IDENTIFIERS

  • Current Taxon Name (Soil Name): Llanos
  • OSD
  • Series Extent
  • User Site ID: S1985PR043001
  • User Pedon ID: 85PR043001
  • Vegetation Plot ID: S1985PR043001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 86P0225
  • NCSS Pedon Lab Data NASIS Record ID - 58030
  • 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: 18.0513897
  • Std. Longitude: -66.3805542
  • Datum: WGS84
  • Location Description: Ponce Area, W of Coamo, 180 feet E. of Km. marker 28.8 on Hwy 14 and 120 feet S. of fence at tamarind tree.
  • State: Puerto Rico
  • County: PR043—Coamo
  • MLRA: 271—Semiarid Mountains and Valleys

    • PEDON

  • Describers Name: D. Williams, L. A. Daniels, G. Acevedo, J. Torres
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Llanos
  • Taxonomic Class - Fine, montmorillonitic Typic Pellusterts
  • PSC - 25 to 100 cm.
  • Classificaton Date - 5/1/1985
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: mountain valleys or canyons
  • Landform: terrace—stream or lake
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/1/1985 (actual site observation date)
  • 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
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CECI

    Cenchrus ciliaris

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    —

    —

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

    mollic epipedon

    0—37

    —-
    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

    5

    —

    —

    115

    —

    135

    100

    —

    —

    26

    28

    24

    29

    31

    28

    —

    —

    —

    —

    —
    1Ap—0 to 18 centimeters (0.0 to 7.1 inches); very dark gray (10YR 3/1) interior, black (10YR 2/1) interior, moist; clay; weak fine subangular blocky, and weak medium subangular blocky structure; hard, firm, very sticky, very plastic; 2.5 very fine roots; fragments; neutral, pH 6.6, thymol-blue; abrupt wavy boundary. Lab sample # 86P01340; moist when described;. common very fine roots
    1A—18 to 37 centimeters (7.1 to 14.6 inches); black (10YR 2/1) interior, black (10YR 2/1) interior, moist; clay; moderate fine angular blocky, and moderate medium angular blocky structure; very hard, firm, very sticky, very plastic; 2.5 very fine roots; 2.5 very fine interstitial and tubular pores; 15 percent prominent , moist, nonintersecting slickensides throughout; fragments; neutral, pH 7.0, thymol-blue; clear wavy boundary. Lab sample # 86P01341; moist when described;. few nonintersecting slickensides surface features throughout; common very fine roots; patchy - phpvsfiid 220064; patchy - phpvsfiid 220064
    1Bw1—37 to 59 centimeters (14.6 to 23.2 inches); 60 percent dark grayish brown (10YR 4/2) interior and 40 percent black (10YR 2/1), 60 percent dark brown (7.5YR 3/2) and 40 percent black (10YR 2/1), moist; clay; moderate coarse angular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 very fine roots; 0.5 very fine interstitial and tubular pores; 55 percent prominent , moist, slickensides (pedogenic) throughout; fragments; neutral, pH 7.2, phenol red; gradual wavy boundary. Lab sample # 86P01342; moist when described;. Many slickensides 5 to 25 cm across and occuring at 3 to 5 cm intervals.; many intersecting slickensides surface features throughout; few very fine roots; continuous - phpvsfiid 220065; continuous - phpvsfiid 220065
    1Bw2—59 to 92 centimeters (23.2 to 36.2 inches); dark grayish brown (10YR 4/2) interior, dark brown (7.5YR 3/2) interior, moist; clay; moderate coarse angular blocky structure; very hard, very firm, very sticky, very plastic; 0.5 very fine roots; 0.5 very fine interstitial and tubular pores; 55 percent prominent , moist, slickensides (pedogenic) throughout; fragments; neutral, pH 7.2, phenol red; abrupt smooth boundary. Lab sample # 86P01343; moist when described;. Many intersecting slickensides 5 to 25 cm across and occuring at 3 to 5 cm intervals.; many intersecting slickensides surface features throughout; few very fine roots; continuous - phpvsfiid 231315; continuous - phpvsfiid 231315
    2Bw3—92 to 112 centimeters (36.2 to 44.1 inches); brown (10YR 5/3) interior, brown (10YR 4/3) interior, moist; sandy clay loam; weak coarse prismatic, and weak medium subangular blocky, and weak coarse subangular blocky structure; extremely hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 2.5 very fine interstitial and tubular pores; 1 percent fine spherical carbonate concretions; fragments; slightly alkaline, pH 7.4, phenol red; clear smooth boundary. Lab sample # 86P01344; dry when described;. few fine carbonate concretions concentrations; few very fine roots
    2Bw4—112 to 139 centimeters (44.1 to 54.7 inches); light yellowish brown (10YR 6/4) interior, dark yellowish brown (10YR 4/4) interior, moist; sandy loam; weak very coarse prismatic structure; extremely hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots; 2.5 very fine interstitial and tubular pores; 1 percent fine spherical carbonate concretions and 1 percent fine spherical carbonate masses; fragments; slightly alkaline, pH 7.4, phenol red; clear smooth boundary. Lab sample # 86P01345; dry when described;. few fine carbonate concretions concentrations; few fine soft masses of carbonate concentrations; few very fine roots
    2C—139 to 200 centimeters (54.7 to 78.7 inches); pale brown (10YR 6/3) interior, yellowish brown (10YR 5/4) interior, moist; coarse sandy loam; extremely hard, very friable, nonsticky, nonplastic; 0.5 very fine roots; 2.5 very fine interstitial and tubular and 2.5 fine interstitial and tubular pores; 1 percent fine spherical carbonate concretions and 1 percent fine spherical carbonate masses; fragments; slightly alkaline, pH 7.4, phenol red. Lab sample # 86P01346; dry when described;. few fine carbonate concretions concentrations; few fine soft masses of carbonate concentrations; few very fine roots