IDENTIFIERS

  • Current Taxon Name (Soil Name): WILLACY
  • OSD
  • Series Extent
  • User Site ID: S1997TX489001
  • User Pedon ID: 97TX489001
  • Vegetation Plot ID: S1997TX489001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0178
  • NCSS Pedon Lab Data NASIS Record ID - 10449
  • 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: 26.3999443
  • Std. Longitude: -97.7189178
  • Datum: WGS84
  • Location Description: From the junction of US 77 and FR 498, GO 4 miles East on FR 2099, Go 275 feet south on FR 2099 then 145 feet East 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, A. Stahnke, S. Dunn
  • 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 #: 1
  • Sampled As Information:
  • Soil Name - WILLACY
  • Taxonomic Class - Fine-loamy, mixed Udic Argiustolls
  • PSC - 36 to 86 cm.
  • Classificaton Date - 12/2/1997
  • 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: footslope
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: very low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/2/1997 (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—47

    36—123

    123—180

    —-

    —-

    —-
    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

    1

    200

    167

    3

    —

    158

    700

    —

    —

    23

    26

    16

    —

    —

    —

    —

    —

    —

    —

    —
    Ap1—0 to 19 centimeters (0.0 to 7.5 inches);, very dark grayish brown (10YR 3/2), moist; fine sandy loam; weak fine subangular blocky parts to weak fine granular structure; soft, very friable; 21.0 fine and medium roots throughout; 3.0 fine pores; fragments; noneffervescent; slightly acid, pH 6.3, hellige-truog; abrupt smooth boundary. Lab sample # 98P01122
    Ap2—19 to 36 centimeters (7.5 to 14.2 inches);, very dark gray (10YR 3/1), moist; fine sandy loam; weak fine and medium subangular blocky structure; soft, very friable; 3.0 fine and medium roots throughout; 3.0 fine and medium pores; 1 percent silt coats on faces of peds and in pores; fragments; noneffervescent; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 98P01123
    Bt1—36 to 47 centimeters (14.2 to 18.5 inches);, very dark gray (10YR 3/1), moist; sandy clay loam; moderate medium subangular blocky structure; slightly hard, very friable; 3.0 very fine roots between peds and 3.0 fine and medium roots throughout; 21.0 fine and medium and 3.0 coarse pores; 10 percent faint very dark gray (10YR 3/1) clay films on faces of peds and in pores; 3 percent fine cylindrical worm casts throughout; fragments; noneffervescent; slightly alkaline, pH 7.6, hellige-truog; abrupt smooth boundary. Lab sample # 98P01124. continuous - phpvsfiid 201692; continuous - phpvsfiid 201692
    Bt2—47 to 88 centimeters (18.5 to 34.6 inches);, dark grayish brown (10YR 4/2), moist; sandy clay loam; moderate fine and medium prismatic parts to moderate medium and coarse angular blocky structure; friable; 21.0 fine and medium roots throughout; 21.0 fine and medium and 3.0 coarse pores; 10 percent faint very dark grayish brown (10YR 3/2) clay films on faces of peds; 3 percent fine spherical worm casts throughout; fragments; noneffervescent; slightly alkaline, pH 7.6, hellige-truog; clear smooth boundary. Lab sample # 98P01125. continuous - phpvsfiid 201693; continuous - phpvsfiid 201693
    Bt3—88 to 109 centimeters (34.6 to 42.9 inches);, brown (10YR 4/3), moist; sandy clay loam; strong coarse prismatic parts to strong coarse angular blocky structure; friable; 3.0 very fine roots between peds and 3.0 fine and medium roots between peds; 21.0 fine and medium and 3.0 coarse pores; 1 percent faint dark grayish brown (10YR 4/2) organic stains and 10 percent faint dark grayish brown (10YR 4/2) clay films on faces of peds and in pores; 3 percent fine and medium cylindrical worm casts throughout; fragments; noneffervescent; slightly alkaline, pH 7.6, hellige-truog; clear smooth boundary. Lab sample # 98P01126. discontinuous - phpvsfiid 203069; continuous - phpvsfiid 203068; discontinuous - phpvsfiid 203069; continuous - phpvsfiid 203068
    Btk—109 to 123 centimeters (42.9 to 48.4 inches);, brown (7.5YR 5/4), moist; sandy clay loam; weak medium prismatic parts to moderate medium subangular blocky structure; friable; 3.0 fine and medium roots between peds; 21.0 fine and medium and 3.0 coarse pores; 10 percent faint brown (7.5YR 4/4) clay films on faces of peds and in pores; 3 percent fine threadlike carbonate threads throughout and 3 percent fine and medium spherical carbonate masses throughout and 3 percent medium spherical very dark gray (10YR 3/1) worm casts throughout; fragments; violent effervescence; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 98P01127. discontinuous - phpvsfiid 203070; discontinuous - phpvsfiid 203070
    Bk1—123 to 180 centimeters (48.4 to 70.9 inches);, brown (7.5YR 5/4), moist; sandy clay loam; moderate coarse prismatic parts to moderate medium subangular blocky structure; friable; 3.0 fine and medium roots between peds; 21.0 fine and medium and 3.0 coarse pores; 1 percent faint brown (7.5YR 4/4) clay films on faces of peds and in pores; 3 percent fine spherical carbonate concretions throughout and 3 percent medium spherical carbonate masses throughout and 3 percent medium cylindrical worm casts throughout; fragments; violent effervescence; moderately alkaline, pH 8.2, hellige-truog; clear smooth boundary. Lab sample # 98P01128. patchy - phpvsfiid 203071; patchy - phpvsfiid 203071
    Bk2—180 to 200 centimeters (70.9 to 78.7 inches);, brown (7.5YR 5/4), moist; fine sandy loam; weak coarse prismatic parts to moderate medium subangular blocky structure; friable; 3.0 fine roots between peds; 21.0 fine and medium and 21.0 coarse pores; 1 percent faint brown (7.5YR 4/4) clay films on faces of peds and 1 percent distinct very pale brown (10YR 7/3) skeletans throughout; 1 percent fine cylindrical dark grayish brown (10YR 4/2) worm casts throughout and 3 percent fine and medium cylindrical carbonate masses throughout; fragments; violent effervescence; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 98P01129. discontinuous - phpvsfiid 203073; patchy - phpvsfiid 203072; discontinuous - phpvsfiid 203073; patchy - phpvsfiid 203072