IDENTIFIERS

Current Taxon Name (Soil Name): Clarksdale

OSD

Series Extent

User Site ID: S1982IL131082

User Pedon ID: S1982IL131082

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - IL SCL

Lab Pedon # - 82IL131082

NCSS Pedon Lab Data NASIS Record ID - 21475

Print Date: 5/20/2024

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: 41.1701166

Std. Longitude: -90.5140261

Datum: WGS84

Township: 14N

Range: 1W

Section: 29

PLSS Details: about 200 feet west and 1,420 feet north of the SE section corner; MLRA 108B

Location Description: Located about 1.25 miles north of Pope Creek

Map Unit: 257A—Clarksdale silt loam, 0 to 2 percent slopes

Country: US—United States

State: Illinois

County: IL131—Mercer

MLRA: 108—Illinois and Iowa Deep Loess and Drift

Regional Office: NC—North Central

MLRA Soil Survey Area: NC-SPI—Springfield, Illinois

Non-MLRA Soil Survey Area: IL131—Mercer County, Illinois

7.5 Minute USGS Quad: 41090-B5—Viola, Illinois

PEDON

Describers Name: Richard J. Schantz

Current Taxonomic Class: Fine, smectitic, mesic Aquollic Hapludalfs

Current Taxon Kind: taxadjunct

Pedon Type: TUD pedon

Pedon Purpose: soil survey inventory

Pedon Record Orgin: PedonPC

Pedon #: 82

Correlated Information:

Soil Name - Clarksdale

PSC - 30 to 80 cm.

Classificaton Date - 8/4/2015

Soil Taxonomic Edition - twelfth edition

Moisture Class - udic

Moisture Subclass - aquic

Sampled As Information:

Soil Name - Clarksdale

Classificaton Date - 3/28/2011

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: Fine-textured Peoria Loess

Landscape: till plain

Landform: ground moraine

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Class: somewhat poorly

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 3/28/2011 (entry creation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Site Obs. Cover Kind 2 - row crop

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			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap E Bt1 Bt2 Btg1 Btg2 BCg Cg	0 20 30 43 61 86 109 140	20 30 43 61 86 109 140 152	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —

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
Ap E Bt1 Bt2 Btg1 Btg2 BCg Cg	0 20 30 43 61 86 109 140	20 30 43 61 86 109 140 152	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —		— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —

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	%
Ap E Bt1 Bt2 Btg1 Btg2 BCg Cg	0 20 30 43 61 86 109 140	20 30 43 61 86 109 140 152	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—30 30—109	—30— —79—

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	—	—	—	—		1025	—	190	13	—	—	—	—	—	—	—	—	—	—

Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark gray (10YR 3/1), dark gray (10YR 4/1), dry; silt loam; moderate fine granular structure; friable; fragments; slightly alkaline, pH 7.4; abrupt smooth boundary.

E—20 to 30 centimeters (7.9 to 11.8 inches); dark grayish brown (10YR 4/2) silt loam; moderate fine granular structure; friable; fragments; slightly acid, pH 6.5; clear smooth boundary.

Bt1—30 to 43 centimeters (11.8 to 16.9 inches); brown (10YR 5/3) silty clay loam; moderate fine subangular blocky structure; friable; 10 percent distinct dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; fragments; moderately acid, pH 6.0; clear smooth boundary.

Bt2—43 to 61 centimeters (16.9 to 24.0 inches); variegated brown (10YR 5/3) and grayish brown (10YR 5/2) silty clay loam; moderate medium subangular blocky structure; firm; 51 percent distinct dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent fine distinct irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; strongly acid, pH 5.5; gradual smooth boundary. Lab sample # IL29004

Btg1—61 to 86 centimeters (24.0 to 33.9 inches); grayish brown (2.5Y 5/2) silty clay loam; moderate medium subangular blocky structure; firm; 51 percent distinct dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 10 percent fine prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; moderately acid, pH 6.0; gradual smooth boundary. Lab sample # IL29006, IL29005

Btg2—86 to 109 centimeters (33.9 to 42.9 inches); light brownish gray (2.5Y 6/2) silty clay loam; weak medium subangular blocky structure; firm; 10 percent distinct dark grayish brown (10YR 4/2), moist, clay films on surfaces along root channels and 10 percent distinct grayish brown (2.5Y 5/2), moist, clay films on all faces of peds; 10 percent prominent irregular black (5YR 2.5/1), moist, manganese masses and 10 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; neutral, pH 7.2; gradual smooth boundary. Lab sample # IL29007

BCg—109 to 140 centimeters (42.9 to 55.1 inches); light olive gray (5Y 6/2) silt loam; weak medium subangular blocky structure; friable; 10 percent distinct dark grayish brown (10YR 4/2), moist, clay films on surfaces along root channels; 10 percent prominent irregular black (5YR 2.5/1), moist, manganese masses and 10 percent medium prominent irregular yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; neutral, pH 7.3; gradual smooth boundary. The pH's of the Btg2 & BCg horizon ate too alkaline; continuous - phpvsfiid 1414343; continuous - phpvsfiid 1414343

Cg—140 to 152 centimeters (55.1 to 59.8 inches); light olive gray (5Y 6/2) silt loam; massive; friable; 10 percent prominent irregular black (5YR 2.5/1), moist, manganese masses; fragments; slightly alkaline, pH 7.4.