IDENTIFIERS

  • Current Taxon Name (Soil Name): Humatas
  • OSD
  • Series Extent
  • User Site ID: S1988PR089001
  • User Pedon ID: 88PR089001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 88P0370
  • NCSS Pedon Lab Data NASIS Record ID - 60488
  • Print Date: 3/2/2025

    • LOCATION

  • Location Description: Puerto Rico, Luguillo Municipio, Caribbean National Forest.
  • State: Puerto Rico
  • County: PR089—Luquillo
  • MLRA: 270—Humid Mountains and Valleys

    • PEDON

  • Describers Name: D. Williams and R. Rolling
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Humatas
  • Taxonomic Class - Clayey, mixed Aquic Hapludox
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/1/1988
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: hillside or mountainside
  • Slope Position: lower third
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/1/1988 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    oxic horizon

    0—7

    7—30

    30—97

    —-

    —-

    —-
    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

    30

    —

    —

    —

    —

    225

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    1A1—0 to 1 centimeters (0.0 to 0.4 inches); brown (7.5YR 4/4) interior clay loam; 33 percent clay; strong fine granular structure; friable, moderately sticky, moderately plastic; 5.5 very fine roots throughout; fragments; very strongly acid, pH 4.8, hellige-truog; abrupt smooth boundary. Lab sample # 88P01887. many very fine roots throughout
    1A2—1 to 7 centimeters (0.4 to 2.8 inches); brown (7.5YR 4/4) interior clay loam; 42 percent clay; moderate fine subangular blocky, and moderate fine granular structure; friable, moderately sticky, moderately plastic; 5.5 medium roots throughout and 5.5 fine roots; fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # 88P01888. many fine roots; many medium roots throughout
    1Bw1—7 to 17 centimeters (2.8 to 6.7 inches); yellowish brown (10YR 5/6) interior clay; 70 percent clay; 1 percent strong brown (7.5YR 5/6) coarse distinct mottles; moderate fine subangular blocky structure; friable, moderately sticky, moderately plastic; 2.5 medium roots throughout and 2.5 fine roots; 0.5 fine discontinuous tubular pores; 37 percent distinct , moist, coats on all faces of peds; 1 percent by volume 2-39-75 millimeter igneous, unspecified fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # 88P01889. common coats surface features on vertical and horizontal faces of peds; common fine roots; common medium roots throughout; few coarse distinct 7.5YR56 mottles; continuous - phpvsfiid 222977; continuous - phpvsfiid 222977
    1Bw2—17 to 30 centimeters (6.7 to 11.8 inches); strong brown (7.5YR 5/6) interior clay; 70 percent clay; 11 percent yellowish red (5YR 5/8) coarse distinct mottles; moderate medium subangular blocky, and moderate fine subangular blocky structure; friable, moderately sticky, moderately plastic; 2.5 medium roots throughout and 2.5 fine roots; 0.5 fine discontinuous tubular pores; 37 percent distinct , moist, coats on all faces of peds; 1 percent by volume 2-39-75 millimeter igneous, unspecified fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # 88P01890. common coats surface features on vertical and horizontal faces of peds; common fine roots; common medium roots throughout; common coarse distinct 5YR58 mottles; continuous - phpvsfiid 222978; continuous - phpvsfiid 222978
    1Bo1—30 to 53 centimeters (11.8 to 20.9 inches); yellowish red (5YR 5/8) interior clay; 75 percent clay; 1 percent strong brown (7.5YR 5/8) coarse distinct and 1 percent red (10R 4/8) fine distinct mottles; weak medium subangular blocky structure; firm, moderately sticky, moderately plastic; 0.5 medium roots throughout and 0.5 fine roots; 0.5 fine discontinuous tubular pores; 15 percent faint , moist, coats; 1 percent by volume 2-39-75 millimeter igneous, unspecified fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # 88P01891. few coats surface features; few fine roots; few medium roots throughout; few coarse distinct 7.5YR58 mottles; few fine distinct 10R48 mottles; discontinuous - phpvsfiid 222979; discontinuous - phpvsfiid 222979
    1Bo2—53 to 73 centimeters (20.9 to 28.7 inches); red (2.5YR 4/8) interior clay; 75 percent clay; 1 percent reddish yellow (7.5YR 6/8) coarse prominent and 1 percent very pale brown (10YR 8/2) fine prominent and 1 percent 10YR 4/8 (10YR 4/8) fine prominent mottles; weak medium subangular blocky structure; firm, moderately sticky, moderately plastic; 0.5 fine roots throughout; 0.5 fine discontinuous tubular pores; 15 percent faint , moist, coats; 1 percent by volume 2-39-75 millimeter igneous, unspecified fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # 88P01892. few coats surface features; few fine roots throughout; few coarse prominent 7.5YR68 mottles; few fine prominent 10YR82 mottles; few fine prominent 10YR48 mottles; discontinuous - phpvsfiid 222980; discontinuous - phpvsfiid 222980
    1Bo3—73 to 97 centimeters (28.7 to 38.2 inches); red (2.5YR 4/8) interior clay; 50 percent clay; 1 percent pinkish white (7.5YR 8/2) medium prominent and 30 percent reddish yellow (7.5YR 6/8) coarse distinct mottles; weak coarse subangular blocky structure; friable, moderately sticky, moderately plastic; 0.5 fine roots throughout; 2.5 fine discontinuous tubular pores; 1 percent fine platy nonmagnetic shot; 3 percent by volume 2-39-75 millimeter igneous, unspecified fragments; extremely acid, pH 4.4, unspecified; clear smooth boundary. Lab sample # 88P01893. few fine nonmagnetic shot concentrations; few fine roots throughout; many coarse distinct 7.5YR68 mottles; few medium prominent 7.5YR82 mottles
    1BC—97 to 154 centimeters (38.2 to 60.6 inches); red (2.5YR 4/8) interior clay loam; 30 percent clay; 30 percent pinkish white (7.5YR 8/2) coarse prominent mottles; weak coarse subangular blocky structure; friable, moderately sticky, moderately plastic; 0.5 fine roots throughout; 1 percent fine platy nonmagnetic shot; 3 percent by volume 2-39-75 millimeter igneous, unspecified fragments and 5 percent by volume 2-39-75 millimeter igneous, unspecified fragments; very strongly acid, pH 4.6, unspecified; clear smooth boundary. Lab sample # 88P01894. few fine nonmagnetic shot concentrations; few fine roots throughout; many coarse prominent 7.5YR82 mottles
    1C—154 to 190 centimeters (60.6 to 74.8 inches); red (2.5YR 4/8) interior loam; 20 percent clay; 1 percent brownish yellow (10YR 6/6) fine distinct and 30 percent pinkish white (7.5YR 8/2) coarse prominent mottles; friable, slightly sticky, slightly plastic; 0.5 fine roots throughout; 1 percent fine platy nonmagnetic shot; fragments; very strongly acid, pH 4.6, unspecified. Lab sample # 88P01895. Weathered saprolite.; few fine nonmagnetic shot concentrations; few fine roots throughout; many coarse prominent 7.5YR82 mottles; few fine distinct 10YR66 mottles