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SW30

Location: Yeodene

Australian Soil Classification: Bleached-Ferric, Mesotrophic, Brown CHROMOSOL

Map Unit: Map Unit 9 (Maher and Martin, 1987).

General Landscape Description: Gently Undulating Plain.
Site Description: Grazing paddock (dairy).
Geology: Tertiary - Moorabool Viaduct Formation.

SW30 Landscape
SW30 Landscape


Soil Profile Morphology:

Surface Soil

A10-20 cmBrown (7.5YR3/2); fine sandy clay loam; weak coarse blocky structure; weak to firm consistence moist; pH 5.2; clear and wavy change to:
SW30 Profile
SW30 Profile
A2120-30 cmPale brown (10YR6/3), conspicuously bleached (10YR8/2d); rusty root channel mottling; light fine sandy clay loam; very weak consistence moist; pH 5.7; clear change to:
A2230-40 cmPale brown (10YR6/3), conspicuously bleached (10YR8/2d); light fine sandy clay loam; contains many (40%) ferruginous nodules (2-20 mm in size); pH 6.3; abrupt change to:
Subsoil
B2140-70 cmDark yellowish brown (10YR4/4) with dark red (2.5YR4/6) and brownish yellow (10YR6/8) mottles; medium clay; moderate coarse blocky, parting to strong medium blocky, parting to fine blocky structure; strong consistence moist; pH 6.3; gradual change to:
B2270-90 cmBrown (10YR5/3) with many dark red (2.5YR4/8) and brownish yellow (10YR6/8) mottles; medium clay (silty); moderate coarse blocky, parting to strong medium, parting to fine blocky structure; strong consistence moist; pH 6.4; gradual change to:
B2390+ cmBrown (10YR5/3) with red (2.5YR4/8), brownish yellow (10YR6/8) and light brownish grey (10YR6/2) mottles; medium clay; strong medium polyhedral structure; strong consistence moist; contains ferruginised sandstone fragments; pH 6.4.

Key Profile Features:

Soil Profile Characteristics:



pH



Salinity Rating
Surface
(A1 horizon)
Strongly Acid
Very Low
Non-Sodic
None
Subsoil
(B21 horizon)
Slightly Acid
Very Low
Non-Sodic
None
Deeper Subsoil
(at 90+ cm)
Slightly Acid
Very Low
Non-Sodic
None

SW30 pH
The surface horizon is strongly acid. The subsoil is slightly acid. 		SW30 Salinity
The whole profile has a very low salinity rating.		SW30 Clay
The clay content increases abruptly at 40 cm depth.

Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
(dS/m)
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A1
0-20
5.2
4.6
0.1
4.3
0.3
0.2
0.05
A21
20-30
5.7
4.8
<0.05
1.4
0.3
0.05
0.05
A22
30-40
6.3
5.2
<0.05
1.4
0.7
0.05
0.05
B21
40-70
6.3
5.6
0.09
4.7
6.1
0.1
0.4
B22
70-90
6.4
5.7
0.09
3.8
7.3
0.1
0.5
B23
90+
6.4
5.8
0.1
3.2
7.4
0.05
0.5

Horizon
Horizon Depth
(cm)
Acidity
meq/100g
Oxidisable Organic Carbon
%
Total
Nitrogen
%
Field
Capacity
pF2.5
Wilting
Point
pF4.2
Coarse Sand
(0.2- 2.0 mm)
Fine Sand
(0.02- 0.2 mm)
Silt
(0.002- 0.02 mm)
Clay
(<0.002 mm)
A1
0-20
4.3
0.32
27.7
10.9
14
45
17
14
A21
20-30
16.9
3.8
19
53
19
9
A22
30-40
16.1
4.4
24
48
15
12
B21
40-70
9.8
40.6
28.8
3
10
5
80
B22
70-90
42.3
28.3
3
12
4
78
B23
90+
40.5
28.1
4
12
5
75


Profile Described By: Mark Imhof and Austin Brown (June 1998).
CC BY 4.0 AU

This page contains material sourced from the Victorian Resources Online (VRO) website, originally published by the State Government of Victoria.

The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

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