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CSLP6

Location: Simpson


Australian Soil Classification: Bleached-Sodic, Eutrophic, Brown KUROSOL

General Landscape Description: Hill slope or scarp face.
Site Description: Lower slope within a grazing paddock.
Geology: Paleogene Sediments - Gellibrand Marl and colluvium.

Image: CSLP6 Landscape
CSLP6 Landscape

Soil Profile Morphology:

Surface Soil

A10-9 cm Very dark greyish brown (10YR3/2); fine sandy loam; weak coarse sub-angular blocky, parting to moderate fine sub-angular blocky structure; earthy fabric; very firm consistence dry; many roots present; pH 5.2; clear and wavy change to:

Image: CSLP5&6 Profile
CSLP6 Profile.
A29-25 cmLight olive brown (2.5Y5/3) conspicuously bleached (10YR7/2dry), with faint strong brown (7.5YR4/6) and yellowish brown (10YR5/6) mottles common; silty clay loam; weak very coarse sub-angular blocky structure; earthy fabric; very firm consistence dry; contains very few, fine sized, ferruginous concretions; many roots present; pH 4.9; clear and wavy change to:

Subsoil

B21
25-50 cm Light olive brown (2.5Y5/3), with a few faint yellowish brown (10YR5/6) and strong brown (7.5YR4/6) mottles; medium heavy clay; moderate very coarse prismatic, parting to strong medium angular blocky structure; smooth fabric; firm consistence moderately moist; many roots present; pH 5.2; gradual change to:

B2250-75 cmLight olive brown (2.5Y5/3), with many distinct yellowish brown (10YR5/8) mottles; heavy clay; moderate coarse prismatic, parting to moderate medium prismatic structure; slight slickensides evident; smooth fabric; firm consistence moist; a common amount of roots present; pH 5.0; gradual change to:

B2375-110 cmLight grey (2.5Y6/1), with many prominent strong brown (7.5YR5/8) and a few distinct red (2.5YR5/8) mottles; heavy clay; weak very coarse polyhedral and lenticular, parting to moderate fine polyhedral structure; smooth fabric; firm consistence moist; very few roots present; pH 5.0; diffuse change to:

B24110-160 cmLight grey (2.5Y7/1), with prominent yellowish red (5YR5/6) and reddish yellow (7.5YR4/6) mottles; heavy clay; weak very coarse polyhedral and lenticular, parting to weak medium polyhedral and lenticular structure; smooth fabric; firm consistence moist; very few roots present; pH 5.2.

NOTE: Some weak columnar structure in subsoil.


Soil Profile Characteristics:


pH


Salinity Rating
Surface
(A1 horizon)
Strongly Acid
Very Low
Non-Sodic
None1
Subsoil
(B21 horizon)
Strongly Acid
Very Low
Non-Sodic
None
Deeper Subsoil
(at 75-110 cm)
Strongly Acid
Low
Sodic
None
1 Moderate dispersion after remoulding.

Graph: CSLP6
This entire profile is strongly acid. The salinity rating is very low to low throughout the profile.The surface and upper subsoil are non-sodic. The deeper subsoil is sodic.
    The clay content increases significantly at the A/B horizon boundary.
The exchangeable aluminium levels in the surface are low increasing to very high at 50-70 cm before decreasing
with depth.

Horizon
Horizon Depth
(cm)
pH
(water)
pH
CaCl2
EC
(dS/m)
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A1
0-9
5.2
4.4
0.06
2.3
1.5
0.26
0.26
A2
9-25
4.9
4.4
0.17
6.9
1.7
0.44
0.3
B21
25-50
5.2
4.4
0.09
4.6
5
0.52
0.54
B22
50-75
5
4.4
0.13
4.5
5.8
0.41
0.86
B23
75-110
5
4.3
0.22
7.1
8.7
0.37
2.5
B24
110-160
5.2
4.6
0.36
6.5
7.6
0.2
2.5


Horizon
Horizon Depth
(cm)
Total
Nitrogen
%


Organic Carbon
g/100g
Exchangeable
Acidity
meq/100g

Exchangeable
Aluminium
mg/kg
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
0-9
0.072
1
8.2
140
27.0
10.1
<1.0
54
20
24
A2
9-25
0.66
8.9
18
61
48.1
19.6
12
41
16
23
B21
25-50
0.64
11
210
35.9
18.5
<1.0
32
18
46
B22
50-75
11
250
38.1
19.9
<1.0
30
11
58
B23
75-110
8.2
180
42.5
21.2
<1.0
27
15
53
B24
110-160
8.1
40
44.6
21.9
<1.0
28
15
54

Profile Described By: David Rees, Michelle Davey, Nathan Robinson (November 2008).
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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