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Profile Number 33

Laboratory number: 0971 A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 33Profile Description
Site number:489A1 0 - 10 cm Very dark greyish brown (10YR 3/2) clay loam; moderate subangular blocky structure (7 mm); rough-ped fabric; very hard when dry; common roots; pH 5.7; abrupt smooth boundary
Classification:Northcote (1979) - Gn3.15 Stace et al. (1972) - Terra RossaA2 10 - 15 cmDark brown (7.5YR 3/2) light clay; moderate angular blocky structure (10 mm); rough-ped fabric; very hard when dry; common roots; pH 5.5; clear boundary
Location:Omeo 8423, grid ref. 742911 2 km SE of BindiB21 15 - 90 cmDark reddish brown (5YR 3/4) medium clay; strong subangular blocky structure (6 mm); smooth-ped fabric; firm when moist; common roots to 60 cm, few to 90 cm; pH 7.0; diffuse boundary
Land system, component: Bindi, 3B22 90 - 180 cmYellowish red (5YR 4/6) medium clay; structure and consistence not recorded but probably similar to B21; 2% calcareous nodules (2 mm); pH 7.0
Topography:Mid-slope of alluvial fan, 10% gradient
Elevation:480 m
Drainage:Good
Parent material:Fine-textured alluvium and colluvium from limestone hills
Vegetation:Cleared; mostly introduced grasses
Remarks:Sampling site is within an old disused sheepyard
LABORATORY ANALYSES 971
Horizon
Sample
Depth

cm
Lab.
texture
Particle size distribution
Atterberg limits
1:5 soil water suspension
Clay mineralogy by x-ray diffraction
Gravel

%
Coarse
sand
% f.e.
fine sand

% f.e.
Silt

% f.e.
Clay

% f.e.
liquid
limit
%
plastic
limit
%
plasticity
index
%
linear
shrinkage
%
pH
EC
25°C
uS/cm
Cl-

%
Depth

cm
Composition

%
Al
0 - 5
SiCL
15
1
24
33
34
150
0.006
60 - 90
mica 80;
kaolinite 20
Al
5 - 10
20
53
26
27
12
6.0
47
0.003
A2
10 - 15
SiC
5
2
28
27
40
30
0.002
B21
20 - 30
C
7
2
28
24
44
45
19
26
12
6.8
26
0.002
B22
90 - 120
C
4
3
21
14
59
22
0.002
B22
150 - 180
C
6
3
17
16
59
23
0.001
Horizon
Sample
Depth

cm
Org. C


%
Total N


%
1.3C
N
Free
Fe2O3

%
Available
HCl extract
Exchangeable cations
P
ppm
K
ppm
P
%
K
%
Ca
Mg
K
Na
CEC
Ca
% of CEC
Mg
K
Na
H
Milliequivalents/100g
Al
0 - 5
4.2
0.40
14
2.7
33
760
0.041
0.72
11.8
1.3
2.1
0.05
27.0
44
5
8
<1
43
Al
5-10
A2
10 - 15
1.8
0.19
12
3.0
9
360
0.032
0.62
9.8
0.7
1.0
0.05
20.4
48
3
5
<1
44
B21
20 - 30
0.69
0.097
9
3.6
5
240
0.027
0.72
10.7
0.7
0.7
0.05
17.8
60
4
4
<1
32
B22
90 - 120
4.4
0.027
0.96
13.9
2.3
1.0
0.2
27.3
51
8
4
1
36
B22
150 - 180
4.0
0.019
0.98
16.9
2.8
1.0
0.3
28.8
59
10
3
1
27
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