IDENTIFIERS

  • Current Taxon Name (Soil Name): Larkin
  • OSD
  • Series Extent
  • User Site ID: 77-ALF-051
  • User Pedon ID: 77ID057007
  • Vegetation Plot ID: 77-ALF-051
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - UIdaho
  • Lab Pedon # - 77-ID-2974
  • NCSS Pedon Lab Data NASIS Record ID - 83053
  • 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: 46.8704000
  • Std. Longitude: -117.0057000
  • Datum: WGS84
  • Township: 41N
  • Range: 5W
  • Section: 30
  • PLSS Details: NE corner
  • Location Description: Latah County; 30.5 meters south of Highway 95; 396.5 meters west and 106.8 meters south of the northeast corner; Larkin series; graduate student site
  • Country: US—United States
  • State: Idaho
  • County: ID057—Latah
  • MLRA: 43A—Northern Rocky Mountains
  • Regional Office: NW—Northwest
  • MLRA Soil Survey Area: NW-MOS—Moscow, Idaho
  • Non-MLRA Soil Survey Area: ID057—Latah County, Idaho

    • PEDON

  • Describers Name: Neil Peterson and Mark Johnson
  • Pedon Purpose: research site
  • Pedon Record Orgin: Pedon PC 6.1B
  • Sampled As Information:
  • Soil Name - Larkin
  • Classificaton Date - 4/28/1977
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: deep loess; could be some loess mixed with a small amount of volcanic ash in upper part
  • Slope Position: upper third
  • Slope Shape Across: convex
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/28/1977 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Oi

    Oe

    A1

    A2

    AB

    Bt1

    Bt2

    Btc1

    Btc2

    0

    3

    4

    14

    29

    42

    57

    92

    127

    3

    4

    14

    29

    42

    57

    92

    127

    159

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Oi

    Oe

    A1

    A2

    AB

    Bt1

    Bt2

    Btc1

    Btc2

    0

    3

    4

    14

    29

    42

    57

    92

    127

    3

    4

    14

    29

    42

    57

    92

    127

    159

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Oi

    Oe

    A1

    A2

    AB

    Bt1

    Bt2

    Btc1

    Btc2

    0

    3

    4

    14

    29

    42

    57

    92

    127

    3

    4

    14

    29

    42

    57

    92

    127

    159

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACMI2

    AMAL2

    CAGE2

    CARU

    CESA

    ELGL

    FRAGA

    LODI

    MAAQ2

    PEGA3

    PHMA5

    PIPO

    POPR

    PRVI

    PSSP6

    RONU

    SYAL

    Achillea millefolium

    Amelanchier alnifolia

    Carex geyeri

    Calamagrostis rubescens

    Ceanothus sanguineus

    Elymus glaucus

    Fragaria

    Lomatium dissectum

    Mahonia aquifolium

    Perideridia gairdneri

    Physocarpus malvaceus

    Pinus ponderosa

    Poa pratensis

    Prunus virginiana

    Pseudoroegneria spicata

    Rosa nutkana

    Symphoricarpos albus

    common yarrow

    Saskatoon serviceberry

    Geyer's sedge

    pinegrass

    redstem ceanothus

    blue wildrye

    strawberry

    fernleaf biscuitroot

    hollyleaved barberry

    Gardner's yampah

    mallow ninebark

    ponderosa pine

    Kentucky bluegrass

    chokecherry

    bluebunch wheatgrass

    Nootka rose

    common snowberry

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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

    22

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    793

    921

    270

    575

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    100

    7.8

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    8.9

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    Oi—0 to 3 centimeters (0.0 to 1.2 inches); fragments. Lab sample # ID29741
    Oe—3 to 4 centimeters (1.2 to 1.6 inches); fragments. Lab sample # ID29742
    A1—4 to 14 centimeters (1.6 to 5.5 inches); very dark brown (10YR 2/2), dark grayish brown (10YR 4/2), dry; silt loam; 13 percent sand; 68 percent silt; 18 percent clay; weak fine subangular blocky parts to weak fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; many (6.0) very fine roots throughout and many (6.0) medium roots throughout and many (6.0) fine roots throughout and few (0.1) coarse roots throughout; many (6.0) very fine tubular and many (6.0) fine tubular pores; fragments; clear wavy boundary. Lab sample # ID29743
    A2—14 to 29 centimeters (5.5 to 11.4 inches); very dark grayish brown (10YR 3/2), brown (10YR 5/3), dry; silt loam; 13 percent sand; 66 percent silt; 21 percent clay; weak fine subangular blocky parts to moderate fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; many (6.0) very fine roots throughout and many (6.0) medium roots throughout and many (6.0) fine roots throughout and common (4.0) coarse roots throughout; many (6.0) very fine tubular and few (0.1) medium tubular and many (6.0) fine tubular pores; fragments; clear wavy boundary. Lab sample # ID29744
    AB—29 to 42 centimeters (11.4 to 16.5 inches); dark brown (10YR 3/3), brown (10YR 5/3), dry; silt loam; 13 percent sand; 64 percent silt; 24 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many (6.0) very fine roots throughout and many (6.0) medium roots throughout and many (6.0) fine roots throughout and common (4.0) coarse roots throughout; many (6.0) very fine tubular and common (4.0) medium tubular and many (6.0) fine tubular pores; fragments; clear wavy boundary. Lab sample # ID29745
    Bt1—42 to 57 centimeters (16.5 to 22.4 inches); dark yellowish brown (10YR 4/4), yellowish brown (10YR 5/4), dry; silt loam; 11 percent sand; 62 percent silt; 27 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; hard, firm, slightly sticky, slightly plastic; common (4.0) very fine roots throughout and many (6.0) medium roots throughout and many (6.0) fine roots throughout and few (6.0) coarse roots throughout; many (6.0) very fine tubular and common (4.0) medium tubular and many (6.0) fine tubular pores; 10 percent faint brown (7.5YR 5/4), moist, clay films on all faces of peds; fragments; clear smooth boundary. Lab sample # ID29746
    Bt2—57 to 92 centimeters (22.4 to 36.2 inches); dark yellowish brown (10YR 4/4), yellowish brown (10YR 5/4), dry; silt loam; 13 percent sand; 60 percent silt; 27 percent clay; moderate medium prismatic parts to strong fine angular blocky structure; very hard, very firm, slightly sticky, slightly plastic; many (6.0) very fine roots throughout and common (4.0) medium roots throughout and common (4.0) fine roots throughout and few (0.1) coarse roots throughout; many (6.0) very fine tubular and common (4.0) medium tubular and many (6.0) fine tubular pores; 25 percent faint brown (7.5YR 5/4), moist, clay films on all faces of peds; fragments; clear wavy boundary. Lab sample # ID29747
    Btc1—92 to 127 centimeters (36.2 to 50.0 inches); dark yellowish brown (10YR 4/4), yellowish brown (10YR 5/4), dry; silt loam; 12 percent sand; 62 percent silt; 26 percent clay; moderate medium prismatic, and moderate coarse prismatic structure; very hard, very firm, moderately sticky, moderately plastic; many (6.0) very fine roots throughout and common (4.0) medium roots throughout and common (4.0) fine roots throughout and common (4.0) coarse roots throughout; many (6.0) very fine tubular and many (6.0) medium tubular and many (6.0) fine tubular pores; 55 percent distinct reddish brown (5YR 5/4), moist, clay films on all faces of peds and 55 percent distinct reddish brown (5YR 5/4), moist, clay films on surfaces along pores; fragments; gradual wavy boundary. Lab sample # ID29748
    Btc2—127 to 159 centimeters (50.0 to 62.6 inches); dark yellowish brown (10YR 4/6), light olive (10Y 5/4), dry; silt loam; 13 percent sand; 65 percent silt; 21 percent clay; weak coarse prismatic parts to moderate medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; many (6.0) very fine roots throughout and common (4.0) medium roots throughout and common (4.0) fine roots throughout and common (4.0) coarse roots throughout; many (6.0) very fine tubular and many (6.0) medium tubular and many (6.0) fine tubular pores; 55 percent prominent reddish brown (5YR 5/4), moist, clay films on all faces of peds and 55 percent distinct reddish brown (5YR 5/4), moist, clay films on all faces of peds and 55 percent prominent reddish brown (5YR 5/4), moist, clay films on surfaces along pores and 55 percent distinct reddish brown (5YR 5/4), moist, clay films on surfaces along pores; fragments. Lab sample # ID29749