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Profile Number 16

Laboratory number: 1007A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 16Profile Description
Site number:728A10 - 8 cmDark brown (10YR 3/3) light clay; moderate medium (10 mm) subangular blocky structure; rough-ped fabric; very porous; firm when moist; 1% bedrock fragments up to 2 mm; abundant roots; pH 5.5; gradual smooth boundary
Classification:Northcote (1979) - Uf6.12
Stace et al.(1972) - Brown Earth
B28 - 42 cmDark brown (10YR 4/3) medium clay; common faint brown (>15 mm) mottles; moderate medium (10 mm) subangular blocky structure; rough-ped fabric; moderately porous; very firm when moist; abundant roots; 5% feldspathic mudstone fragments up to 30 mm; pH 5.5; gradual smooth boundary
Location:Traralgon 8221, grid ref. 586456
Road cutting 27 km S of Traralgon near Tarra Valley National Park
B342 - 90 cmDark yellowish brown (10YR 4/4) medium clay; common faint yellowish brown (>15 mm) mottles; moderate medium (100 mm) angular blocky structure; rough-ped fabric; firm when moist; 20% feldspathic mudstone fragments up to 50 mm; common roots; pH 5.0
Land system, component: Jeeralang, 1R90+ cmBedrock
Topography:Mountain mid-slope, W aspect, 37% gradient
Elevation:520 m
Drainage:-
Parent material:Cretaceous mudstone (feldspathic)
Vegetation:Regenerating shrubby open forest II: Eucalyptus globulus, E. obliqua and Acacia melanoxylon; Goodenia ovata, Olearia lirata, Bedfordia arborescens, Correa lawrenciana and Coprosma quadrifida predominant in understorey
LABORATORY ANALYSES 1007
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
uS/cm
Cl-

%
Depth

cm
Composition

%
Al
B2
B2
B3
0 - 8
10 - 20
30 - 42
60 - 78
CL
C
C
C
1
0
0
0
9
5
3
5
27
25
23
26
23
19
16
15
33
42
50
49
4.6
5.4
5.2
5.0
65
46
42
40
0.004
0.002
0.001
0.002
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 - 8
3.3
0.26
17
3.2
10
460
0.021
0.24
2.7
1.6
1.3
0.3
36.1
7
4
4
1
84
B2
10 - 20
2.5
0.19
17
3.2
8
400
0.017
0.25
1.7
1.1
1.0
0.2
31.4
5
4
3
1
87
B2
30 - 42
3.5
0.012
0.21
1.3
0.9
0.8
0.3
27.9
5
3
3
1
88
B3
60 - 78
3.7
0.012
0.19
0.6
0.9
0.5
0.2
28.8
2
3
2
1
82
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