IDENTIFIERS

  • Current Taxon Name (Soil Name): Islote
  • OSD
  • Series Extent
  • User Site ID: S1989PR013001
  • User Pedon ID: 89PR013001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 89P0402
  • NCSS Pedon Lab Data NASIS Record ID - 61506
  • Print Date: 11/13/2025

    • 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: 18.4925003
  • Std. Longitude: -66.6397247
  • Datum: WGS84
  • Location Description: Arecibo municipal P.R.; Arecibo ss sheet #4; 5.2 mi E on Hwy 681 from jct with Hwy 2 and 600 feet S of road in pasture
  • State: Puerto Rico
  • County: PR013—Arecibo
  • MLRA: 272—Humid Coastal Plains

    • PEDON

  • Describers Name: D. Williams, C. Santiago
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Islote
  • Taxonomic Class - Fine, mixed Mollic Hapludalfs
  • PSC - 33 to 84 cm.
  • Classificaton Date - 2/1/1989
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: coastal plain
  • Slope Shape Down: linear
  • Runoff: very low
  • Drainage Class: somewhat poorly
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/1/1989 (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
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    lithic contact

    argillic horizon

    0—20

    0—86

    20—86

    —-

    —-

    —-
    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

    —

    —

    3

    —

    0

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    0410

    —
    Ap—0 to 10 centimeters (0.0 to 3.9 inches); dark brown (10YR 3/3) sandy clay loam; 26 percent clay; friable, moderately sticky, moderately plastic; fragments; moderately acid, pH 6.0, chlorophenol red. Lab sample # 89P02245
    A—10 to 20 centimeters (3.9 to 7.9 inches); very dark grayish brown (10YR 3/2) sandy clay loam; 29 percent clay; friable, moderately sticky, moderately plastic; fragments; moderately acid, pH 6.0, chlorophenol red. Lab sample # 89P02246
    Bt1—20 to 33 centimeters (7.9 to 13.0 inches); 30 percent very dark grayish brown (10YR 3/2) and 70 percent brown (7.5YR 4/4) clay; 47 percent clay; 1 percent yellowish red (5YR 4/6) fine distinct mottles; weak coarse prismatic, and weak fine subangular blocky structure; firm, moderately sticky, moderately plastic; 2.5 fine roots throughout; 0.5 fine tubular pores; 15 percent distinct very dark grayish brown (10YR 3/2), moist, coats on all faces of peds; 11 percent fine and medium spherical iron-manganese masses; fragments; moderately acid, pH 6.0, chlorophenol red. Lab sample # 89P02247. common fine and medium soft masses of iron-manganese concentrations; few coats surface features on vertical and horizontal faces of peds; common fine roots throughout; few fine distinct 5YR46 mottles; continuous - phpvsfiid 233008; continuous - phpvsfiid 233008
    Bt2—33 to 53 centimeters (13.0 to 20.9 inches); reddish brown (5YR 4/4) clay; 52 percent clay; weak coarse prismatic, and moderate fine and medium subangular blocky structure; firm, moderately sticky, moderately plastic; 2.5 fine roots throughout and 2.5 fine roots; 0.5 fine tubular pores; 15 percent distinct dark brown (7.5YR 3/4), moist, coats on all faces of peds; 1 percent fine spherical iron-manganese concretions; fragments; slightly acid, pH 6.2, chlorophenol red. Lab sample # 89P02248. common old root channels filled with dark material, few anguler peds breaking at about 45 degrees with thin striations; few fine iron-manganese concretions concentrations; few coats surface features on vertical and horizontal faces of peds; common fine roots; common fine roots throughout; continuous - phpvsfiid 233009; continuous - phpvsfiid 233009
    Bt3—53 to 76 centimeters (20.9 to 29.9 inches); reddish brown (5YR 4/4) clay; 52 percent clay; weak coarse prismatic, and moderate fine and medium subangular blocky structure; firm, moderately sticky, moderately plastic; 0.5 fine roots throughout and 0.5 fine roots; 0.5 fine tubular pores; 15 percent distinct reddish brown (5YR 4/4), moist, coats on all faces of peds; fragments; slightly acid, pH 6.4, chlorophenol red. Lab sample # 89P02249. few old root channels filled with dark material; few coats surface features on vertical and horizontal faces of peds; few fine roots; few fine roots throughout; continuous - phpvsfiid 233010; continuous - phpvsfiid 233010
    Bt4—76 to 86 centimeters (29.9 to 33.9 inches); brown (7.5YR 4/4) clay; 43 percent clay; weak fine and medium subangular blocky structure; friable; 0.5 fine roots throughout; 0.5 fine tubular pores; 2 percent faint , moist, coats; fragments; neutral, pH 6.6, chlorophenol red. Lab sample # 89P02250. few old root channels filled with dark material; very few coats surface features; few fine roots throughout; patchy - phpvsfiid 233011; patchy - phpvsfiid 233011
    R—86 centimeters (33.9 inches); fragments.