IDENTIFIERS

Current Taxon Name (Soil Name): Clarksdale

OSD

Series Extent

User Site ID: S1979IL057001

User Pedon ID: S1979IL057001

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - IL SCL

Lab Pedon # - 79IL057001

NCSS Pedon Lab Data NASIS Record ID - 22211

Print Date: 2/17/2025

LOCATION

State: Illinois

County: IL057—Fulton

Non-MLRA Soil Survey Area: IL057—Fulton County, Illinois

PEDON

Describers Name: DF

Current Taxonomic Class: Fine, smectitic, mesic Udollic Endoaqualfs

Current Taxon Kind: series

Pedon Type: taxadjunct to the series

Pedon Purpose: soil survey inventory

Pedon Record Orgin: PedonPC

Pedon #: 1

Correlated Information:

Soil Name - Clarksdale

PSC - 38 to 88 cm.

Classificaton Date - 10/2/2008

Soil Taxonomic Edition - twelfth edition

Moisture Class - aquic

Moisture Subclass - aeric

Sampled As Information:

Soil Name - Clarksdale

Classificaton Date - 8/23/2007

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: Fine-textured Peoria Loess

Drainage Class: somewhat poorly

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/23/2007 (entry creation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

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 Bt3 Bt4 BC C1 C2	0 23 38 46 68 94 112 137 168	23 38 46 68 94 112 137 168 194	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

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 Bt3 Bt4 BC C1 C2	0 23 38 46 68 94 112 137 168	23 38 46 68 94 112 137 168 194	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —		— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

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 Bt3 Bt4 BC C1 C2	0 23 38 46 68 94 112 137 168	23 38 46 68 94 112 137 168 194	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—38 38—112	—38— —74—

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
3	—	—	—	—		—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 23 centimeters (0.0 to 9.1 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silt loam; moderate fine granular structure; friable; fragments; slightly alkaline, pH 7.5; abrupt smooth boundary. Lab sample # IL26240

E—23 to 38 centimeters (9.1 to 15.0 inches); grayish brown (10YR 5/2), light brownish gray (10YR 6/2), dry; silt loam; weak thick platy parts to moderate very fine angular blocky structure; friable; fragments; neutral, pH 6.8; clear smooth boundary. Lab sample # IL26241

Bt1—38 to 46 centimeters (15.0 to 18.1 inches); variegated 50 percent yellowish brown (10YR 5/6) and 50 percent light olive brown (2.5Y 5/3) silty clay loam; mottles; moderate medium angular blocky structure; friable; fragments; slightly acid, pH 6.2; clear smooth boundary. Lab sample # IL26242

Bt2—46 to 68 centimeters (18.1 to 26.8 inches); light olive brown (2.5Y 5/4) silty clay; moderate medium prismatic parts to moderate medium angular blocky structure; firm; fragments; moderately acid, pH 5.6; clear smooth boundary. Lab sample # IL26243

Bt3—68 to 94 centimeters (26.8 to 37.0 inches); light olive brown (2.5Y 5/4) silty clay loam; moderate medium prismatic parts to moderate medium angular blocky structure; firm; fragments; slightly acid, pH 6.2; clear smooth boundary. Lab sample # IL26244

Bt4—94 to 112 centimeters (37.0 to 44.1 inches); light olive brown (2.5Y 5/4) silty clay loam; moderate medium prismatic parts to moderate medium angular blocky structure; firm; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL26245

BC—112 to 137 centimeters (44.1 to 53.9 inches); variegated 50 percent light olive brown (2.5Y 5/4) and 50 percent light brownish gray (2.5Y 6/2) silt loam; mottles; moderate medium prismatic structure; firm; fragments; slightly alkaline, pH 7.4; clear wavy boundary. Lab sample # IL26246

C1—137 to 168 centimeters (53.9 to 66.1 inches); variegated 34 percent light olive brown (2.5Y 5/4) and 33 percent gray (5Y 6/1) and 33 percent brownish yellow (10YR 6/6) silt loam; mottles; massive; firm; fragments; slightly alkaline, pH 7.5; diffuse wavy boundary. Lab sample # IL26247

C2—168 to 194 centimeters (66.1 to 76.4 inches); variegated 34 percent brownish yellow (10YR 6/6) and 33 percent gray (5Y 6/1) and 33 percent light olive brown (2.5Y 5/4) silt loam; massive; firm; fragments; moderately alkaline, pH 8.0. Lab sample # IL26248