*** Primary Characterization Data ***

Pedon ID: 1979AR01918

( Clark, Arkansas )

Print Date: May 13 2025 6:31AM

Sampled as :
Revised to :

				State of Arkansas
SSL	-	Project	AR201301   University of Arkansas	University of Arkansas
	-	Site ID	1979AR01918   Lat: 33° 50' 30.98" north  Long: 92° 58' 23.02" west	Department of Crop, Soil, and Environmental Sciences
	-	Pedon No.	79CK18	115 Plant Science Building
	-	General Methods 1B1A, 2A1, 2B		Fayetteville, Arkansas 72701

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Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
UAR0008990	A	A	0-10	79CK18	UAR0008990			SIL
UAR0008991	BA	BA	10-25	79CK18	UAR0008991			SIL
UAR0008992	Bt	Bt	25-53	79CK18	UAR0008992			SIL
UAR0008993	Btx1	Btx1	53-76	79CK18	UAR0008993			SIL
UAR0008994	Btx2	Btx2	76-102	79CK18	UAR0008994			SIL
UAR0008995	Btx2	Btx2	102-127	79CK18	UAR0008995			SIL
UAR0008996	B't	B't	127-163	79CK18	UAR0008996			SIL
UAR0008997	B't	B't	163-183	79CK18	UAR0008997			SICL

---

---

PSDA  &  Rock Fragments				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-
					(- - - - - Total - - - - - -)			(- - Clay - - -)		(- - - - Silt - - - - -)		(- - - - - - - - - - - - Sand - - - - - - - - - - - -)					( Rock Fragments   (mm) )
				Lab	Clay	Silt	Sand	Fine	CO3	Fine	Coarse	VF	F	M	C	VC	(- - - - - - - - Weight - - - - - - - -)				>2 mm
				Text-	<	.002	.05	<	<	.002	.02	.05	.10	.25	.5	1	2	5	20	.1-	wt %
	Depth			ure	.002	-.05	-2	.0002	.002	-.02	-.05	-.10	-.25	-.50	-1	-2	-5	-20	-75	75	whole
Layer	(cm)	Horz	Prep		(- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -)												(- - - - - - - % of <75mm - - - - - -)				soil
					hyd1					hyd1		hyd1	hyd1	hyd1	hyd1	hyd1
UAR0008990	0-10	A	S	sil	7.9	77.0	15.1			46.4	30.6	8.3	4.2	1.1	0.7	0.8
UAR0008991	10-25	BA	S	sil	9.7	75.9	14.4			53.1	22.8	8.4	4.1	1.0	0.4	0.5
UAR0008992	25-53	Bt	S	sil	16.0	72.5	11.5			50.5	22.0	7.1	3.0	0.6	0.3	0.5
UAR0008993	53-76	Btx1	S	sil	18.3	70.8	10.9			48.9	21.9	6.8	2.9	0.5	0.3	0.4
UAR0008994	76-102	Btx2	S	sil	16.4	72.5	11.1			49.7	22.8	7.1	3.0	0.6	0.2	0.2
UAR0008995	102-127	Btx2	S	sil	16.6	73.2	10.3			49.4	23.7	6.8	2.6	0.5	0.2	0.2
UAR0008996	127-163	B't	S	sil	18.5	71.0	10.5			49.2	21.8	6.8	3.0	0.5	0.1	0.1
UAR0008997	163-183	B't	S	sicl	31.8	59.1	9.1			41.1	18.0	4.7	2.4	0.7	0.7	0.6

*** Primary Characterization Data ***

Pedon ID: 1979AR01918

( Clark, Arkansas )

Print Date: May 13 2025 6:31AM

Sampled As	:
University of Arkansas Soil Characterization Laboratory			;	Pedon No.  79CK18

---

Carbon  &  Extractions

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

-19-

(- - - - - Total - - - - -)

Est

OC

C/N

(- - - Dith-Cit Ext - - -)

(- - - - - - Ammonium Oxalate Extraction - - - - - -)

(- - - Na Pyro-Phosphate - - -)

Depth

C

N

S

OC

(WB)

Ratio

Fe

Al

Mn

Al+½Fe

ODOE

Fe

Al

Si

Mn

C

Fe

Al

Mn

Layer

(cm)

Horz

Prep

(- - - - - - - - - - % of <2 mm - - - - - - - - - -)

(- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -)

mg kg-1

(- - - - - - % of < 2mm - - - - -)

6A2b

UAR0008990

0-10

A

S

1.31

UAR0008991

10-25

BA

S

0.39

UAR0008992

25-53

Bt

S

0.17

UAR0008993

53-76

Btx1

S

0.20

UAR0008994

76-102

Btx2

S

0.20

UAR0008995

102-127

Btx2

S

0.17

UAR0008996

127-163

B't

S

0.19

UAR0008997

163-183

B't

S

0.15

---

CEC  &  Bases				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(- - - - - - NH4OAC Extractable Bases - - - - -)								CEC8	CEC7	ECEC		(- - - - Base - - - -)
								Sum	Acid-	Extr	KCl	Sum	NH4	Bases	Al	(- Saturation -)
	Depth			Ca	Mg	Na	K	Bases	ity	Al	Mn	Cats	OAC	+Al	Sat	Sum	NH4OAC
Layer	(cm)	Horz	Prep	(- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -)							mg kg-1	(- - - - cmol(+) kg-1 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2e	6O2d	6P2b	6Q2b		6H1a
UAR0008990	0-10	A	S	0.7	0.6	--	0.1	1.4	1.0			2.4				58
UAR0008991	10-25	BA	S	0.1	0.6	--	--	0.7	8.6			9.3				8
UAR0008992	25-53	Bt	S	0.3	0.8	0.1	0.1	1.3	12.0			13.3				10
UAR0008993	53-76	Btx1	S	0.2	0.9	0.1	0.1	1.3	12.0			13.3				10
UAR0008994	76-102	Btx2	S	0.2	0.8	0.1	--	1.1	13.5			14.6				8
UAR0008995	102-127	Btx2	S	0.2	0.5	0.2	0.1	1.0	12.6			13.6				7
UAR0008996	127-163	B't	S	0.2	1.3	1.3	0.1	2.9	14.4			17.3				17
UAR0008997	163-183	B't	S	0.1	1.3	1.3	0.1	2.8	24.2			27.0				10

*** Primary Characterization Data ***

Pedon ID: 1979AR01918

( Clark, Arkansas )

Print Date: May 13 2025 6:31AM

Sampled As	:
University of Arkansas Soil Characterization Laboratory			;	Pedon No.  79CK18

---

pH  &  Carbonates

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

(- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -)

(- - Carbonate - -)

(- - Gypsum - - -)

CaCl2

As CaCO3

As CaSO4*2H2O

Resist

Depth

0.01M

H2O

Sat

<2mm

<20mm

<2mm

<20mm

ohms

Layer

(cm)

Horz

Prep

KCl

1:2

1:1

Paste

Oxid

NaF

(- - - - - - - - - - - - % - - - - - - - - - - -)

cm-1

8C1a

UAR0008990

0-10

A

S

4.5

UAR0008991

10-25

BA

S

4.5

UAR0008992

25-53

Bt

S

4.4

UAR0008993

53-76

Btx1

S

4.4

UAR0008994

76-102

Btx2

S

4.5

UAR0008995

102-127

Btx2

S

4.5

UAR0008996

127-163

B't

S

4.8

UAR0008997

163-183

B't

S

4.8