; 5 percent faint clay films on vertical faces of peds and 10 percent faint clay bridges on all faces of peds; 1 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.2, pH indicator solutions; gradual wavy boundary. Lab sample # 16N02703; observed in pit, small. patchy - phpvsfiid 1555276; patchy - phpvsfiid 1555277; patchy - phpvsfiid 1555276; patchy - phpvsfiid 1555277
    Bt2—40 to 72 centimeters (15.7 to 28.3 inches); very dark grayish brown (10YR 3/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; sandy clay loam; 60 percent sand; 8 percent silt; 32 percent clay; strong medium prismatic parts to strong medium angular blocky, and strong coarse prismatic parts to strong coarse angular blocky structure; extremely hard, friable, moderately sticky, moderately plastic; Ksat of 2.82 um/s; moderately slow permeability; common (1.0) very fine roots throughout and common (1.0) fine roots throughout and few (0.5) coarse roots throughout; common (1.0) very fine vesicular and few (0.5) fine vesicular pores; 45 percent prominent clay films on all faces of peds; 2 percent by volume nonflat subrounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.3, pH indicator solutions; clear wavy boundary. Lab sample # 16N02704; observed in pit, small. continuous - phpvsfiid 1555278; continuous - phpvsfiid 1555278
    Btk—72 to 83 centimeters (28.3 to 32.7 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; sandy clay loam; 60 percent sand; 11 percent silt; 29 percent clay; moderate medium prismatic parts to moderate medium angular blocky, and moderate coarse prismatic parts to moderate coarse angular blocky structure; very hard, friable, moderately sticky, slightly plastic; Ksat of 2.82 um/s; moderately slow permeability; common (1.0) very fine roots throughout and common (1.0) fine roots throughout and very few (0.5) coarse roots throughout; common (3.0) very fine tubular and common (2.0) fine tubular pores; 10 percent distinct clay films on vertical faces of peds; 1 percent fine threadlike carbonate masses on faces of peds and 2 percent medium irregular carbonate masses on faces of peds; 12 percent by volume nonflat subrounded indurated 2-5-75 millimeter mixed fragments observed by visual inspection method; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH indicator solutions; clear wavy boundary. Lab sample # 16N02705; observed in pit, small. discontinuous - phpvsfiid 1555279; discontinuous - phpvsfiid 1555279
    2C—83 to 100 centimeters (32.7 to 39.4 inches); brown (10YR 5/3) broken face, brown (10YR 4/3) broken face, moist; extremely gravelly loamy sand; 85 percent sand; 11 percent silt; 4 percent clay; single grain; loose, loose, nonsticky, nonplastic; Ksat of 141.14 um/s; very rapid permeability; few (0.5) very fine roots throughout; 5 percent coarse irregular carbonate concretions on bottom of rock fragments and 5 percent medium irregular carbonate concretions on bottom of rock fragments; 4 percent by volume nonflat rounded indurated 76-100-250 millimeter mixed fragments observed by visual inspection method and 35 percent by volume nonflat rounded indurated 21-30-75 millimeter mixed fragments observed by visual inspection method and 40 percent by volume nonflat rounded indurated 2-5-20 millimeter mixed fragments observed by visual inspection method; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH indicator solutions. Lab sample # 16N02706; observed in pit, small