IDENTIFIERS

  • Current Taxon Name (Soil Name): CALHOUN
  • OSD
  • Series Extent
  • User Site ID: S1961LA033008
  • User Pedon ID: S1961LA033008
  • Vegetation Plot ID: S1961LA033008
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A1323
  • NCSS Pedon Lab Data NASIS Record ID - 34932
  • Print Date: 2/16/2025

    • 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: 30.3775005
  • Std. Longitude: -91.0916672
  • Datum: WGS84
  • Township: 8S
  • Range: 1E
  • Section: 57
  • PLSS Details: 1 1/10 mile W of intersection of Perkins Rd. and Siegen Rd. and 200 feet N of Perkins Rd., SW part
  • Location Description: East Baton Rouge Parish, LA., about 2 mi E of Baton Rouge.
  • State: Louisiana
  • County: LA033—East Baton Rouge
  • MLRA: 134—Southern Mississippi Valley Loess
  • Regional Office: 7—Auburn, AL
  • Non-MLRA Soil Survey Area: LA033—East Baton Rouge Parish, Louisiana

    • PEDON

  • Describers Name: J.S. Allen, D.C. McMurtry, Leon Nugent, H.L. Clark, J.E. Seaholm, and S.A. Lytle
  • Current Taxonomic Class: Fine-silty, mixed, thermic Typic Glossaqualfs
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 8
  • Correlated Information:
  • Soil Name - CALHOUN
  • PSC - 41 to 91 cm.
  • Classificaton Date - 7/16/2007
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Calhoun
  • Classificaton Date - 5/11/1961
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/11/1961 (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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    AXONO

    CAREX

    CYNOD

    PADI3

    PAUR2

    PAUR2

    Axonopus

    Carex

    Cynodon

    Paspalum dilatatum

    Paspalum urvillei

    Paspalum urvillei

    carpetgrass

    sedge

    Bermudagrass

    dallisgrass

    Vasey's grass

    Vasey's grass

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    —

    —

    —

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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

    1

    —

    —

    12

    —

    1524

    —

    —

    19.4

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    —

    —

    —

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    Ap—0 to 13 centimeters (0.0 to 5.1 inches); light brownish gray (10YR 6/2), light gray (10YR 7/2), dry; silt loam; 1 percent brown (10YR 5/3) fine faint and 25 percent brown (7.5YR 4/4) distinct mottles; strong medium granular structure; slightly hard, friable; 10.0 fine to coarse roots; 5 percent brown (10YR 5/3) iron-manganese concretions and 5 percent black (10YR 2/1) iron-manganese concretions; fragments; strongly acid, pH 5.3, unspecified; abrupt smooth boundary. Lab sample # 40A10070. mottles appear to be weak concretions.
    A2g—13 to 41 centimeters (5.1 to 16.1 inches); gray (10YR 6/1), light gray (10YR 7/1), dry; silt loam; 3 percent strong brown (7.5YR 5/6) and 10 percent pale brown (10YR 6/3) fine and medium faint and 10 percent yellowish brown (10YR 5/4) distinct mottles; massive, and weak medium prismatic, and weak medium subangular blocky; slightly hard, firm; 10.0 fine roots; yellowish brown (10YR 5/8) iron stains in root channels and/or pores; fragments; very strongly acid, pH 4.8, unspecified; gradual irregular boundary. Lab sample # 40A10071. strong brown mottles appear to be weak concretions.
    B21tg—41 to 79 centimeters (16.1 to 31.1 inches); gray (10YR 6/1), light gray (10YR 7/1), dry; silty clay loam; 10 percent pale brown (10YR 6/3) medium faint and 10 percent yellowish brown (10YR 5/4) medium distinct mottles; moderate fine and medium prismatic, and moderate medium subangular blocky structure; hard, friable; 10.0 fine roots between peds; 15 percent black (10YR 2/1) oxide coats on lower surfaces of peds or rocks and 55 percent gray (10YR 6/1) silt coats on faces of peds; 3 percent brown (10YR 5/3) iron-manganese concretions and 3 percent black (10YR 2/1) iron-manganese concretions; fragments; very strongly acid, pH 4.8, unspecified; gradual wavy boundary. Lab sample # 40A10072. numerous small vertical veins and a few large krotovinas (crayfish burrows) of gray (10YR 6/1) silt or silt loam.; patchy - phpvsfiid 174879; patchy - phpvsfiid 174879
    B22tg—79 to 104 centimeters (31.1 to 40.9 inches); gray (10YR 5/1) and grayish brown (2.5Y 5/2), light gray (10YR 7/1), dry; silty clay loam, silt loam; 10 percent yellowish brown (10YR 5/4) and 10 percent yellowish brown (10YR 5/6) mottles; moderate and strong medium and coarse prismatic, and moderate medium subangular blocky structure; hard, firm; 0.5 fine roots between peds; 10.0 interstitial and tubular pores; light gray (10YR 7/2) silt coats; 3 percent brown (10YR 5/3) iron-manganese concretions and 3 percent black (10YR 2/1) iron-manganese concretions; fragments; very strongly acid, pH 4.8, unspecified; abrupt smooth boundary. Lab sample # 40A10073. common vertical veins and a few krotovinas (crayfish burrows) of light brownish gray (10YR 6/2) silt or silt loam.
    B31—104 to 130 centimeters (40.9 to 51.2 inches); grayish brown (2.5Y 5/2), light brownish gray (2.5Y 6/2), dry; silt loam; 5 percent grayish brown (10YR 5/2) and 5 percent yellowish brown (10YR 5/4) and 5 percent dark grayish brown (10YR 4/2) mottles; moderate fine and medium platy, and weak medium prismatic structure; hard, firm; 10.0 fine pores; 37 percent light gray (10YR 7/2) silt coats on horizontal faces of peds; fragments; slightly acid, pH 6.3, unspecified; abrupt smooth boundary. Lab sample # 40A10074. common vertical veins of gray (5Y 5/1) silt; few large krotovinas of grayish brown (2.5Y 5/2) silt or silt loam.
    B32—130 to 163 centimeters (51.2 to 64.2 inches); yellowish brown (10YR 5/6) and brown (7.5YR 4/4) silt loam; 35 percent grayish brown (2.5Y 5/2) mottles; weak medium and coarse prismatic parts to weak medium platy structure; hard, firm; 10.0 fine pores; 15 percent black (10YR 2/1) oxide coats; 2 percent brown (10YR 5/3) iron-manganese concretions and 2 percent black (10YR 2/1) iron-manganese concretions; fragments; slightly acid, pH 6.3, unspecified. Lab sample # 40A10075. common vertical veins and a few krotovinas (crayfish burrows) of grayish brown (2.5Y 5/2) silt or silt loam.