IDENTIFIERS

  • Current Taxon Name (Soil Name): Silawa
  • OSD
  • Series Extent
  • User Site ID: S1991TX395001
  • User Pedon ID: 91TX395001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 92P0387
  • NCSS Pedon Lab Data NASIS Record ID - 64626
  • Print Date: 12/17/2024

    • 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: 31.0327778
  • Std. Longitude: -96.6166687
  • Datum: WGS84
  • Location Description: on Rampy Ranch between Walnut to S Walnut Creeks (about 5 mi NE of Calvert)
  • State: Texas
  • County: TX395—Robertson
  • MLRA: 87—Texas Claypan Area

    • PEDON

  • Describers Name: Larry Wilding, Gayland Lane, Harold Hyde, Glen Che
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Silawa
  • Taxonomic Class - Fine-loamy, siliceous Ultic Haplustalfs
  • PSC - 46 to 94 cm.
  • Classificaton Date - 11/1/1991
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Slope Position: upper third
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/1/1991 (actual site observation date)
  • 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
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—30

    30—211

    —-

    —-
    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

    —

    —

    —

    —

    180

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 13 centimeters (0.0 to 5.1 inches); grayish brown (10YR 5/2) interior, dark grayish brown (10YR 4/2) interior, moist; very fine sand; weak fine subangular blocky structure; very friable; 5.5 fine roots throughout; 1 percent fine spherical worm nodules; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 92P02369; moist when described;. few fine worm nodules concentrations; many fine roots throughout
    A—13 to 20 centimeters (5.1 to 7.9 inches); brown (10YR 5/3) interior, brown (10YR 4/3) interior, moist; loamy fine sand; weak fine subangular blocky structure; very friable; 2.5 fine roots throughout; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 92P02370; moist when described;. common fine roots throughout
    E—20 to 28 centimeters (7.9 to 11.0 inches);, brown (7.5YR 4/3), moist; loamy fine sand; weak fine subangular blocky, and massive; very friable; 2.5 fine roots throughout; fragments; slightly acid, pH 6.5, hellige-truog; abrupt smooth boundary. Lab sample # 92P02371; wet when described;. common fine roots throughout
    Bt1—28 to 46 centimeters (11.0 to 18.1 inches);, yellowish red (5YR 4/6) interior and reddish brown (5YR 4/3) exterior, moist; sandy clay loam; moderate coarse platy, and weak medium subangular blocky structure; firm; 0.5 fine roots between peds; medium and coarse spherical ironstone nodules; 2 percent by volume 2-39-75 millimeter unspecified fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # 92P02372; moist when described;. few fine roots between peds
    Bt2—46 to 86 centimeters (18.1 to 33.9 inches);, red (2.5YR 4/6) interior and reddish brown (2.5YR 4/4) exterior, moist; sandy clay loam; moderate coarse platy, and moderate coarse angular blocky structure; firm; 0.5 fine roots between peds; 2.5 fine and medium tubular pores; medium and coarse spherical ironstone nodules; medium and coarse spherical silica concretions; 1 percent by volume 2-39-75 millimeter unspecified fragments and 2 percent by volume 2-39-75 millimeter unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear wavy boundary. Lab sample # 92P02373. few fine roots between peds
    2Bt3—86 to 97 centimeters (33.9 to 38.2 inches);, red (2.5YR 4/6) interior and strong brown (7.5YR 5/6) exterior, moist; gravelly sandy clay loam; moderate coarse platy, and moderate coarse angular blocky structure; very firm; 0.5 fine roots between peds; 2.5 fine and medium tubular pores; 20 percent by volume 2-39-75 millimeter unspecified fragments; moderately acid, pH 6.0, hellige-truog; clear wavy boundary. Lab sample # 92P02374. few fine roots between peds
    2Bt4—97 to 127 centimeters (38.2 to 50.0 inches);, red (2.5YR 4/8) interior and red (2.5YR 4/6) exterior and strong brown (7.5YR 5/6) exterior, moist; sandy clay loam; moderate coarse platy, and weak coarse angular blocky structure; firm; 0.5 fine roots between peds; 2.5 fine and medium tubular pores; medium and coarse spherical ironstone nodules; medium and coarse spherical silica concretions; 1 percent by volume 2-39-75 millimeter unspecified fragments and 5 percent by volume 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 92P02375. few fine roots between peds
    2Bt5—127 to 160 centimeters (50.0 to 63.0 inches);, red (2.5YR 4/8) interior and red (2.5YR 4/6) exterior and strong brown (7.5YR 5/6) exterior, moist; sandy clay loam; weak coarse platy structure; firm; 0.5 fine roots between peds; 2.5 fine and medium tubular pores; medium and coarse spherical ironstone nodules; medium and coarse spherical silica concretions; 1 percent by volume 2-39-75 millimeter unspecified fragments and 5 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # 92P02376. few fine roots between peds
    2Bt6—160 to 180 centimeters (63.0 to 70.9 inches);, yellowish red (5YR 5/8) interior and strong brown (7.5YR 5/6) exterior, moist; sandy clay loam; 11 percent red (2.5YR 5/8) medium prominent mottles; weak coarse platy structure; firm; 2.5 fine and medium tubular pores; medium and coarse spherical ironstone nodules and 1 percent fine spherical iron concretions; 5 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 92P02377. few fine iron concretions concentrations; common medium prominent 2.5YR58 mottles
    3BCt—180 to 211 centimeters (70.9 to 83.1 inches);, yellowish red (5YR 4/6) interior, moist; gravelly fine sandy loam; 11 percent reddish yellow (7.5YR 6/8) medium prominent mottles; weak fine and medium subangular blocky structure; firm; fragments; clear smooth boundary. Lab sample # 92P02378. common medium prominent 7.5YR68 mottles
    3BC—211 to 218 centimeters (83.1 to 85.8 inches);, red (2.5YR 4/6) interior, moist; loam; weak medium subangular blocky structure; friable; fragments. Lab sample # 92P02379
    4C1—218 to 239 centimeters (85.8 to 94.1 inches);, yellowish red (5YR 5/8) interior, moist; fine sandy loam; 11 percent brownish yellow (10YR 6/8) medium distinct mottles; weak medium subangular blocky structure; friable; fragments. Lab sample # 92P02380. common medium distinct 10YR68 mottles
    4C2—239 to 269 centimeters (94.1 to 105.9 inches);, strong brown (7.5YR 5/8) interior, moist; fine sandy loam; weak medium subangular blocky structure; friable; fragments. Lab sample # 92P02381
    5C1—269 to 348 centimeters (105.9 to 137.0 inches);, brownish yellow (10YR 6/8) interior and very pale brown (10YR 8/2) interior, moist; loamy fine sand; very friable; fragments. Lab sample # 92P02382
    5C2—348 to 386 centimeters (137.0 to 152.0 inches);, brownish yellow (10YR 6/8) interior, moist; fine sandy loam; 11 percent very pale brown (10YR 8/2) medium distinct mottles; weak medium subangular blocky structure; friable; fragments. Lab sample # 92P02383. common medium distinct 10YR82 mottles