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Profile Number 69

Laboratory number: 0945A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 69Profile Description
Site number:392A10-20 cmVery dark greyish brown (10YR 3/2) silty loam; few distinct yellowish brown (<5 mm) mottles; strong fine (5 mm) subangular blocky structure; rough-ped fabric; hard when dry; common fine roots; pH 6.0; clear smooth boundary
Classification:Northcote (1979) – Dd2.23
Stace et al (1972) – Solodic Soil
A220-45 cmDark brown (10YR 4/3) silty clay loam; few faint yellowish brown (<5 mm) mottles; moderate medium (10 mm) subangular blocky structure; rough-ped fabric; very hard when dry; common fine roots; pH 6.5; clear smooth boundary
Location:Traralgon 8221, grid ref. 843888
12 km N of Rosedale
B245-100 cmVery dark greyish brown (10YR 3/2) medium clay; abundant prominent yellowish brown (>15 mm) mottles; strong coarse (30 mm) angular blocky structure; smooth-ped fabric; very firm when moist; common fine roots; pH 7.0; clear smooth boundary
Land system, component: Sale 1B3100-170+ cmDark brown (10YR 4/3) medium clay; abundant prominent yellow (>15 mm) mottles; moderate coarse (30 mm) angular blocky structure; smooth-ped fabric; very firm when moist, pH 8.5
Topography:1% slope on alluvial terrace
Elevation:40 m
Drainage:Poor
Parent material:Pleistocene fine-textured alluvium
Vegetation:Cleared; grassland with predominantly Phalaris aquatica
Remarks:Monolith taken
LABORATORY ANALYSES 945
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
25C
S/cm
Cl-

%
Depth

cm
Composition

%
A1
0-10
SiCL
0
1
33
27
33
5.7
58
0.004
60-90
Mica 60;
Kaolinite 25;
Illite 15
A2
30-45
SiCL
0
1
33
36
29
26
15
11
7.0
5.9
42
0.003
B2
60-90
SiC
0
<1
11
25
62
55
23
32
14
6.6
280
0.034
B3
100-120
SiC
0
1
13
35
50
7.9
450
0.051
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
A1
0-10
2.55
0.22
15
1.5
12
260
0.021
0.36
2.6
2.2
0.8
0.2
16.4
16
13
5
1
65
A2
30-45
2.0
0.012
0.45
1.2
1.9
0.4
0.4
11.2
11
17
4
4
64
B2
60-90
3.8
0.012
0.81
3.1
8.5
0.4
2.6
20.7
14
41
2
13
29
B3
100-120
3.8
0.017
0.71
3.3
8.4
0.3
3.4
17.3
19
49
2
20
10
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