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Profile Number 55

Laboratory number: 0990A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 55Profile Description
Site number:660O25-0 cmBlack decayed organic matter, loamy texture; pH 3.5; clear boundary
Classification:Northcote (1979) – Dr3.21
Stace et al (1972) – Red Podzolic Soil
A10-9 cmDark brown (10YR 4/3) sandy loam; apedal; earthy fabric; friable when moist; 2% charcoal fragments up to 5 mm, pH 5.0; gradual boundary
Location:Bairnsdale 8422, grid ref. 832240
10 km E of Bruthen
A29-32 cmStrong brown (7.5YR 5/6) sandy loam; apedal; earthy fabric; friable when moist; 1% charcoal fragments up to 15 mm; 1% ferruginous nodules up to 10 mm; pH 5.5; abrupt boundary
Land system, component: Westbury 1, 1B232-110 cmYellowish red (5YR 5/8) medium clay; common distinct red (5-15 mm) mottles in lower half of B2, becoming more abundant with depth; moderate medium (15 mm) angular blocky structure; smooth-ped fabric; firm when moist; pH 6.0; gradual boundary
Topography:2% slope facing N on edge of plateau remnantB3110-135 cmYellowish red (5YR 5/8) medium clay; abundant distinct red (5-15 mm) and common distinct grey (>15 mm) mottles; moderate medium (15 mm) angular blocky structure; smooth-ped fabric; firm when moist; pH 6.0; gradual boundary
Elevation:165 mC135-150 cmLight brownish grey (10YR 6/2) medium clay; abundant prominent red and common distinct yellowish brown (5-15 mm) mottles; moderate angular blocky structure; smooth-ped fabric; pH 5.4.
Drainage:Moderate
Parent material:Tertiary unconsolidated fine-textured sediments
Vegetation:Regenerating after logging. Open forest II: Eucalyptus globoidea and E. sieberi, Pteridium esculentum, Daviesia latifolia and Acacia myrtifolia common in understorey. Herb layer sparse.
LABORATORY ANALYSES 990
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

%
O2
5-0
SL
14
22
19
9
13
4.6
34
0.002
A1
0-9
SL
1
32
43
10
12
5.3
30
0.002
A2
20-30
L
0
29
42
12
12
5.4
26
0.001
B2
32-60
C
5
19
25
8
43
5.6
30
0.001
B2
60-90
C
4
8
10
3
73
5.7
37
0.003
B2
90-110
C
1
8
10
4
69
5.4
49
0.005
B3
110-120
C
<1
9
12
5
66
5.2
54
0.006
C
135-150
C
1
13
18
4
60
4.9
59
0.007
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
O2
5-0
9.4
0.38
32
14
200
0.008
0.04
0.5
0.5
0.6
0.4
88.4
1
1
1
<1
97
A1
0-9
1.4
0.056
33
1.0
6
40
0.004
0.01
0.2
0.4
0.1
0.2
13.4
2
3
1
2
92
A2
20-30
1.5
3
40
0.07
0.3
0.1
0.1
11.8
1
3
1
1
94
B2
32-60
B2
60-90
4.2
3
30
0.005
0.03
0.3
6.8
0.1
0.7
24.7
1
28
<1
3
68
B2
90-110
7.0
0.1
6.3
0.1
0.7
26.8
<1
24
<1
3
72
B3
110-120
0.07
5.2
0.09
0.6
23.7
<1
22
<1
3
74
C
135-150
0.2
3.4
0.05
0.5
22.0
1
15
<1
2
82
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