IDENTIFIERS

  • Current Taxon Name (Soil Name): Santa Isabel
  • OSD
  • Series Extent
  • User Site ID: D99PR079010
  • User Pedon ID: D99PR079010
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 81P0318
  • NCSS Pedon Lab Data NASIS Record ID - 49162
  • 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: 18.0330556
  • Std. Longitude: -67.0738889
  • Datum: WGS84
  • Location Description: Santa Isabel clay, 0 to 2 percent slopes; approximately 1.6 miles southwest of the city of Lajas, from the intersection of P.R. Hwy. 315 and P.R. Hwy. 101; about 0.3 mile northeast from the intersection of P.R. Hwy. 303 and P.R. Hwy. 101; about 330 feet south of the Administration Building of the Lajas Agricultural Experiment Station of the University of Puerto Rico-Mayaguez Campus; Lajas Municipality. (USGS San German topographic quadrangle (1966); lat. 18 degrees 01 minute 59 seconds N., and long. 67 degrees 04 minutes 26 seconds W.)
  • Map Unit: Sn—Santa Isabel claySiA—Santa Isabel clay, 0 to 2 percent slopes
  • Non-MLRA Soil Survey Area: PR687—Lajas Valley Area, Puerto RicoPR787—San German Area, Southwestern Puerto Rico

    • PEDON

  • Describers Name: Gilberto Acevedo; Luis H. Rivera
  • Current Taxonomic Class: Fine, smectitic, isohyperthermic Typic Haplusterts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 10
  • Correlated Information:
  • Soil Name - Santa Isabel
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/27/2009
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Santa Isabel
  • Classificaton Date - 1/20/1981
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey alluvial sediments that weathered from igneous, metamorphic and sedimentary rocks
  • Landscape: river valley, basin
  • Landform: flood plain, fan skirt
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Pattern: artificial
  • Runoff: negligible
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Holocene And Pleistocene member of the Alluvium formation in the Qal group.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/20/1981 (actual site observation date)
  • Air Photo ID: 6C
  • Surface Water Kind: none observed
  • 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 Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    slickensides

    0—160

    25—160

    41—160—190

    25—135—152
    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

    —

    —

    30

    —

    200

    1162

    —

    365

    25.1

    26.7

    23.3

    —

    —

    —

    —

    —

    665097

    Lajas Substation

    Weather (NOAA)
    Ap—0 to 25 centimeters (0.0 to 9.8 inches);, black (10YR 2/1) broken face, moist; clay; 11 percent sand; 35 percent silt; 53 percent clay; weak fine granular structure; firm, moderately sticky, moderately plastic; very slow permeability; 6.0 fine roots throughout; fragments; neutral, pH 6.8, pH meter; clear wavy boundary. Lab sample # 81P1635S; moist when described; observed in pit, large or quarry
    ABss1—25 to 70 centimeters (9.8 to 27.6 inches);, black (10YR 2/1) broken face, moist; clay; 7 percent sand; 34 percent silt; 59 percent clay; weak medium angular blocky structure; firm, moderately sticky, moderately plastic; very slow permeability; 6.0 fine roots throughout; 25 percent distinct slickensides (pedogenic) on all faces of peds; fragments; neutral, pH 6.8, pH meter; gradual wavy boundary. Lab sample # 81P1636S; moist when described; observed in pit, large or quarry. continuous - phpvsfiid 359789; continuous - phpvsfiid 359789
    ABss2—70 to 100 centimeters (27.6 to 39.4 inches);, very dark gray (10YR 3/1) broken face, moist; clay; 7 percent sand; 39 percent silt; 54 percent clay; weak medium angular blocky structure; friable, moderately sticky, moderately plastic; very slow permeability; 3.0 fine roots throughout; 50 percent distinct slickensides (pedogenic) on all faces of peds; fragments; neutral, pH 7.1, pH meter; gradual wavy boundary. Lab sample # 81P1637S; moist when described; observed in pit, large or quarry. continuous - phpvsfiid 359790; continuous - phpvsfiid 359790
    ABss3—100 to 127 centimeters (39.4 to 50.0 inches);, very dark gray (10YR 3/1) broken face, moist; clay; 13 percent sand; 37 percent silt; 50 percent clay; weak medium angular blocky structure; friable, moderately sticky, moderately plastic; very slow permeability; 0.5 fine roots throughout; 65 percent distinct slickensides (pedogenic) on all faces of peds; fragments; slightly alkaline, pH 7.5, pH meter; gradual wavy boundary. Lab sample # 81P1638S; moist when described; observed in pit, large or quarry. continuous - phpvsfiid 359791; continuous - phpvsfiid 359791
    ABss4—127 to 160 centimeters (50.0 to 63.0 inches);, black (10YR 2/1) broken face, moist; clay; 13 percent sand; 39 percent silt; 49 percent clay; weak medium angular blocky structure; friable, moderately sticky, moderately plastic; very slow permeability; 0.5 fine roots throughout; 65 percent distinct slickensides (pedogenic) on all faces of peds; 2 percent by volume subrounded 2-50-75 millimeter volcanic, unspecified fragments; moderately alkaline, pH 7.9, pH meter; gradual wavy boundary. Lab sample # 81P1639S; moist when described; observed in pit, large or quarry. continuous - phpvsfiid 359792; continuous - phpvsfiid 359792
    BC—160 to 175 centimeters (63.0 to 68.9 inches);, brown (10YR 4/3) broken face, moist; clay; 16 percent sand; 29 percent silt; 54 percent clay; massive; firm, moderately sticky, moderately plastic; very slow permeability; 2 percent by volume subrounded 2-50-75 millimeter volcanic, unspecified fragments; slightly alkaline, pH 7.8, pH meter. Lab sample # 81P1640S; moist when described; observed in pit, large or quarry