IDENTIFIERS

  • Current Taxon Name (Soil Name): Montegrande
  • OSD
  • Series Extent
  • User Site ID: S1986PR111001
  • User Pedon ID: 86PR111001
  • Vegetation Plot ID: S1986PR111001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 86P0298
  • NCSS Pedon Lab Data NASIS Record ID - 58103
  • Print Date: 11/27/2024

    • 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: 18.0680561
  • Std. Longitude: -66.7255554
  • Datum: WGS84
  • Location Description: Puerto Rico just N of Penuelas 330 feet NE of Rio Guayames 200 feet E on paved Rd at km marker .4 on HWY 386 130 feet S.
  • State: Puerto Rico
  • County: PR111—Penuelas
  • MLRA: 273—Semiarid Coastal Plains

    • PEDON

  • Describers Name: D. Williams L. Rivera J. Torres G. Acevedo W. Lynn
  • Current Taxonomic Class: Very-fine, mixed, superactive, isohyperthermic Chromic Hapluderts
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Montegrande (flagged as OSD)
  • PSC - 25 to 102 cm.
  • Classificaton Date - 6/23/2021
  • Classifier - SRT
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Montegrande
  • Taxonomic Class - Fine, montmorillonitic Udorthentic Chromusterts
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/1/1986
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: terrace—outwash or marine
  • Hill Slope Profile: summit
  • Slope Position: lower third
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/1/1986 (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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    URMA3

    Urochloa maxima

    guineagrass

    —

    —

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

    mollic epipedon

    cambic horizon

    0—22

    22—190

    —-

    —-
    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

    4

    —

    —

    —

    —

    180

    150

    —

    —

    26

    28

    24

    29

    31

    28

    —

    —

    —

    —

    —
    1Ap—0 to 22 centimeters (0.0 to 8.7 inches); very dark grayish brown (10YR 3/2) interior clay; moderate medium subangular blocky, and moderate fine subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; 2.5 fine roots between peds; 0.5 very fine discontinuous tubular pores; 1 percent worm casts; 1 percent by volume 2-39-75 millimeter igneous, unspecified fragments and 1 percent by volume 75-162-250 millimeter igneous, unspecified fragments; neutral, pH 6.6, bromthymol blue; clear smooth boundary. Lab sample # 86P01755; moist when described;. Few ant tunnels.; few worm casts concentrations; common fine roots between peds
    1Bw1—22 to 40 centimeters (8.7 to 15.7 inches); brown (10YR 4/3) interior clay; weak coarse subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; 0.5 fine roots throughout; 0.5 fine discontinuous tubular pores; 55 percent distinct very dark grayish brown (10YR 3/2), moist, organic stains on all faces of peds; 1 percent worm casts; 2 percent by volume 2-39-75 millimeter igneous, unspecified fragments; neutral, pH 7.0, bromthymol blue; clear wavy boundary. Lab sample # 86P01756. few worm casts concentrations; many organic coats surface features on vertical and horizontal faces of peds; few fine roots throughout; continuous - phpvsfiid 1923500; continuous - phpvsfiid 1923500
    1Bw2—40 to 64 centimeters (15.7 to 25.2 inches); dark yellowish brown (10YR 4/4) interior clay; moderate coarse wedge, and moderate medium angular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 fine roots throughout; 0.5 very fine discontinuous tubular pores; 55 percent prominent dark brown (10YR 3/3) slickensides (pedogenic); 1 percent fine spherical iron-manganese concretions; 1 percent fine irregular carbonate nodules; 2 percent by volume 2-39-75 millimeter igneous, unspecified fragments; neutral, pH 7.2, phenol red; clear wavy boundary. Lab sample # 86P01757; dry when described;. Dark coatings along root channels. Slickensides are tilted at 45 degrees.; few fine carbonate nodules concentrations; few fine iron-manganese concretions concentrations; many intersecting slickensides surface features; few fine roots throughout; continuous - phpvsfiid 1923498; continuous - phpvsfiid 1923498
    1Bw3—64 to 93 centimeters (25.2 to 36.6 inches); brown (7.5YR 5/4) interior clay; moderate coarse wedge, and moderate medium angular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 fine roots between peds; 0.5 very fine discontinuous tubular pores; 55 percent prominent brown (7.5YR 5/4) slickensides (pedogenic); 1 percent fine irregular carbonate nodules and 1 percent medium irregular carbonate nodules; 2 percent by volume 2-39-75 millimeter igneous, unspecified fragments; slightly alkaline, pH 7.4, phenol red; clear wavy boundary. Lab sample # 86P01758; dry when described;. Few fine manganese concretions. slickensides tilted at 45 degrees.; few fine carbonate nodules concentrations; few medium carbonate nodules concentrations; many intersecting slickensides surface features; few fine roots between peds; continuous - phpvsfiid 1923502; continuous - phpvsfiid 1923502
    1Bw4—93 to 125 centimeters (36.6 to 49.2 inches); strong brown (7.5YR 5/6) interior clay; moderate medium subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; 0.5 fine roots between peds; 0.5 very fine and fine discontinuous tubular pores; 37 percent distinct brown (10YR 5/3), moist, coats on all faces of peds; 1 percent fine spherical iron-manganese concretions; 1 percent fine irregular carbonate concretions; 5 percent by volume 75-162-250 millimeter igneous, unspecified fragments; slightly alkaline, pH 7.4, phenol red; gradual smooth boundary. Lab sample # 86P01759. Few root channels coated with dark material.; few fine carbonate concretions concentrations; few fine iron-manganese concretions concentrations; common coats surface features on vertical and horizontal faces of peds; few fine roots between peds; discontinuous - phpvsfiid 1923499; discontinuous - phpvsfiid 1923499
    1Bw5—125 to 152 centimeters (49.2 to 59.8 inches); brown (7.5YR 5/4) interior clay; 1 percent light olive brown (2.5Y 5/4) medium distinct mottles; weak medium subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; 0.5 fine roots between peds; 0.5 very fine and fine discontinuous tubular pores; 37 percent distinct brown (10YR 5/3), moist, coats on all faces of peds; 1 percent by volume 75-162-250 millimeter igneous, unspecified fragments; slightly alkaline, pH 7.6, phenol red; clear smooth boundary. Lab sample # 86P01760; moist when described;. Dark coatings along root channels.; common coats surface features on vertical and horizontal faces of peds; few fine roots between peds; few medium distinct 2.5Y54 mottles; discontinuous - phpvsfiid 1923503; discontinuous - phpvsfiid 1923503
    1Bw6—152 to 190 centimeters (59.8 to 74.8 inches); yellowish brown (10YR 5/6) interior clay; moderate medium subangular blocky, and weak fine subangular blocky structure; hard, firm, slightly sticky, slightly plastic; 55 percent prominent very dark brown (10YR 2/2), moist, black stains on all faces of peds; 1 percent fine spherical iron-manganese concretions; 1 percent fine irregular carbonate concretions; 1 percent by volume 2-39-75 millimeter igneous, unspecified fragments; slightly alkaline, pH 7.6, phenol red. Lab sample # 86P01761; moist when described;. Few soft masses of carbonate.; few fine carbonate concretions concentrations; few fine iron-manganese concretions concentrations; many black stains surface features on vertical and horizontal faces of peds; discontinuous - phpvsfiid 1923501; discontinuous - phpvsfiid 1923501