IDENTIFIERS

  • Current Taxon Name (Soil Name): Guayabota
  • OSD
  • Series Extent
  • User Site ID: D11PR119001
  • User Pedon ID: S11PR119001
  • User Site Association ID: D11PR119001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 12N7857
  • NCSS Pedon Lab Data NASIS Record ID - 56624
  • Print Date: 12/4/2024

    • 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: 18.3042778
  • Std. Longitude: -65.7844167
  • Datum: WGS84
  • Location Description: Rio Grande, Puerto Rico. Approximately 400 feet Northwest from the intersection of PR Highway 191 and forest trail No. 18; about 200 feet northwest from forest trail No. 18 at El Yunque National Forest. USGS El Yunque Topographic Quadrangle (1982). Lat. 18 degrees 18 minutes 15.4 seconds N. ; Long. 65 degrees 47 minutes 03.9 seconds W.
  • Map Unit: GuF—Guayabota-Yunque complex, 30 to 60 percent slopes
  • Non-MLRA Soil Survey Area: PR700—El Yunque National Forest, Puerto Rico

    • PEDON

  • Describers Name: Jorge L. Lugo; Samuel Rios
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Guayabota
  • PSC - 28 to 100 cm.
  • Classificaton Date - 8/17/2011
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - perudic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Guayabota
  • Classificaton Date - 3/2/2011
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: Residuum from volcanic bedrock
  • Landscape: mountain range
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, upper third
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Complexity: complex
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Drainage Pattern: dendritic
  • Runoff: high
  • Drainage Class: somewhat poorly
  • Flooding: none flooding
  • Ponding: none ponding
  • Wet Soil Moisture Duration: 365
  • Bedrock: strongly coherent igneous, unspecified at 112cm
  • Geology: Middle Cretaceous member of the Tabonuco Formation formation in the Kt group.
  • Surface Fragments: 5.00 percent 252- to 600-millimeter volcanic, unspecified, 10.00 percent 76- to 250-millimeter volcanic, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/2/2011 (actual site observation date)
  • Hydrology Status: unaltered
  • Plant Association Name: Tabonuco Forest
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - tropical
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    strongly coherent

    160 -

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    0—28

    28—112

    —-

    —-
    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

    38

    —

    —

    650

    —

    130

    4304

    —

    365

    18.4

    19.7

    16.9

    —

    —

    —

    —

    —

    668245

    Pico del Este, Puerto Rico

    Weather Service
    A—0 to 28 centimeters (0.0 to 11.0 inches); brown (10YR 4/3) broken face; strong fine subangular blocky, and strong medium subangular blocky structure; firm, nonsticky, slightly plastic; slow permeability; many (6.0) very fine roots throughout and many (6.0) medium roots throughout and many (6.0) fine roots throughout and many (6.0) coarse roots throughout; many (6.0) very fine high-continuity irregular and many (6.0) medium high-continuity irregular and many (6.0) fine high-continuity irregular and many (6.0) coarse moderate-continuity irregular pores; 30 percent faint pressure faces on all faces of peds; 5 percent by volume 250-?-600 millimeter volcanic, unspecified fragments and 10 percent by volume 2-?-76 millimeter volcanic, unspecified fragments; negative to alpha-alpha dipyridyl on 2 percent of the area measured in matrix; noneffervescent, by hcl, 1n; very strongly acid, pH 4.5, hellige-truog; abrupt smooth boundary. Lab sample # 12N02207; moist when described; observed in pit, small. continuous - phpvsfiid 1112791; continuous - phpvsfiid 1112791
    Bw1—28 to 68 centimeters (11.0 to 26.8 inches); grayish brown (2.5Y 5/2) broken face; moderate medium subangular blocky, and moderate coarse subangular blocky structure; firm, slightly sticky, moderately plastic; slow permeability; common (4.0) medium roots throughout and common (4.0) fine roots throughout; many (6.0) very fine moderate-continuity irregular and many (6.0) fine moderate-continuity irregular pores; 10 percent faint clay films on all faces of peds; 5 percent by volume 2-?-75 millimeter volcanic, unspecified fragments and 15 percent by volume 76-?-250 millimeter volcanic, unspecified fragments; positive to alpha-alpha dipyridyl on 2 percent of the area measured in matrix; noneffervescent, by hcl, 1n; very strongly acid, pH 5.0, hellige-truog; abrupt irregular boundary. Lab sample # 12N02208; moist when described; observed in pit, small. continuous - phpvsfiid 1112792; continuous - phpvsfiid 1112792
    Bw2—68 to 112 centimeters (26.8 to 44.1 inches); strong brown (7.5YR 5/6) broken face; weak coarse subangular blocky structure; firm, slightly sticky, moderately plastic; slow permeability; few (0.9) fine roots throughout; common (4.0) very fine moderate-continuity irregular and common (4.0) fine moderate-continuity irregular and common (4.0) fine moderate-continuity tubular pores; 20 percent distinct clay films on all faces of peds; 15 percent prominent iron depletions on surfaces along root channels and 25 percent prominent red (2.5YR 4/8), moist, and light red (2.5YR 6/8), moist, iron-manganese masses on surfaces along root channels; 5 percent fine prominent red (2.5YR 5/8), moist, iron masses in matrix and 5 percent very fine prominent red (2.5YR 5/8), moist, iron masses in matrix; 2 percent by volume 76-?-250 millimeter volcanic, unspecified fragments and 5 percent by volume 2-?-75 millimeter volcanic, unspecified fragments; negative to alpha-alpha dipyridyl on 2 percent of the area measured in matrix; noneffervescent, by hcl, 1n; strongly acid, pH 5.5, hellige-truog; abrupt wavy boundary. Lab sample # 12N02209; moist when described; observed in pit, small. continuous - phpvsfiid 1112794; continuous - phpvsfiid 1112794
    BC—112 to 160 centimeters (44.1 to 63.0 inches); 50 percent yellowish brown (10YR 5/8) broken face and 25 percent strong brown (7.5YR 5/6) broken face; structureless massive; firm, nonsticky, slightly plastic; slow permeability; few (0.9) fine roots throughout; common (4.0) very fine moderate-continuity irregular and few (0.9) very fine moderate-continuity tubular and common (4.0) fine moderate-continuity irregular pores; 5 percent faint clay films on all faces of peds; 25 percent fine and medium prominent iron-manganese concretions with sharp boundaries throughout; 10 percent by volume 2-?-250 millimeter volcanic, unspecified fragments and 20 percent by volume 250-?-600 millimeter volcanic, unspecified fragments; negative to alpha-alpha dipyridyl on 2 percent of the area measured in matrix; noneffervescent, by hcl, 1n; strongly acid, pH 5.5, hellige-truog. Lab sample # 12N02210; moist when described; observed in pit, small. patchy - phpvsfiid 1112793; patchy - phpvsfiid 1112793
    Cr—160 centimeters (63.0 inches); fragments.; moist when described; observed in pit, small