IDENTIFIERS

  • Current Taxon Name (Soil Name): Cotulla
  • OSD
  • Series Extent
  • User Site ID: S1992TX297001
  • User Pedon ID: 92TX297001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 93P0259
  • NCSS Pedon Lab Data NASIS Record ID - 65602
  • Print Date: 5/19/2024

    • 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: 28.2788887
  • Std. Longitude: -98.2263870
  • Datum: WGS84
  • Location Description: From the intersection of US Highway 281 and US Highway 59 in George West; 2.4 miles on US Highway 281 to Farm Road 889; then 7.8 miles SW on Farm Road 889; site is 1000 feet SE into pasture.
  • State: Texas
  • County: TX297—Live Oak
  • MLRA: 83C—Central Rio Grande Plain
  • Non-MLRA Soil Survey Area: TX297—Liveoak County, Texas

    • PEDON

  • Describers Name: CLN,ACT,RM,PH
  • Current Taxonomic Class: Fine, smectitic, hyperthermic Sodic Haplusterts
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Cotulla
  • PSC - 25 to 102 cm.
  • Classificaton Date - 1/17/2014
  • Classifier - James Akin And Clark Harshbarger
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Cotulla
  • Taxonomic Class - Fine, montmorillonitic Vertic Ustochrepts
  • Taxon Kind - series
  • Classificaton Date - 11/2/1992
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Landscape: upland
  • Landform: hillside
  • Microfeature: gilgai
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: footslope
  • Slope Position: middle third
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/2/1992 (actual site observation date)
  • Air Photo ID: AS-41
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - native shrubs
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    cambic horizon

    calcic horizon

    gypsic horizon

    0—18

    18—30

    30—86

    132—203

    —-

    —-

    —-

    —-
    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

    213

    91

    94

    —

    135

    711

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; sandy clay loam; moderate medium subangular blocky structure; hard, very firm; 2.0 very fine and fine roots throughout; 2.0 fine pores; 1 percent fine and medium cylindrical insect casts; fragments; slight effervescence; moderately alkaline, pH 8.1; abrupt wavy boundary. Lab sample # 93P02126
    Bw—18 to 30 centimeters (7.1 to 11.8 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay loam; moderate medium angular blocky structure; extremely hard, very firm; 2.0 very fine and fine roots throughout; 2.0 fine pores; 6 percent pressure faces; 1 percent fine and medium cylindrical insect casts; fragments; strong effervescence; moderately alkaline, pH 8.4; clear smooth boundary. Lab sample # 93P02127
    Bk—30 to 46 centimeters (11.8 to 18.1 inches); light brownish gray (10YR 6/2), grayish brown (10YR 5/2), moist; clay; moderate coarse prismatic, and strong medium angular blocky structure; extremely hard, very firm; 0.5 medium roots throughout and 2.0 fine roots throughout; 0.5 fine pores; 6 percent pressure faces; 3 percent fine carbonate masses and 2 percent fine and medium carbonate concretions; fragments; strong effervescence; strongly alkaline, pH 8.9; clear smooth boundary. Lab sample # 93P02128
    Bknss1—46 to 66 centimeters (18.1 to 26.0 inches); light brownish gray (10YR 6/2), grayish brown (10YR 5/2), moist; clay; moderate coarse prismatic, and strong medium angular blocky structure; extremely hard, very firm; 0.5 fine roots throughout; 0.5 fine pores; 26 percent nonintersecting slickensides and 51 percent pressure faces; 6 percent fine and medium carbonate masses; fragments; strong effervescence; strongly alkaline, pH 8.7; gradual smooth boundary. Lab sample # 93P02129
    Bknss2—66 to 86 centimeters (26.0 to 33.9 inches); light brownish gray (10YR 6/2), grayish brown (10YR 5/2), moist; clay; moderate coarse prismatic, and moderate medium angular blocky, and moderate medium subangular blocky structure; extremely hard, very firm; 0.5 fine roots throughout; 0.5 fine tubular pores; 6 percent pressure faces; 3 percent fine carbonate masses; fragments; strong effervescence; moderately alkaline, pH 8.4; gradual smooth boundary. Lab sample # 93P02130
    Bknss3—86 to 132 centimeters (33.9 to 52.0 inches); brown (10YR 5/3), brown (10YR 5/3), moist; clay; moderate medium subangular blocky structure; extremely hard, very firm; 0.5 fine roots; 0.5 fine tubular pores; 1 percent insect casts and 1 percent fine carbonate masses; fragments; strong effervescence; moderately alkaline, pH 8.3; clear smooth boundary. Lab sample # 93P02131
    Bnssy1—132 to 188 centimeters (52.0 to 74.0 inches); pale brown (10YR 6/3), brown (10YR 5/3), moist; clay; moderate coarse prismatic, and moderate medium subangular blocky, and moderate fine angular blocky structure; extremely hard, very firm; 0.5 fine roots; 0.5 fine tubular pores; 6 percent nonintersecting slickensides and 6 percent pressure faces; 5 percent fine and medium gypsum crystals, unspecified and 5 percent fine and medium gypsum masses; fragments; strong effervescence; moderately alkaline, pH 8.0; gradual smooth boundary. Lab sample # 93P02132
    Bnssy2—188 to 203 centimeters (74.0 to 79.9 inches); brown (7.5YR 5/4), brown (7.5YR 5/4), moist; clay; 1 percent strong brown (7.5YR 5/6) medium faint mottles; weak coarse prismatic, and weak medium subangular blocky structure; very hard, very firm; 0.5 fine roots; 0.5 fine tubular pores; 6 percent pressure faces and 10 percent manganese or iron-manganese stains on faces of peds and 51 percent nonintersecting slickensides; 1 percent fine irregular iron-manganese masses; 1 percent medium gypsum crystals, unspecified and 1 percent medium gypsum masses; fragments; strong effervescence; neutral, pH 6.7. Lab sample # 93P02133