IDENTIFIERS

  • Current Taxon Name (Soil Name): Alastra
  • OSD
  • Series Extent
  • User Site ID: S1978ID031009
  • User Pedon ID: 78ID031009
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 78P0427
  • NCSS Pedon Lab Data NASIS Record ID - 45981
  • Print Date: 12/6/2025

    • 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: 42.0855560
  • Std. Longitude: -113.7658310
  • Datum: WGS84
  • Township: 15S
  • Range: 23E
  • Section: 33
  • PLSS Details: 336 meters N and 434 meters W of SE corner
  • Location Description: Cassia County, Idaho
  • State: Idaho
  • County: ID031—Cassia

    • PEDON

  • Describers Name: G. Monroe and G. Logan
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 9
  • Sampled As Information:
  • Soil Name - Alastra
  • Taxonomic Class - Fine-loamy, micaceous Pachic Argixerolls
  • Classificaton Date - 7/1/1978
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: plains
  • Landform: flood plain
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1978 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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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    1A11—0 to 10 centimeters (0.0 to 3.9 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; loam; strong very fine and fine subangular blocky structure; slightly hard, friable, nonsticky, slightly plastic; 5.5 very fine roots; fragments; slight effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 78P02393. many very fine roots
    1A12—10 to 20 centimeters (3.9 to 7.9 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; loam; weak coarse subangular blocky, and strong fine and medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots; fragments; slight effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 78P02394. many very fine roots
    1A13—20 to 30 centimeters (7.9 to 11.8 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; loam; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots; fragments; clear wavy boundary. Lab sample # 78P02395. many very fine roots
    1B1t—30 to 71 centimeters (11.8 to 28.0 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; loam; weak medium prismatic, and weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots; 37 percent clay films in root channels and/or pores; fragments; clear wavy boundary. Lab sample # 78P02396. common clay films surface features in root channels and/or pores; many very fine roots
    1B2t—71 to 100 centimeters (28.0 to 39.4 inches); dark gray (10YR 4/1) interior, very dark grayish brown (10YR 3/2) interior, moist; sandy clay loam; weak coarse subangular blocky, and moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky, moderately plastic; 2.5 very fine roots; 37 percent clay films on faces of peds; fragments; gradual smooth boundary. Lab sample # 78P02397. common clay films surface features on faces of peds; common very fine roots
    1C1—100 to 117 centimeters (39.4 to 46.1 inches); grayish brown (10YR 5/2) interior, dark brown (10YR 3/3) interior, moist; sandy clay loam; massive; hard, very friable, slightly sticky, moderately plastic; 0.5 very fine roots; fragments; abrupt smooth boundary. Lab sample # 78P02398. few very fine roots
    1C2—117 to 140 centimeters (46.1 to 55.1 inches); pale brown (10YR 6/3) interior, dark yellowish brown (10YR 4/4) interior, moist; loam; massive; hard, very friable, slightly sticky, slightly plastic; fragments; gradual smooth boundary. Lab sample # 78P02399
    1C3—140 to 152 centimeters (55.1 to 59.8 inches); pale brown (10YR 6/3) interior, dark yellowish brown (10YR 4/4) interior, moist; sandy loam; massive; slightly hard, very friable, slightly sticky, nonplastic; fragments. Lab sample # 78P02400