IDENTIFIERS

  • Current Taxon Name (Soil Name): Palmarejo
  • OSD
  • Series Extent
  • User Site ID: D57PR079002
  • User Pedon ID: D57PR079002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 40A0244
  • NCSS Pedon Lab Data NASIS Record ID - 32772
  • Print Date: 11/21/2024

    • 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: 18.0366667
  • Std. Longitude: -67.1002778
  • Datum: WGS84
  • Location Description: Palmarejo loam, 0 to 2 percent slopes; approximately 0.7 mile northeast of the intersection of P.R. Hwy. 306 and P.R. Hwy. 101; about 0.35 mile south of P.R. Hwy. 306 and P.R. Hwy. 394; about 200 feet west of dirt road; Lajas Municipality. (USGS San German, P.R. topographic quadrangle (1966); lat. 18 degrees 02 minutes 12 seconds N. and long 67 degrees 06 minutes 01 second W.)
  • Map Unit: PaA—Palmarejo loam, 0 to 2 percent slopesPaA—Palmarejo loam, 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: L.T. Alexander; C.J. Koch; J.A. Bonnet; Roberto E. Gierbolini-Cruz; J. Juarez; Julio E. Trigo
  • Current Taxonomic Class: Fine, mixed, semiactive, isohyperthermic Typic Haplustults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Palmarejo
  • PSC - 23 to 73 cm.
  • Classificaton Date - 2/27/2009
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Palmarejo
  • Classificaton Date - 9/5/1957
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 27.5 degrees C of Soil Temperature


    • SITE

  • Parent Material: sediments that weathered from volcanic bedrock
  • Landscape: semiarid coastal plain coastal plain
  • Landform: alluvial fan
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Pattern: dendritic
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Holocene And Pleistocene (quaternary) member of the Alluvium formation in the Qal group.
  • Surface Fragments: 11.00 percent 2- to 75-millimeter mixed,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/5/1957 (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

    ochric epipedon

    argillic horizon

    0—23

    23—76

    18—23—35

    48—53—89
    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

    2

    —

    —

    30

    —

    220

    1162

    —

    365

    25.1

    26.7

    23.3

    —

    —

    —

    —

    —

    665097

    Lajas Substation

    Weather (NOAA)
    Ap—0 to 23 centimeters (0.0 to 9.1 inches);, dark brown (7.5YR 3/2) broken face, moist; loam; 41 percent sand; 38 percent silt; 21 percent clay; weak medium granular structure; friable, slightly sticky, slightly plastic; moderate permeability; 6.0 fine roots throughout; 2 percent by volume 2-50-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.5, pH meter; abrupt smooth boundary. Lab sample # 40A01816; moist when described; observed in pit, large or quarry
    Bt1—23 to 46 centimeters (9.1 to 18.1 inches);, 50 percent dark brown (7.5YR 3/2) broken face and 50 percent yellowish brown (10YR 5/6) broken face, moist; clay; 28 percent sand; 16 percent silt; 56 percent clay; moderate medium subangular blocky structure; firm, slightly sticky, moderately plastic; moderate permeability; 3.0 fine roots throughout; 15 percent faint clay films on all faces of peds; 1 percent by volume 2-50-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.6, pH meter; clear smooth boundary. Lab sample # 40A01817; moist when described; observed in pit, large or quarry
    Bt2—46 to 76 centimeters (18.1 to 29.9 inches);, yellowish brown (10YR 5/8) broken face, moist; clay; 31 percent sand; 22 percent silt; 47 percent clay; moderate medium subangular blocky structure; firm, slightly sticky, moderately plastic; moderate permeability; 0.5 fine roots throughout; 10 percent faint clay films on all faces of peds; 25 percent fine prominent red (10R 4/8), moist, masses of oxidized iron with sharp boundaries in matrix; 2 percent by volume 2-50-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.7, pH meter; clear smooth boundary. Lab sample # 40A01818; moist when described; observed in pit, large or quarry
    BC—76 to 105 centimeters (29.9 to 41.3 inches);, 50 percent yellowish brown (10YR 5/8) broken face and 50 percent white (7.5YR 8/1) broken face, moist; clay loam; 40 percent sand; 28 percent silt; 32 percent clay; massive; firm, slightly sticky, moderately plastic; moderate permeability; 0.5 fine roots throughout; 1 percent fine prominent black (10YR 2/1), moist, iron-manganese concretions with sharp boundaries in matrix; 8 percent by volume 2-50-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.7, pH meter; clear smooth boundary. Lab sample # 40A01819; moist when described; observed in pit, large or quarry
    C—105 to 130 centimeters (41.3 to 51.2 inches);, 50 percent red (2.5YR 4/8) broken face and 50 percent white (7.5YR 8/1) broken face, moist; sandy clay loam; 53 percent sand; 26 percent silt; 22 percent clay; massive; firm, slightly sticky, moderately plastic; moderate permeability; 1 percent fine prominent black (10YR 2/1), moist, iron-manganese concretions with sharp boundaries in matrix; fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.8, pH meter. Lab sample # 40A01820; moist when described; observed in pit, large or quarry