IDENTIFIERS

Current Taxon Name (Soil Name): Kirkland

OSD

Series Extent

User Site ID: S1993OK109003

User Pedon ID: S1993OK109003

Vegetation Plot ID: S1993OK109003

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 94P0090

NCSS Pedon Lab Data NASIS Record ID - 66278

Print Date: 4/27/2025

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: 35.4222221

Std. Longitude: -97.6050034

Datum: WGS84

Township: 11N

Range: 4W

Section: 15

PLSS Details: About 1250 feet west and 480 north of the southeast corner

Map Unit: KrdA—Kirkland silt loam, 0 to 1 percent slopes

Country: US—United States

State: Oklahoma

County: OK109—Oklahoma

MLRA: 80A—Central Rolling Red Prairies

Regional Office: SC—South Central

MLRA Soil Survey Area: SC-STW—Stillwater, Oklahoma

7.5 Minute USGS Quad: 35097-C6—Oklahoma City SW, Oklahoma

PEDON

Describers Name: Bob G. Bourlier

Current Taxonomic Class: Fine, mixed, superactive, thermic Udertic Paleustolls

Current Taxon Kind: series

Pedon Type: classifies to current taxon name, full description

Pedon Purpose: full pedon description

Pedon Record Orgin: Oklahoma Soil Staff

Correlated Information:

Soil Name - Kirkland

PSC - 25 to 75 cm.

Classificaton Date - 5/20/2016

Classifier - Jerry Weinheimer

Soil Taxonomic Edition - twelfth edition

Moisture Class - ustic

Moisture Subclass - udic

Sampled As Information:

Soil Name - Kirkland

Taxonomic Class - Fine, mixed, superactive, thermic Udertic Paleustolls

PSC - 25 to 76 cm.

Classificaton Date - 6/2/1993

Soil Taxonomic Edition - eighth edition

Moisture Class - ustic

Moisture SUBClass - udic

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 1

QA Status: level 1

SITE

Parent Material: clayey alluvium

Landscape: upland

Landform: plain on paleoterrace

Geomorphic Component Hills: interfluve

Hill Slope Profile: summit

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: low

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 6/2/1993 (actual site observation date)

Air Photo ID: 24-NW

Surface Water Kind: none observed

Plant Association Name: R080AY010OK Claypan Prairie

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

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
AMCA6 ANGE BOCU BOGR2 BUDA DESMA PAVI2 SCSC SOLID SONU2 SYOR	Amorpha canescens Andropogon gerardii Bouteloua curtipendula Bouteloua gracilis Buchloe dactyloides Desmanthus Panicum virgatum Schizachyrium scoparium Solidago Sorghastrum nutans Symphoricarpos orbiculatus	leadplant big bluestem sideoats grama blue grama buffalograss bundleflower switchgrass little bluestem goldenrod Indiangrass coralberry	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon argillic horizon secondary carbonates	0—56 25—274 94—208	—56— —249— —114—

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	457	396.2	385	—	0	864	—	—	15.6	26.7	3.9	16.7	27.8	5	—	—	72357	National Severe Storms Laboratory, Norman, OK	Official U. S.

Ap—0 to 23 centimeters (0.0 to 9.1 inches); grayish brown (10YR 5/2) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silt loam; 21 percent sand; 64 percent silt; 16 percent clay; weak fine platy parts to moderate fine granular structure; slightly hard, friable, weak, noncoherent, slightly sticky, slightly plastic; medium toughness; moderate permeability; 7.0 very fine roots throughout and 1.0 fine roots throughout; 1.0 very fine low-continuity vesicular pores; fragments; percent of Organic Carbon Lab estimate; noneffervescent, by hcl, 1n; moderately acid, pH 5.6, hellige-truog; abrupt smooth boundary. Lab sample # 94P680S; moist when described;

A—23 to 25 centimeters (9.1 to 9.8 inches); brown (10YR 5/3) crushed and dark brown (10YR 3/3) crushed silt loam; 21 percent sand; 64 percent silt; 16 percent clay; moderate fine granular structure; hard, friable, noncoherent, slightly sticky, slightly plastic; moderate permeability; 7.0 very fine roots throughout; 1.0 very fine low-continuity vesicular pores; fragments; percent of Organic Carbon Lab estimate; noneffervescent, by hcl, 1n; moderately acid, pH 5.8, hellige-truog; abrupt smooth boundary.; moist when described;

Bt1—25 to 56 centimeters (9.8 to 22.0 inches); dark grayish brown (10YR 4/2) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silty clay; 11 percent sand; 50 percent silt; 39 percent clay; weak medium prismatic parts to moderate medium angular blocky structure; extremely hard, extremely firm*, noncoherent, very sticky, very plastic; medium toughness; very slow permeability; 6.0 very fine roots throughout and 1.0 fine roots throughout; 6.0 very fine moderate-continuity tubular pores; 5 percent distinct dark grayish brown (10YR 4/2), moist, clay films on faces of peds; fragments; percent of Organic Carbon Lab estimate; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; gradual smooth boundary. Lab sample # 94P681S; moist when described;. continuous - phpvsfiid 93706; continuous - phpvsfiid 93706

Bt2—56 to 94 centimeters (22.0 to 37.0 inches); grayish brown (10YR 5/2) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silty clay; 12 percent sand; 53 percent silt; 35 percent clay; weak coarse prismatic parts to weak medium angular blocky structure; extremely hard, extremely firm*, noncoherent, very sticky, very plastic; medium toughness; very slow permeability; 4.0 very fine roots throughout; 6.0 very fine low-continuity tubular pores; 5 percent distinct dark grayish brown (10YR 4/2), moist, clay films on faces of peds; 1 percent fine spherical weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; fragments; percent of Organic Carbon Lab estimate; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 94P682S; moist when described;. continuous - phpvsfiid 93710; continuous - phpvsfiid 93710

Btk1—94 to 135 centimeters (37.0 to 53.1 inches); grayish brown (10YR 5/2) crushed, dark grayish brown (10YR 4/2) crushed, moist; silty clay; 18 percent sand; 49 percent silt; 33 percent clay; 25 percent strong brown (7.5YR 5/6) medium distinct irregular mottles; weak coarse prismatic parts to weak coarse angular blocky structure; extremely hard, extremely firm*, noncoherent, very sticky, very plastic; medium toughness; very slow permeability; 3.0 very fine roots throughout; 3.0 very fine moderate-continuity tubular pores; 5 percent distinct dark grayish brown (10YR 4/2), moist, clay films on faces of peds; 1 percent fine spherical weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 1 percent fine threadlike noncoherent cemented very pale brown (10YR 8/2) carbonate threads throughout and 1 percent medium and coarse irregular moderately coherent cemented very pale brown (10YR 8/2) carbonate concretions throughout; , 1 percent by weight nonflat rounded indurated 2-10-75 millimeter quartzite fragments observed by weighed method; percent of Organic Carbon Lab estimate; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary. Lab sample # 94P683S; moist when described;. continuous - phpvsfiid 93711; continuous - phpvsfiid 93711

Btk2—135 to 208 centimeters (53.1 to 81.9 inches); strong brown (7.5YR 5/6) crushed, strong brown (7.5YR 4/6) crushed, moist; clay loam; 22 percent sand; 47 percent silt; 31 percent clay; 10 percent grayish brown (10YR 5/2) medium distinct irregular mottles; weak coarse prismatic parts to weak coarse subangular blocky structure; very hard, very firm, noncoherent, very sticky, slightly plastic; medium toughness; slow permeability; 1.0 very fine roots throughout; 3.0 very fine low-continuity tubular pores; 2 percent distinct dark grayish brown (10YR 4/2), moist, clay films on horizontal faces of peds; 3 percent fine spherical weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 2 percent fine threadlike noncoherent cemented white (10YR 8/1) carbonate threads throughout; , 1 percent by weight nonflat rounded indurated 2-10-75 millimeter quartzite fragments observed by weighed method; percent of Organic Carbon Lab estimate; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 94P684S; moist when described;. patchy - phpvsfiid 93714; patchy - phpvsfiid 93714

B't—208 to 274 centimeters (81.9 to 107.9 inches); yellowish red (5YR 5/6) crushed, yellowish red (5YR 4/6) crushed, moist; clay loam; 35 percent sand; 36 percent silt; 29 percent clay; 1 percent dark grayish brown (10YR 4/2) fine distinct irregular mottles; weak coarse subangular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; medium toughness; moderately slow permeability; 0.0 roots; 1.0 very fine low-continuity tubular pores; 2 percent distinct dark grayish brown (10YR 4/2), moist, clay films on vertical faces of peds; fragments; percent of Organic Carbon Lab estimate; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog. Lab sample # 94P685S; moist when described;. patchy - phpvsfiid 93715; patchy - phpvsfiid 93715