IDENTIFIERS

  • Current Taxon Name (Soil Name): Aluf
  • OSD
  • Series Extent
  • User Site ID: S07TX0290001
  • User Pedon ID: S07TX0290001
  • Vegetation Plot ID: S07TX0290001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - TAMU
  • Lab Pedon # - S07TX029001
  • NCSS Pedon Lab Data NASIS Record ID - 45580
  • Print Date: 2/16/2025

    • 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: 29.1928310
  • Std. Longitude: -98.4145279
  • Datum: WGS84
  • State: Texas
  • County: TX029—Bexar
  • MLRA: 87A—Texas Claypan Area, Southern Part
  • 7.5 Minute USGS Quad: 29098-B4—Losoya, Texas

    • PEDON

  • Describers Name: RMR, MLJ, NIH, JLS3, THW
  • Current Taxonomic Class: Sandy, siliceous, hyperthermic Lamellic Quartzipsamments
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: PedonPC
  • Correlated Information:
  • Soil Name - Aluf
  • PSC - 25 to 100 cm.
  • Classificaton Date - 5/21/2012
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Aluf
  • Classificaton Date - 3/1/2007
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: sandy eolian deposits
  • Landscape: inland dissected coastal plain
  • Landform: ridge
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: lower third
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: negligible
  • Drainage Class: somewhat excessively
  • Geology: Ec formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/1/2007 (actual site observation date)
  • Air Photo ID:
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - rangeland, shrubby
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Yield Study ID -
  • Current Weather - sunny
  • Current Air Temp - 22
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    A

    E1

    E2

    EBt

    E and Bt1

    E and Bt2

    0

    10

    35

    73

    96

    158

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    0.3

    0.3

    0.4

    0.3

    0.4

    0.3

    5.4

    5.6

    5.3

    5.1

    5.3

    5.7

    39.3

    39.1

    38.4

    39.5

    40.9

    40.7

    42.2

    42.4

    43.3

    42.6

    40.9

    40.4

    6.4

    6.3

    6.4

    6.3

    6.1

    5.9

    270 mesh sieve

    270 mesh sieve

    270 mesh sieve

    270 mesh sieve

    270 mesh sieve

    270 mesh sieve

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    A

    E1

    E2

    EBt

    E and Bt1

    E and Bt2

    0

    10

    35

    73

    96

    158

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    A

    E1

    E2

    EBt

    E and Bt1

    E and Bt2

    0

    10

    35

    73

    96

    158

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CARYA

    CENCH

    CRCA6

    DIOLS

    LUSU

    OPUNT

    QUIN

    QUMA3

    QUST

    QUVI

    SPCR

    TRFL2

    YUCCA

    Carya

    Cenchrus

    Croton capitatus

    Dichanthelium oligosanthes var. scribnerianum

    Lupinus subcarnosus

    Opuntia

    Quercus incana

    Quercus marilandica

    Quercus stellata

    Quercus virginiana

    Sporobolus cryptandrus

    Tridens flavus

    Yucca

    hybrid hickory

    sandbur

    hogwort

    Scribner's rosette grass

    Texas bluebonnet

    pricklypear

    bluejack oak

    blackjack oak

    post oak

    live oak

    sand dropseed

    purpletop tridens

    yucca

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

    ochric epipedon

    lamellae

    0—10

    73—203

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    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    3/1/2007

    50

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    21
    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

    2.3

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    170

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    90

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    A—0 to 10 centimeters (0.0 to 3.9 inches); yellowish brown (10YR 5/4) sand; 94 percent sand; 5 percent silt; 1 percent clay; structureless massive; loose, loose, nonsticky, nonplastic; 10.0 very fine roots throughout and 4.0 medium roots throughout and 10.0 fine roots throughout and 1.0 coarse roots throughout; 3.0 fine low-continuity dendritic tubular pores; fragments; noneffervescent; slightly acid, pH 6.3, pH meter; clear smooth boundary. Lab sample # TAMU7224; moist when described; observed in pit, small
    E1—10 to 35 centimeters (3.9 to 13.8 inches); yellowish brown (10YR 5/4) sand; 94 percent sand; 5 percent silt; 2 percent clay; weak medium subangular blocky structure; loose, very friable, nonsticky, nonplastic; 1.0 very fine roots throughout and 3.0 medium roots throughout and 4.0 fine roots throughout and 1.0 coarse roots throughout; low-continuity interstitial pores; fragments; noneffervescent; slightly acid, pH 6.1, pH meter; clear wavy boundary. Lab sample # TAMU7225; moist when described; observed in pit, small
    E2—35 to 73 centimeters (13.8 to 28.7 inches); light yellowish brown (10YR 6/4) sand; 94 percent sand; 5 percent silt; 2 percent clay; weak medium subangular blocky structure; loose, very friable, nonsticky, nonplastic; 1.0 very coarse roots throughout and 1.0 medium roots throughout and 4.0 fine roots throughout and 1.0 coarse roots throughout; low-continuity interstitial pores; fragments; noneffervescent; slightly acid, pH 6.1, pH meter; clear wavy boundary. Lab sample # TAMU7226; moist when described; observed in pit, small
    EBt—73 to 96 centimeters (28.7 to 37.8 inches); 95 percent light yellowish brown (10YR 6/4) and 5 percent yellowish red (5YR 5/6) sand, sandy loam; 94 percent sand; 4 percent silt; 2 percent clay; weak coarse prismatic structure; loose, very friable, nonsticky, nonplastic; 20.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 4.0 fine low-continuity dendritic tubular pores; fragments; noneffervescent; slightly acid, pH 6.1, pH meter; clear wavy boundary. Lab sample # TAMU7227; moist when described; observed in pit, small. lamella 1 mm, 1 cm apart
    E and Bt1—96 to 158 centimeters (37.8 to 62.2 inches); 90 percent light yellowish brown (10YR 6/4) and 10 percent yellowish red (5YR 5/6) sand, sandy loam; 94 percent sand; 4 percent silt; 2 percent clay; weak medium subangular blocky structure; loose, very friable, nonsticky, nonplastic; 2.0 medium roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; 4.0 fine low-continuity interstitial pores; fragments; noneffervescent; moderately acid, pH 5.8, pH meter; clear wavy boundary. Lab sample # TAMU7228; moist when described; observed in pit, small. 8 lamella 2-4 mm
    E and Bt2—158 to 203 centimeters (62.2 to 79.9 inches); 85 percent very pale brown (10YR 7/4) and 15 percent yellowish red (5YR 4/6) sand, sandy loam; 93 percent sand; 4 percent silt; 3 percent clay; weak medium subangular blocky structure; loose, very friable, nonsticky, nonplastic; 1.0 medium roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; low-continuity interstitial pores; fragments; noneffervescent; strongly acid, pH 5.2, pH meter. Lab sample # TAMU7229; moist when described; observed in pit, small. 6 lamella 5 mm, 3-11 cm apart