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CRC11

Location: Ararat

Australian Soil Classification: Bleached-Mottled, Magnesic, Yellow CHROMOSOL
General Landscape Description: Mid-slope of hill (SE aspect) with colluvial deposits.
Site Description: Grazing paddock – runoff demonstration site.
Geology: Ordovician thinly bedded shale (micaceous).

Image: GH1-4 - Landscape
CRC11 Landscape

Soil Profile Morphology

Surface Soil

A1
0-10 cm
Dark brown (10YR3/3); light fine sandy clay loam; weak coarse-medium blocky structure; weak consistence (moderately moist); pH 5.0; sharp change to:
Image: GH2 Profile
CRC11 Profile





A2 10-35 cmLight pinkish brown (7.5YR7/4) (with some A horizon infill); sandy loam; weak medium blocky structure; weak consistence (moderately moist); pH 5.7; clear change to:
Subsoil
B1 35-45 cmPale yellow (2.5Y714) with brownish yellow (10YR6/8) mottles; fine sandy clay loam; weak-moderate coarse blocky structure; weak consistence (moderately moist); pH 6.3; clear change
B21 45-70 cm Light yellowish brown (10YR6/4) with brownish yellow (10YR6/8) and dark red (2.5YR4/8) mottles; light to medium clay; moderate very coarse prismatic, parting to moderate coarse blocky and moderate to strong medium polyhedral structure; manganese staining in patches; pH 6.6:
B2270-95 cmBrownish yellow (10YR6/8) with light yellowish brown (10YR6/4) and dark red (2.5YR4/8) mottles; light medium clay (sandy); moderate-strong coarse-medium polyhedral structure; weak consistence (moist); pH 6.8:
B23 95-120 cmReddish yellow (7.5YR6/8) with very pale brown (10YR7/3) mottles; medium clay; moderate very coarse prismatic, parting to moderate to strong coarse-medium blocky structure; firm consistence (moist); manganese staining (2-5%); pH 6.7:

Key Profile Features


Key Profile Characteristics

pH
Salinity Rating
Surface
(A1 horizon)
Strongly Acid
Very Low
Non-Sodic
None
Subsoil
(B21c horizon)
Slightly Acid
Very Low
Non-Sodic
None1
Deeper subsoil
(at cm)
Slightly Acid
Very Low
Non-Sodic
None
1 Moderate dispersion after remoulding
Image: GH2 graphs


Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
dS/m
Exchangeable Aluminium
ppm
Exchangeable Acididty
meq/100g
Exchangeable Cations
Coarse Sand
(0.2-2.0 mm)
%
Fine Sand
(0.02-0.2 mm)
%
Silt
(0.002-0.02 mm)
%
Clay
(<0.002 mm)
%
Field Capacity
% w/w
Wilting Point
% w/w
Ca
Mg
K
Na
meq/100g
A1
0-10
5.0
4.4
0.08
29
41
1.8
1.2
0.30
0.14
13
56
8
20
20.4
9.2
A2
10-35
5.7
5.1
<0.05
<10
2.7
0.44
0.87
0.09
0.11
14
60
14
9
19.4
3.1
B1
35-45
6.3
5.2
<0.05
<10
4.7
0.90
2.6
0.11
0.22
14
49
15
18
11.8
7.0
B21
45-70
6.6
5.5
<0.05
6.2
1.0
6.0
0.25
0.44
11
39
14
37
15.4
13.6
B22
70-95
6.8
5.9
<0.05
4.1
0.45
5.7
0.22
0.47
18
42
12
27
22.9
10.5
B23
95-120
6.7
5.9
<0.05

 Profile Described By: Mark Imhof, Austin Brown and Malcolm McCaskill, November 2003.
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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