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Profile Number 56

Laboratory number: 0962A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 56Profile Description
Site number:480A10-5 cmVery dark greyish brown (10YR3/2) silty loam; weak crumb structure; rough-ped fabric; hard when dry; 2% ferruginous nodules (10 mm); pH 6.0; clear boundary
Classification:Northcote (1979) – Dy2.33
Stace et al (1972) – Solodic Soil
A25-20 cmDark brown (10YR 3/3) silty loam; apedal; earthy fabric; very hard when dry; 2% ferruginous nodules (10 mm) and 5% parent rock fragments (20 mm); pH 6.5; abrupt boundary
Location:Maffra 8222, grid ref. 684329
2 km W of Windmill Hill
B220-90 cmYellowish brown (10YR 5/4) heavy clay; strong fine (10 mm) angular blocky structure; smooth-ped fabric; very hard when moist; 5% parent rock fragments (10 mm); pH 7.5; diffuse boundary
Land system, component: Avon, 2B390-150+ cmYellowish brown (10YR 5/6) medium clay; common faint reddish brown mottles (<5 mm); strong coarse (20 mm) angular blocky structure; smooth-ped fabric; firm when moist; 5% parent rock fragments (10 mm); pH 8.0
Topography:Spur crest, W Aspect, 5% gradient
Elevation:210 m
Drainage:Poor
Parent material:Carboniferous shale and siltstone
Vegetation:Open forest II: Eucalyptus tereticornis and E. melliodora
LABORATORY ANALYSES 962
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
0-5
L
19
11
55
22
12
6.3
110
0.009
A2
10-20
LS
17
10
56
21
9
19
17
2
0.4
7.0
54
0.005
B2
20-30
C
17
7
32
11
47
6.6
360
0.037
B2
60-90
C
15
6
26
12
53
69
18
51
17
7.9
700
0.074
B3
120-150
C
12
6
34
12
46
8.2
590
0.056
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
0-5
5.4
0.38
18
1.4
23
460
0.017
0.19
6.4
2.0
1.1
0.2
21.6
30
9
5
1
55
A2
10-20
1.1
0.091
16
2.1
6
180
0.016
0.10
3.0
1.5
0.5
0.3
8.7
35
17
6
3
39
B2
20-30
0.97
0.070
18
3.0
1
18
0.011
0.43
2.5
13.2
0.4
4.2
29.
8
45
1
14
32
B2
60-90
2.3
0.012
0.58
2.1
15.3
0.3
5.2
27.4
8
56
1
19
16
B3
120-150
2.3
0.010
0.51
2.0
13.7
0.3
4.8
23.6
8
58
1
20
13
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