IDENTIFIERS

  • Current Taxon Name (Soil Name): Rocky Ford
  • OSD
  • Series Extent
  • User Site ID: S11CO099003
  • User Pedon ID: S2011CO099003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 11N0415
  • NCSS Pedon Lab Data NASIS Record ID - 43101
  • 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: 38.0553889
  • Std. Longitude: -102.2453889
  • Datum: WGS84
  • Township: 23 S.
  • Range: 43 W.
  • Section: 15
  • PLSS Details: 350 feet east and 500 feet south of the NW corner
  • Location Description: About 3 miles east and 0.5 miles south of Granada, Colorado.
  • Map Unit: RoA—Rocky Ford clay loam, 0 to 1 percent slopes
  • State: Colorado
  • County: CO099—Prowers
  • MLRA: 67B—Central High Plains, Southern Part
  • MLRA Soil Survey Area: NW-PUE—Pueblo, Colorado
  • Non-MLRA Soil Survey Area: CO099—Prowers County, Colorado
  • 7.5 Minute USGS Quad: 38102-A2—Holly West, Colorado

    • PEDON

  • Describers Name: Lee A. Neve, Larua Craven, Chad Remley, Wm. Wehmueller
  • Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Gypsic Haplustepts
  • Current Taxon Kind: series
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: PedonPC
  • Pedon #: 464
  • Sampled As Information:
  • Soil Name - Rocky Ford
  • Taxonomic Class - Fine-silty, mixed, superactive, mesic Gypsic Haplustepts
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/23/2011
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium
  • Landform: terrace
  • Geomorphic Component Terraces: tread
  • Slope Position: middle third
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Flooding: rare flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/23/2011 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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 % % % % % % % % % % % % %

    Ap1

    Ap2

    Bky1

    Bky2

    Bky3

    Bk1

    Bk2

    0

    10

    28

    51

    86

    120

    146

    10

    28

    51

    86

    120

    146

    200

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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

    Ap1

    Ap2

    Bky1

    Bky2

    Bky3

    Bk1

    Bk2

    0

    10

    28

    51

    86

    120

    146

    10

    28

    51

    86

    120

    146

    200

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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 %

    Ap1

    Ap2

    Bky1

    Bky2

    Bky3

    Bk1

    Bk2

    0

    10

    28

    51

    86

    120

    146

    10

    28

    51

    86

    120

    146

    200

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    10

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    7

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

    ochric epipedon

    gypsic horizon

    cambic horizon

    0—28

    28—120

    28—64

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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

    1

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    1053

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    5

    368

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    165

    11.1

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    Ap1—0 to 10 centimeters (0.0 to 3.9 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; silty clay loam; 15 percent sand; 35 percent clay; moderate fine granular structure; very hard, firm, moderately sticky, moderately plastic; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0; abrupt smooth boundary. Lab sample # 11N02140; dry when described; observed in trench
    Ap2—10 to 28 centimeters (3.9 to 11.0 inches); light brownish gray (10YR 6/2), dark grayish brown (10YR 4/2), moist; silty clay loam; 15 percent sand; 38 percent clay; strong fine angular blocky, and strong medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.8; abrupt smooth boundary. Lab sample # 11N02141; dry when described; observed in trench
    Bky1—28 to 51 centimeters (11.0 to 20.1 inches); pale brown (10YR 6/3), brown (10YR 5/3), moist; silt loam; 25 percent sand; 25 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; 2 percent fine distinct irregular carbonate masses in matrix and 2 percent medium distinct irregular gypsum masses in matrix; fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.8; clear smooth boundary. Lab sample # 11N02142; dry when described; observed in trench
    Bky2—51 to 86 centimeters (20.1 to 33.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; silty clay loam; 10 percent sand; 32 percent clay; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; 2 percent medium distinct spherical carbonate masses in matrix and 3 percent medium distinct irregular gypsum masses in matrix; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2; clear smooth boundary. Lab sample # 11N02143; dry when described; observed in trench
    Bky3—86 to 120 centimeters (33.9 to 47.2 inches); brown (10YR 5/3), brown (10YR 4/3), moist; silty clay loam; 10 percent sand; 35 percent clay; moderate medium subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; 1 percent fine distinct spherical carbonate masses in matrix and 3 percent medium distinct irregular gypsum masses in matrix; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4; clear smooth boundary. Lab sample # 11N02144; dry when described; observed in trench
    Bk1—120 to 146 centimeters (47.2 to 57.5 inches); variegated brown (10YR 5/3), brown (10YR 4/3), moist; silty clay loam; 20 percent sand; 35 percent clay; weak fine subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; 1 percent fine distinct spherical carbonate masses in matrix; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4; gradual wavy boundary. Lab sample # 11N02145; dry when described; observed in trench
    Bk2—146 to 200 centimeters (57.5 to 78.7 inches); brown (10YR 5/3), brown (10YR 4/3), moist; silt loam; 20 percent sand; 22 percent clay; massive; slightly hard, very friable, slightly sticky, slightly plastic; 1 percent fine distinct threadlike carbonate masses in matrix; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0. Lab sample # 11N02146; dry when described; observed in trench