IDENTIFIERS

  • Current Taxon Name (Soil Name): Delfina
  • OSD
  • Series Extent
  • User Site ID: S1978TX215001
  • User Pedon ID: 78TX215001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 78P0414
  • NCSS Pedon Lab Data NASIS Record ID - 45968
  • Print Date: 3/2/2025

    • 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: 26.5305557
  • Std. Longitude: -98.1222229
  • Datum: WGS84
  • Location Description: Hidalgo County, TX La Coma ranch 3.7 km S of San Manuel on us 281 about 90 meters E on ranch rd and 15 meters S.
  • State: Texas
  • County: TX215—Hidalgo
  • MLRA: 83D—Lower Rio Grande Plain

    • PEDON

  • Current Taxonomic Class: Fine-loamy, mixed, superactive, hyperthermic Typic Paleustalfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Delfina
  • PSC - 33 to 73 cm.
  • Classificaton Date - 6/26/2015
  • Classifier - Gary Harris
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Delfina
  • Taxonomic Class - Fine-loamy, mixed, hyperthermic Aquic Haplustalf
  • Taxon Kind - series
  • Classificaton Date - 9/1/1978
  • Moisture Class - ustic
  • Moisture SUBClass - aquic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Landscape: hills
  • Landform: dune
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1978 (actual site observation date)
  • Surface Cover Properties:
  • 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

    natric horizon

    0—20

    33—267

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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

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    A1—0 to 20 centimeters (0.0 to 7.9 inches); brown (7.5YR 5/4) interior, brown (7.5YR 4/4) interior, moist; loamy fine sand; single grain; slightly hard, friable; 2.5 fine roots; fragments; neutral, pH 7.1; clear smooth boundary. Lab sample # 78P02291. common fine roots
    A2—20 to 33 centimeters (7.9 to 13.0 inches); brown (7.5YR 5/4) interior, brown (7.5YR 4/4) interior, moist; loamy fine sand; weak very coarse prismatic structure; slightly hard, friable; 2.5 fine roots; fragments; neutral, pH 6.7; abrupt smooth boundary. Lab sample # 78P02292. common fine roots
    Bt1—33 to 46 centimeters (13.0 to 18.1 inches); brown (10YR 4/3) interior, dark brown (10YR 3/3) interior, moist; sandy clay loam; 1 percent reddish yellow (5YR 6/8) fine distinct and 1 percent very dark grayish brown (10YR 3/2) faint mottles; moderate coarse prismatic, and moderate medium angular blocky structure; extremely hard, firm; 0.5 fine roots; clay films on vertical faces of peds; fragments; moderately alkaline, pH 7.9; gradual smooth boundary. Lab sample # 78P02293. few fine roots; few fine distinct 5YR68 mottles; few faint 10YR32 mottles; continuous - phpvsfiid 1191406; continuous - phpvsfiid 1191406
    Bt2—46 to 76 centimeters (18.1 to 29.9 inches); strong brown (7.5YR 5/6) interior, yellowish red (5YR 5/6) interior, moist; sandy clay loam; 1 percent yellowish brown (10YR 5/6) fine faint and 1 percent brown (7.5YR 5/3) fine faint mottles; weak coarse prismatic, and moderate medium subangular blocky structure; extremely hard, firm; 0.5 fine roots; clay films on vertical faces of peds; fragments; strongly alkaline, pH 8.5; clear smooth boundary. Lab sample # 78P02294. few fine roots; few fine faint 10YR56 mottles; few fine faint 7.5YR53 mottles; continuous - phpvsfiid 1191407; continuous - phpvsfiid 1191407
    Btk1—76 to 107 centimeters (29.9 to 42.1 inches); reddish yellow (7.5YR 7/6) interior, strong brown (7.5YR 5/6) interior, moist; sandy clay loam; moderate medium subangular blocky structure; very hard, firm; 15 percent clay films on vertical faces of peds; 11 percent lime masses; fragments; slight effervescence, by hcl, 1n; strongly alkaline, pH 9.0; gradual smooth boundary. Lab sample # 78P02295. common soft masses of lime concentrations; few clay films surface features on vertical faces of peds; patchy - phpvsfiid 1191408; patchy - phpvsfiid 1191408
    Btk2—107 to 142 centimeters (42.1 to 55.9 inches); reddish yellow (7.5YR 6/6) interior, strong brown (7.5YR 5/6) interior, moist; sandy clay loam; weak medium subangular blocky structure; very hard, firm; 1 percent lime masses; fragments; slight effervescence; strongly alkaline, pH 8.8; diffuse boundary. Lab sample # 78P02296. few soft masses of lime concentrations
    Btk3—142 to 170 centimeters (55.9 to 66.9 inches); reddish yellow (7.5YR 6/6) interior, strong brown (7.5YR 5/6) interior, moist; fine sandy loam; weak medium subangular blocky structure; very hard, firm; 15 percent skeletans on faces of peds; 11 percent lime masses; fragments; slight effervescence, by hcl, 1n; strongly alkaline, pH 8.6; diffuse boundary. Lab sample # 78P02297. common soft masses of lime concentrations; few skeletans (sand or silt) surface features on faces of peds
    Btk4—170 to 203 centimeters (66.9 to 79.9 inches); reddish yellow (7.5YR 6/6) interior, strong brown (7.5YR 5/6) interior, moist; fine sandy loam; weak medium subangular blocky structure; very hard, firm; 15 percent skeletans on faces of peds; 11 percent lime masses; fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.4; diffuse boundary. Lab sample # 78P02298. common soft masses of lime concentrations; few skeletans (sand or silt) surface features on faces of peds
    Btk5—203 to 267 centimeters (79.9 to 105.1 inches); reddish yellow (7.5YR 7/6) interior, reddish yellow (7.5YR 6/6) interior, moist; fine sandy loam; weak subangular blocky structure; hard, friable; 1 percent lime masses; fragments; slight effervescence; moderately alkaline, pH 8.3. Lab sample # 78P02299. few soft masses of lime concentrations