The Inog series are member of the fine, mixed, mesic family of Typic Udorthents [Haplic Regosols (Humic Dystric Siltic Transportic) classified by WRB]. These soils have dark gray silty clay ^Cp horizons, yellowish brown silty clay ^C1 horizons, very dark gray silty clay 2^C2 horizons. They are developed on river plains derived from dredged soils.

Typifying Pedon : Inog silty clay-rice (Colors are for moist soil).

  Slope: 0-2%

  Elevation: 2 m above m.s.l.

  Soil moisture regime: Udic

  Soil temperature regime: Mesic

  Parent material: Disturbed original soils (about 50cm) over dredged soils

  Diagnostic features: No diagnostic features

  Described by: Sonn, Y. K., C. W. Park, and Y. S. Choi

Morphological properties of typifying pedon.

^Cp – 0 to 15 cm. Dark gray (10YR 4/1) silty clay; few extremely coarse faint clear dark gray (N 4/) and few fine to very coarse faint clear dark yellowish brown (10YR 4/4) mottles; structureless, massive; moderately sticky and very plastic; many very fine to fine rice roots; common very fine to fine pores; diffuse smooth boundary.

^C1 – 15 to 55 cm. Yellowish brown (10YR 5/8) silty clay; many extremely coarse prominent diffuse very dark gray (N 3/) mottles; structureless; very sticky and very plastic; common very fine rice roots; few very fine pores; diffuse irregular boundary.

2^C2 - 55+ cm. Very dark gray (N 3/ ) silty clay; common coarse to very coarse prominent diffuse yellowish brown (10YR 5/8) mottles; structureless; very sticky and very plastic; common very fine rice roots; few very fine pores.

  The typifying pedon has no diagnostic horizons. It can be classified as Entisols. In suborder level has no characteristics, and can be classified Orthents. It has an udic soil moisture regime, and can be classified as Udorthents. Also it meets the requirement of Typic Udorthents.

  The typifying pedon has fine particle-size class and mesic soil temperature class. Therefore it can be classified as fine, mixed, mesic family of Typic Udorthents.

Type Location: Ogjeong Ri, Donggang Myeon, Naju City, Jeollanam Do (126° 31' 38', 34° 54' 39'')

Range in Characteristics: Depth to bedrock is more than 2 meters. ^Cp horizons are dark gray silty clay. The ^C1 horizons are yellowish brown silty clay with 0 to 15% gravels or cobbles. The 2^C2 horizons are very dark gray silty clay.

Competing Series and Their Differentiae: The Inchang soils are associated.

Setting: The Inog soils occur in river plains. Slopes are dominantly 0 to 2 percent.

Principal Associated Soils: These are the Ingog, Indong, Inga, and Ingwan series. The Ingog soils have fine loamy over sandy texture. The Indong soils have fine loamy over sandy texture. The Inga soils have coarse loamy over sandy skeletal texture. The Ingwan soils have coarse loamy over sandy texture.

Drainage and Permeability: Somewhat poorly drained. Permeability is slow and runoff is moderate.

Use and Vegetation: These soils are usually planted to rice.

Distribution and Extent: The Inog soils are of small extent and are distributed in the river plain parts.

Series Established: Naju City, Jeollanam Do, 2013

Laboratory data sheets of typifing pedon.

Depth (cm)	Horizon	( --- Total ---)			(-- Clay --)		(-- Silt --)		(------- Sand -------)
		Clay	Silt	Sand	Fine	Coarse	Fine	Coarse	VF	F	M	C	VC
		LT	.002	.05	LT	LT	.002	.02	.05	.10	.25	.5	1
		.002	- .05	- 2	.0002	.002	- .02	- .05	- .10	- .25	- .50	- 1	- 2
		- - - - - - - - - - - Pct of ˂ 2mm (3A1) - - - - - - - - - - -
0-15	^Ap	40.7	52.0	7.3					1.1	1.8	1.5	1.4	1.5
15-55	^C1	42.4	51.9	5.7					1.1	1.6	1.1	1.3	0.6
55+	2^C2	46.9	51.0	2.1					0.5	0.8	0.5	0.3	0.0

Depth (cm)

Coarse Fractions(mm)

˃2mm

Orgn

Total

Extr

Total

(-- Dith -Cit --)

Weight

Wt

C

N

P

S

Extractable

2-5

5-20

20-75

.1-75

Pct of

Fe

Al

Mn

Whole

6A1c

6B3a

6S3

6R3a

6C2b

6G7a

6D2a

Pct of ˂ 75mm (3B1)

Soil

Pct ˂ 2mm

g/kg

Pct of ˂ 2mm

0-15

1.06

15-55

1.11

55+

1.60

Depth (cm)

Ratio/Clay

Atterberg

( Bulk Density )

COLE

(- Water Content -)

WRD

CEC

1500

Limits

Field

33

Oven

Whole

Field

10

33

1500

Whole

kPa

LL

PI

Moist

kPa

Dry

Soil

Moist

kPa

kPa

kPa

Soil

8D1

8D1

4P1

4P

4A3a

4A1d

4A1h

4D1

4B4

4B1c

4B1c

4B2a

4C1

Pct ˂0.4mm

- - g/cc - -

cm/cm

-- Pct of ˂2mm --

cm/cm

0-15

1.30

15-55

1.25

55+

1.16

Depth (cm)	( NH4OAc Extractable Bases )					Acid-	Extr	(----- CEC -----)			Al
	Ca	Mg	K	Na	Sum	ity	Al	Sum	NH4-	Bases	Sat
	5B5a	5B5a	5B5a	5B5a	Bases			Cats	OAc	+ Al
	6N2e	6O2d	6Q2b	6P2b		6H5a	6G9a	5A3a	5A8b	5A3b	5G1
	- - - - - - - - - - - - meq / 100g - - - - - - - - - - - -										Pct
0-15	3.1	5.1	0.8	1.2	10.2	17.7	0.0	27.9	21.9	10.2	0.00
15-55	3.7	5.5	0.5	1.3	9.6	18.4	0.0	28.1	22.0	9.6	0.02
55+	3.3	6.4	0.5	0.9	10.2	17.0	0.0	27.2	25.3	10.2	0.00

Depth (cm)

(Base Sat)

CO3 as

Res

Cond

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

Acid Oxalate Extraction

Sum

NH4-

CaCO3

NaF

KCl

CaCl2

H2O

Opt

Al

Fe

Si

OAc

˂2mm

.01M

Den

5C3

5C1

6E1g

8E1

8I

8C1d

8C1f

8C1f

8J

6G12

6C9a

6V2

---- Pct ----

ohms/cm

dS/m

1: 1

1: 2

1: 1

- Pct of ˂2mm -

0-14

36.6

46.5

2.5

3.6

3.7

14-67

34.3

43.8

3.5

3.5

3.6

67+

37.5

40.4

2.5

3.5

3.5