IDENTIFIERS

  • Current Taxon Name (Soil Name): WILLACY
  • OSD
  • Series Extent
  • User Site ID: S1997TX489005
  • User Pedon ID: 97TX489005
  • Vegetation Plot ID: S1997TX489005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0182
  • NCSS Pedon Lab Data NASIS Record ID - 10453
  • 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: 26.3987770
  • Std. Longitude: -97.7161942
  • Datum: WGS84
  • Location Description: From the junction of US 77 and FR 489 go east 4 miles to the junction of FR 489 and FR 2099 then go south .15 miles on FR 2099 then east 850 feet into cropland.
  • State: Texas
  • County: TX489—Willacy
  • MLRA: 83D—Lower Rio Grande Plain
  • Non-MLRA Soil Survey Area: TX489—Willacy County, Texas
  • 7.5 Minute USGS Quad: 26097-D6—San Perlita South, Texas

    • PEDON

  • Describers Name: R. Molina, P. Holland, M. Golden, D. Brezina, S. Dunn, A. Stahnke
  • Current Taxonomic Class: Fine-loamy, mixed, hyperthermic Udic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: research site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Sampled As Information:
  • Soil Name - WILLACY
  • Taxonomic Class - Fine-loamy, mixed, hyperthermic Udic Argiustolls
  • PSC - 34 to 84 cm.
  • Classificaton Date - 12/3/1997
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: coastal plain
  • Landform: coastal plain
  • Anthropogenic Feature: leveled land
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: very low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/3/1997 (actual site observation date)
  • Air Photo ID: A.S. 24
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: wind and water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    SOBIB

    SOBIB

    Sorghum bicolor ssp. bicolor

    Sorghum bicolor ssp. bicolor

    grain sorghum

    grain sorghum

    —

    —

    —

    —

    —

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

    mollic epipedon

    argillic horizon

    calcic horizon

    0—48

    34—161

    133—161

    —-

    —-

    —-
    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

    0

    134

    67

    10

    —

    135

    700

    —

    —

    23

    26

    16

    —

    —

    —

    —

    —

    —

    —

    —
    Ap1—0 to 18 centimeters (0.0 to 7.1 inches);, very dark grayish brown (10YR 3/2), moist; fine sandy loam; weak medium subangular blocky parts to weak medium granular structure; friable; 21.0 very fine and fine roots throughout and 3.0 medium roots throughout; 3.0 very fine and fine pores; fragments; noneffervescent; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # 98P01153. 15% by volume, 10YR 6/4 randomly mixed sand lenses.
    Ap2—18 to 34 centimeters (7.1 to 13.4 inches);, very dark gray (10YR 3/1), moist; fine sandy loam; weak medium subangular blocky parts to moderate medium granular structure; friable; fragments. Lab sample # 98P01154
    Bt1—34 to 48 centimeters (13.4 to 18.9 inches); fragments. Lab sample # 98P01155
    Bt2—48 to 74 centimeters (18.9 to 29.1 inches);, brown (7.5YR 4/2), moist; sandy clay loam; weak coarse prismatic parts to moderate medium subangular blocky structure; friable; 3.0 very fine and fine roots throughout and 3.0 medium roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 1 percent faint dark brown (7.5YR 3/2) organic stains on faces of peds and 10 percent faint brown (7.5YR 4/2) clay films on faces of peds; 3 percent medium and coarse cylindrical worm casts throughout; fragments; noneffervescent; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 98P01156. 1% by volume, 10YR 6/4 sand lenses along ped faces.; patchy - phpvsfiid 203003; discontinuous - phpvsfiid 203002; patchy - phpvsfiid 203003; discontinuous - phpvsfiid 203002
    Bt3—74 to 107 centimeters (29.1 to 42.1 inches);, brown (7.5YR 4/3), moist; sandy clay loam; 1 percent brown (7.5YR 5/4) fine faint mottles; moderate coarse prismatic parts to moderate coarse angular blocky structure; friable; 3.0 very fine and fine roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 1 percent faint dark brown (7.5YR 3/2) organic stains on faces of peds and 10 percent faint dark brown (7.5YR 3/3) clay films on faces of peds; 3 percent medium and coarse cylindrical worm casts throughout; fragments; noneffervescent; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 98P01157. 1% by volume, 10YR 6/4 sand lenses along ped faces.; discontinuous - phpvsfiid 203004; continuous - phpvsfiid 201524; discontinuous - phpvsfiid 203004; continuous - phpvsfiid 201524
    Bt4—107 to 133 centimeters (42.1 to 52.4 inches);, 60 percent brown (7.5YR 4/3) and 40 percent brown (7.5YR 5/4), moist; sandy clay loam; moderate coarse prismatic parts to moderate coarse subangular blocky structure; friable; 3.0 very fine and fine roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 1 percent distinct very dark grayish brown (10YR 3/2) organic stains on faces of peds and 10 percent faint brown (7.5YR 5/4) clay films on faces of peds; 3 percent fine threadlike carbonate threads throughout and 3 percent medium and coarse cylindrical worm casts throughout; fragments; slight effervescence; moderately alkaline, pH 8.2, hellige-truog; abrupt smooth boundary. Lab sample # 98P01158. 2% by volume, 10YR 6/4 sand lenses along ped faces.; discontinuous - phpvsfiid 201525; discontinuous - phpvsfiid 201526; discontinuous - phpvsfiid 201525; discontinuous - phpvsfiid 201526
    Btk—133 to 161 centimeters (52.4 to 63.4 inches);, light brown (7.5YR 6/4), moist; sandy clay loam; moderate coarse prismatic parts to moderate coarse subangular blocky structure; friable; 3.0 very fine and fine roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 1 percent distinct very dark grayish brown (10YR 3/2) organic stains on faces of peds and 10 percent faint brown (7.5YR 5/4) clay films on faces of peds; 3 percent fine threadlike noncoherent cemented carbonate threads throughout and 3 percent fine and medium irregular carbonate masses throughout and 3 percent fine and medium spherical carbonate concretions throughout and 3 percent medium cylindrical worm casts throughout; fragments; violent effervescence; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 98P01159. patchy - phpvsfiid 201527; patchy - phpvsfiid 201528; patchy - phpvsfiid 201527; patchy - phpvsfiid 201528
    Bkz—161 to 200 centimeters (63.4 to 78.7 inches);, light brown (7.5YR 6/4), moist; fine sandy loam; weak coarse prismatic parts to weak coarse subangular blocky structure; friable; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 3 percent fine and medium spherical noncoherent cemented carbonate masses throughout; fragments. Lab sample # 98P01160