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ESAS1

Location: Moglonemby

Australian Soil Classification: Eutrophic, Hypernatric, Grey SODOSOL

General Landscape Description: Alluvial plain (prior streams).
Site Description: Grazing Paddock.
Geology: Quaternary alluvial (prior stream) deposits.

ESAS1 landscape
ESAS1 Landscape


Soil Profile Morphology:

Surface Soil

A10-8 cmBrown (7.5YR4/2); fine sandy clay loam; moderate medium blocky structure; firm to very firm consistence dry; pH 5.1:
ESAS1 profile
ESAS1 Profile
A28-12 cmVery pale brown (10YR7/3) (10YR7/1 dry); fine sandy clay loam; strong consistence dry; pH 5.8:
Subsoil
B2112-40 cmGreyish brown (10YR5/2); medium clay; moderate very coarse columnar, parting to moderate coarse prismatic, further parting to strong coarse (20-50 mm) blocky structure; very strong consistence dry; pH 7.2:
B2240-85 cmBrown (10YR5/3); medium clay; pH 7.1:
B2385-110 cmGreyish brown (10YR5/2) with many (40%) yellowish brown (10YR5/6) mottles; medium clay (gravelly) pH 7.8:
B24110-140 cmGreyish brown (10YR5/2) with few (10%) yellowish brown (10YR5/6); medium heavy clay; manganese stains present; pH 6.6.


Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Strongly Acid
Very Low
Non-Sodic
None
Subsoil
(B21 horizon)
Slightly Alkaline
Very Low
Strongly Sodic
Yes 1
Deeper subsoil
(at 85-110 cm)
Slightly Alkaline
Very Low
Strongly Sodic
Yes 1
1 Strong to complete dispersion after remoulding.

ESAS1 graphs
The pH in the surface is strongly acid. The subsoil is slightly alkaline.The salinity rating is very low throughout the profile.The surface is non-sodic.
The subsoil is strongly sodic.
The clay content increases markedly at the surface / subsoil boundary.

Horizon
Horizon Depth
(cm)
pH
(water)
pH
CaCl2
EC
ds/m
Exchangeable Cations
Organic Carbon
g/100g
Ca
Mg
K
Na
meq/100g
A1
0-8
5.1
4.4
0.09
3.1
1.3
0.42
0.35
2.2
A2
8-12
5.8
4.8
0.08
-
-
-
-
B21
12-40
7.2
6.1
0.11
5.2
5.8
0.38
1.8
B22
40-85
7.1
6.0
0.19
2.4
7.5
0.39
2.9
B23
85-110
7.8
6.6
0.12
1.3
6.8
0.29
2.7
B24
110-140
6.6
5.4
0.14
1.1
7.1
0.29
2.9

Horizon
Horizon Depth
(cm)
Available Aluminium
mg/kg
Exchangeable Acidity
meq/100g
Field
Capacity
pF2.5
Wilting Point
pF4.2
Coarse Sand
(0.2-2.0mm)
Fine Sand
(0.02-0.2mm)
Silt
(0.002-0.02mm)
Clay
(<0.002mm)
A1
0-8
63
10
27.2
6.4
18
24
34
17
A2
8-12
11
4.5
19.9
5
22
33
29
14
B21
12-40
28
12.1
8
26
32
31
B22
40-85
29.8
12.9
7
27
37
27
B23
85-110
25.6
11.4
B24
110-140

ESAS1 group
Profile Described By: Mark Imhof (September 2006).

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