IDENTIFIERS

  • Current Taxon Name (Soil Name): Konocti
  • OSD
  • Series Extent
  • User Site ID: S1991CA055002
  • User Pedon ID: 91CA055002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0765
  • NCSS Pedon Lab Data NASIS Record ID - 63804
  • 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: 38.2527771
  • Std. Longitude: -122.3719406
  • Datum: WGS84
  • Location Description: Sterling vineyards - ridge shoulder hillslope. 6750' W of the intersection of Highway 12 and Duhig Road, T.5
  • State: California
  • County: CA055—Napa
  • MLRA: 14—Central California Coastal Valleys

    • PEDON

  • Describers Name: Dave Smith and John Kimble.
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, thermic Ultic Haploxeralfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Konocti
  • PSC - 23 to 43 cm.
  • Classificaton Date - 7/11/2007
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Undesignated
  • Classificaton Date - 6/1/1991
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Geomorphic Component Hills: head slope
  • Hill Slope Profile: toeslope
  • Slope Position: middle third
  • Slope Shape Down: convex
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1991 (actual site observation date)
  • 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: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    0—23

    23—145

    —-

    —-
    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

    4

    —

    —

    69

    —

    90

    76

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap1—0 to 10 centimeters (0.0 to 3.9 inches); 5 percent dark gray (N 4/0) and 95 percent grayish brown (2.5Y 5/2), 95 percent very dark grayish brown (2.5Y 3/2) and black (N 2/0), moist; gravelly loam; moderate coarse subangular blocky, and moderate medium granular structure; hard, friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots and 5.5 medium roots; 30 percent by volume 2-39-75 millimeter sandstone, unspecified fragments; clear smooth boundary. Lab sample # 91P04412. many very fine and fine roots; many medium roots
    Ap2—10 to 23 centimeters (3.9 to 9.1 inches); light olive brown (2.5Y 5/3), very dark grayish brown (10YR 3/2), moist; gravelly clay loam; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots and 5.5 medium roots; 30 percent by volume 2-39-75 millimeter sandstone, unspecified fragments; clear boundary. Lab sample # 91P04413. many very fine and fine roots; many medium roots
    Bt1—23 to 51 centimeters (9.1 to 20.1 inches); 20 percent yellowish brown (10YR 5/6) and 40 percent yellowish brown (10YR 5/4) and 40 percent light yellowish brown (10YR 6/4), 5 percent light yellowish brown (10YR 6/4) and 15 percent dark yellowish brown (10YR 4/6) and 80 percent dark yellowish brown (10YR 3/4), moist; very gravelly clay loam; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, moderately plastic; 5.5 very fine and fine roots; 37 percent distinct dark yellowish brown (10YR 4/6) clay films on faces of peds and 55 percent prominent dark yellowish brown (10YR 4/6) clay films between sand grains; 40 percent by volume 2-39-75 millimeter sandstone, unspecified fragments; gradual smooth boundary. Lab sample # 91P04414. many clay films surface features between sand grains; common clay films surface features on faces of peds; many very fine and fine roots
    Bt2—51 to 74 centimeters (20.1 to 29.1 inches); 20 percent yellowish brown (10YR 5/4) and 20 percent yellowish brown (10YR 5/6) and 60 percent light yellowish brown (10YR 6/4), 5 percent light yellowish brown (10YR 6/4) and 15 percent dark yellowish brown (10YR 4/6) and 80 percent dark yellowish brown (10YR 4/4), moist; very gravelly sandy loam; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine and fine roots; 37 percent clay films on faces of peds and 55 percent clay films between sand grains; 50 percent by volume 2-39-75 millimeter sandstone, unspecified fragments; gradual smooth boundary. Lab sample # 91P04415. many clay films surface features between sand grains; common clay films surface features on faces of peds; many very fine and fine roots
    Bt3—74 to 102 centimeters (29.1 to 40.2 inches); 50 percent yellowish brown (10YR 5/6) and 50 percent light yellowish brown (2.5Y 6/4), 50 percent dark yellowish brown (10YR 4/6) and 50 percent olive brown (2.5Y 4/4), moist; very gravelly sandy loam; massive; slightly hard, friable, nonsticky, nonplastic; 2.5 very fine and fine roots; 55 percent clay films between sand grains; 50 percent by volume 2-39-75 millimeter sandstone, unspecified fragments; gradual smooth boundary. Lab sample # 91P04416. many clay films surface features between sand grains; common very fine and fine roots
    Bt4—102 to 119 centimeters (40.2 to 46.9 inches); 10 percent pale yellow (2.5Y 7/4) and 40 percent brownish yellow (10YR 6/6) and 50 percent light yellowish brown (2.5Y 6/4), 50 percent olive brown (2.5Y 4/4) and 50 percent light olive brown (2.5Y 5/6), moist; very gravelly sandy clay loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 55 percent clay films between sand grains; 11 percent fine and medium carbonate masses; 50 percent by volume 2-39-75 millimeter sandstone, unspecified fragments; gradual smooth boundary. Lab sample # 91P04417. whitish color may be carbonate; common fine and medium soft masses of carbonate concentrations; many clay films surface features between sand grains
    Bt5—119 to 145 centimeters (46.9 to 57.1 inches); 10 percent pale yellow (2.5Y 7/4) and 40 percent brownish yellow (10YR 6/6) and 50 percent light yellowish brown (2.5Y 6/4), 50 percent olive brown (2.5Y 4/4) and 50 percent light olive brown (2.5Y 5/6), moist; very gravelly sandy loam; massive; soft, very friable, nonsticky, nonplastic; 55 percent clay films between sand grains; 11 percent fine and medium carbonate masses; fragments. Lab sample # 91P04418. whitish color may be carbonate; common fine and medium soft masses of carbonate concentrations; many clay films surface features between sand grains