IDENTIFIERS

  • Current Taxon Name (Soil Name): Stewart
  • OSD
  • Series Extent
  • User Site ID: S1969AZ003006
  • User Pedon ID: S1969AZ003006
  • Vegetation Plot ID: S1969AZ003006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 69C0152
  • NCSS Pedon Lab Data NASIS Record ID - 43725
  • Print Date: 3/14/2025

    • 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: 32.2266655
  • Std. Longitude: -109.8669434
  • Datum: WGS84
  • Township: 14S
  • Range: 24E
  • Section: 11
  • PLSS Details: 2,500 feet east and 850 feet north of the southwest corner
  • Location Description: East of US Highway 666, about 2-1/2 miles southwest of Willcox.
  • State: Arizona
  • County: AZ003—Cochise

    • PEDON

  • Describers Name: D. Richmond, H. Havens, K. Dunstan
  • Current Taxonomic Class: Loamy, mixed, superactive, thermic, shallow Natrargidic Natridurids
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - Stewart
  • Classificaton Date - 2/1/2010
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Stewart
  • Classificaton Date - 10/15/1969
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: terrace
  • Runoff: low
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/15/1969 (actual site observation date)
  • 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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    EROB

    SPAI

    SPCO4

    SPCO4

    Eragrostis obtusiflora

    Sporobolus airoides

    Sporobolus contractus

    Sporobolus contractus

    alkali lovegrass

    alkali sacaton

    spike dropseed

    spike dropseed

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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

    —

    —

    1280

    —

    225

    305

    —

    —

    14.4

    25.6

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    A21—0 to 5 centimeters (0.0 to 2.0 inches); light gray (10YR 7/2), grayish brown (10YR 5/2), moist; fine sandy loam; moderate thin platy structure; slightly hard, very friable, nonsticky, nonplastic; 21.0 fine and medium roots; 21.0 fine and medium vesicular and 0.5 fine tubular pores; fragments; slight effervescence; very strongly alkaline, pH 9.4, thymol-blue; abrupt smooth boundary. Lab sample # 69C00780; dry when described;
    A22SA—5 to 15 centimeters (2.0 to 5.9 inches); light gray (10YR 7/2), brown (10YR 5/3), moist; fine sandy loam; massive; slightly hard, very friable, nonsticky, nonplastic; 21.0 fine and medium roots; 3.0 fine tubular pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; abrupt wavy boundary. Lab sample # 69C00781; dry when described;
    B2SA—15 to 23 centimeters (5.9 to 9.1 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; loam; weak fine subangular blocky structure; hard when dry, friable, slightly sticky, slightly plastic; 21.0 fine and medium roots; 0.5 fine tubular pores; gray (10YR 5/1) on faces of peds and 10 percent clay films in root channels and/or pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; abrupt smooth boundary. Lab sample # 69C00782; dry when described;
    C1SASIM—23 to 46 centimeters (9.1 to 18.1 inches); light yellowish brown (10YR 6/4), dark yellowish brown (10YR 4/4), moist; massive; extremely hard, very firm, weakly coherent by silica; 3.0 very fine and fine roots; 21.0 very fine and fine vesicular and tubular pores; carbonate coats on lower surfaces of peds or rocks and brownish yellow (10YR 6/8) in root channels and/or pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; clear wavy boundary. Lab sample # 69C00783; dry when described;. many dark gray stains on part of the surface, underside and on joint faces of the pan, brownish yellow coating in old root channels; few fine filaments of lime.
    C1SIMSA—28 to 38 centimeters (11.0 to 15.0 inches); fragments. Lab sample # 69C00788; dry when described;. special sample
    C2SASIM—46 to 56 centimeters (18.1 to 22.0 inches); light gray (10YR 7/2), dark grayish brown (10YR 4/2), moist; massive; very hard, very firm, weakly coherent by silica; 21.0 very fine vesicular and tubular pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; clear wavy boundary. Lab sample # 69C00784; dry when described;
    C3SAG—56 to 84 centimeters (22.0 to 33.1 inches); light gray (10YR 7/2), dark grayish brown (10YR 4/2), moist; fine sandy loam; massive; hard when dry, friable, slightly sticky, slightly plastic; 3.0 very fine and fine vesicular and tubular and 0.5 coarse tubular pores; 10 percent clay films in root channels and/or pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; abrupt wavy boundary. Lab sample # 69C00785; dry when described;
    C4SAG—84 to 94 centimeters (33.1 to 37.0 inches); light gray (10YR 7/1), grayish brown (10YR 5/2), moist; very fine sand; massive; slightly hard, very friable, nonsticky, nonplastic; 21.0 very fine interstitial pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; abrupt wavy boundary. Lab sample # 69C00786; dry when described;. loamy sand in 1 to 6 inch strata
    C5SAG—94 to 107 centimeters (37.0 to 42.1 inches); pale yellow (5Y 7/3) and light gray (2.5Y 7/2), olive (5Y 4/3) and dark grayish brown (2.5Y 4/2), moist; loam; massive; hard when dry, firm, nonsticky, slightly plastic; 0.5 fine tubular pores; fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; abrupt wavy boundary. Lab sample # 69C00787; dry when described;. loamy sand in 1 to 6 strata; the coarser textures normally have the lighter and yellower colors
    C6sag—107 to 130 centimeters (42.1 to 51.2 inches); pale yellow (5Y 7/3), olive (5Y 5/3), moist; sand; single grain; loose, nonsticky, nonplastic; 8 percent by volume subangular 2-39-75 millimeter quartzite fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue; abrupt wavy boundary.; dry when described;. about 5 to 8 percent by volume 2 to 5 mm subangular quartz gravel
    C7sag—130 to 152 centimeters (51.2 to 59.8 inches); pale yellow (5Y 7/3), olive (5Y 5/3), moist; stony loamy sand; massive; hard when dry, friable, slightly sticky, slightly plastic; irregular noncoherent cemented white (10YR 8/1) lime masses; 3 percent by volume subangular 2-39-75 millimeter quartzite fragments; slight effervescence; very strongly alkaline, pH 9.6, thymol-blue.; dry when described;. contains about 2 to 3 percent by volume of 2 to 5 mm subangular quartz gravel; 8 to 10 percent by volume of large irregularly shaped white soft lime masses