IDENTIFIERS

  • Current Taxon Name (Soil Name): Atiras
  • OSD
  • Series Extent
  • User Site ID: S98TX261005
  • User Pedon ID: S98TX261005
  • Transect:
  • Transect Stop Number - 5
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - TAMU
  • Lab Pedon # - S98TX261005
  • NCSS Pedon Lab Data NASIS Record ID - 45733
  • 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: 27.1750298
  • Std. Longitude: -97.7459259
  • Datum: WGS84
  • Location Description: Kenedy County, Texas; From the intersection of U.S. Highway 77 and La Parra Avenue in Sarita; 4.8 miles south on U.S. Highway 77; 2.13 miles east on ranch road; 1.7 miles north and northeast on ranch road; .43 mile east along pipeline right-of-way; 500 feet southeast along fenceline; 150 feet south in rangeland; La Parra Ranch, Texas USGS topogrphic quadrangle.
  • Map Unit: FmC—Falfurrias-Atiras-Medanito complex, 0 to 5 percent slopes
  • MLRA: 83E—Sandsheet Prairie
  • Non-MLRA Soil Survey Area: TX613—Kenedy and Kleberg Counties, Texas

    • PEDON

  • Describers Name: DNB, ALS, PDH. SMD, RM, CLN, CTH
  • Current Taxonomic Class: Mixed, hyperthermic Typic Ustipsamments
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Atiras
  • PSC - 25 to 100 cm.
  • Classificaton Date - 5/21/2012
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Atiras
  • Classificaton Date - 12/15/1998
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: sandy eolian deposits
  • Runoff: negligible
  • Drainage Class: moderately well
  • Flooding: rare flooding for extremely brief periods
  • Geology: Sandsheet Prairie formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/15/1998 (actual site observation date)
  • Air Photo ID: 32D
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - sunny
    • 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 % % % % % % % % % % % % %

    Bb1

    Bb2

    Bb3

    155

    169

    186

    169

    186

    200

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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

    Bb1

    Bb2

    Bb3

    155

    169

    186

    169

    186

    200

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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 %

    Bb1

    Bb2

    Bb3

    155

    169

    186

    169

    186

    200

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    5

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    8

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    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

    3

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    35

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    A1—0 to 21 centimeters (0.0 to 8.3 inches); brown (10YR 4/3), brown (10YR 5/3), dry; fine sand; 96 percent sand; 2 percent silt; 2 percent clay; structureless single grain; loose; 3.0 very fine roots throughout and 3.0 fine roots throughout and 1.0 coarse roots throughout; fragments; noneffervescent; moderately acid, pH 5.9; gradual smooth boundary. Lab sample # TAMU6329
    A2—21 to 42 centimeters (8.3 to 16.5 inches); brown (10YR 5/3), pale brown (10YR 6/3), dry; fine sand; 97 percent sand; 1 percent silt; 2 percent clay; structureless single grain; loose; 3.0 very fine roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; fragments; noneffervescent; moderately acid, pH 6.0; clear smooth boundary. Lab sample # TAMU6330
    C1—42 to 70 centimeters (16.5 to 27.6 inches); brown (10YR 5/3), pale brown (10YR 6/3), dry; fine sand; 98 percent sand; 1 percent silt; 2 percent clay; structureless single grain; loose; 3.0 very fine roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; 1 percent medium distinct yellowish brown (10YR 5/6), moist, masses of oxidized iron and 2 percent fine distinct yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent; moderately acid, pH 6.0; gradual smooth boundary. Lab sample # TAMU6331
    C2—70 to 114 centimeters (27.6 to 44.9 inches); light brownish gray (10YR 6/2), light gray (10YR 7/2), dry; fine sand; 99 percent sand; 1 percent clay; structureless single grain; loose; 2.0 very fine roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; 2 percent medium distinct yellowish brown (10YR 5/8), moist, masses of oxidized iron and 3 percent fine distinct yellowish brown (10YR 5/8), moist, masses of oxidized iron; fragments; noneffervescent; slightly acid, pH 6.3; gradual smooth boundary. Lab sample # TAMU6332
    C3—114 to 149 centimeters (44.9 to 58.7 inches); light brownish gray (10YR 6/2), light gray (10YR 7/2), dry; fine sand; 99 percent sand; 1 percent clay; structureless single grain; loose; 2.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 1 percent fine distinct dark yellowish brown (10YR 4/6), moist, masses of oxidized iron and 2 percent fine distinct yellowish brown (10YR 5/4), moist, masses of oxidized iron; fragments; noneffervescent; slightly acid, pH 6.4; very abrupt smooth boundary. Lab sample # TAMU6333
    Ab—149 to 155 centimeters (58.7 to 61.0 inches); very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dry; fine sand; 89 percent sand; 4 percent silt; 7 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; slightly hard, very friable; 2.0 very fine roots throughout and 2.0 fine roots throughout; 2.0 fine interstitial pores; 2 percent fine distinct yellowish brown (10YR 5/4) masses of oxidized iron; fragments; noneffervescent; slightly acid, pH 6.2; clear smooth boundary. Lab sample # TAMU6334
    Bb1—155 to 169 centimeters (61.0 to 66.5 inches); dark grayish brown (10YR 4/2), light brownish gray (10YR 6/2), dry; loamy fine sand; 86 percent sand; 5 percent silt; 9 percent clay; weak medium subangular blocky, and weak coarse prismatic parts to weak coarse subangular blocky structure; hard, very friable; 1.0 very fine roots throughout and 1.0 fine roots throughout; 2.0 fine interstitial pores; 5 percent fine distinct yellowish brown (10YR 5/4) masses of oxidized iron; fragments; noneffervescent; slightly acid, pH 6.5; clear smooth boundary. Lab sample # TAMU6335
    Bb2—169 to 186 centimeters (66.5 to 73.2 inches); grayish brown (10YR 5/2), light brownish gray (10YR 6/2), dry; fine sandy loam; 81 percent sand; 6 percent silt; 13 percent clay; weak medium subangular blocky, and weak coarse prismatic parts to weak coarse subangular blocky structure; hard, friable; 1.0 very fine roots throughout and 1.0 fine roots throughout; 2.0 fine interstitial pores; 2 percent medium distinct yellowish brown (10YR 5/6) masses of oxidized iron and 3 percent fine distinct yellowish brown (10YR 5/6) masses of oxidized iron and 10 percent medium distinct yellowish brown (10YR 5/4) masses of oxidized iron; fragments; noneffervescent; neutral, pH 7.0; gradual smooth boundary. Lab sample # TAMU6336
    Bb3—186 to 200 centimeters (73.2 to 78.7 inches); light brownish gray (2.5Y 6/2), light gray (2.5Y 7/2), dry; loamy fine sand; 83 percent sand; 4 percent silt; 13 percent clay; weak medium subangular blocky, and weak coarse subangular blocky structure; hard, friable; 1.0 very fine roots throughout and 1.0 fine roots throughout; 2.0 fine vesicular pores; 1 percent fine distinct yellowish brown (10YR 5/6) masses of oxidized iron and 1 percent medium distinct yellowish brown (10YR 5/6) masses of oxidized iron and 1 percent irregular black (10YR 2/1) iron-manganese masses and 8 percent coarse distinct yellowish brown (10YR 5/4) masses of oxidized iron; fragments; noneffervescent; neutral, pH 7.2. Lab sample # TAMU6337