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Profile Number 44

Laboratory number: 0943 A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 44Profile Description
Site number:390All 0 - 6 cmVery dark greyish brown (10YR 3/2) silty clay loam; common prominent reddish brown (<5 mm) mottles; strong medium (5 mm) crumb structure; rough-ped fabric; very hard when dry; common fine roots; pH 5.5; abrupt smooth boundary
Classification:Northcote (1979) - Gn4.51
Stace et al. (1972) - Humic Gley
Al26 - 20 cmVery dark greyish brown (10YR 3/2) silty clay; few faint yellow (<5 mm) mottles; moderate coarse (20 mm) subangular blocky structure; smooth-ped fabric; extremely hard when dry; common fine roots; pH 5.8; abrupt smooth boundary
Location:Maffra 8222, grid ref. 803944 2 km S of HeyfieldB220 - 60 cmGreyish brown (10YR 5/2) heavy clay; abundant prominent yellowish brown (>15 mm) mottles; strong coarse (30 mm) subangular blocky structure; rough-ped fabric; very hard when dry; 1% ferruginous nodules (5 mm), 1% charcoal fragments (10 mm); pH 6.2; clear smooth boundary
Land system, component: Maffra 1, 2C160 - 100 cmDark grey (5Y 4/1) medium clay; common prominent yellowish brown (<5 mm) mottles; moderate coarse (20 mm) subangular blocky structure; smooth-ped fabric; very firm when moist; few roots; pH 8.0; gradual smooth boundary
Topography:Alluvial terrace, 0% slopeC2100 - 170+ cm Grey (5Y 5/1) heavy clay; common prominent yellowish brown (5 - 15 mm) mottles; apedal; earthy fabric; firm when moist; few roots; pH 9.0
Elevation:40 m
Drainage:Poor
Parent material:Holocene fine-textured alluvium
Vegetation:Cleared; mostly introduced grasses with occasional Eucalyptus polyanthemos
Remarks:
LABORATORY ANALYSES 943
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

%
All
Al2
B2
Cl
C2
0 - 6
10 - 20
30 - 60
60 - 90
100 - 120
SiC
SiC
SiC
SiC
SiCL
0
0
1
0
0
1
1
1
3
2
6
9
10
12
15
34
39
41
43
43
40
46
46
40
39
5.4
5.7
6.1
7.7
8.6
120
57
80
140
220
0.009
0.004
0.007
0.054
0.020
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
All
Al2
B2
Cl
C2
0 - 6
10 - 20
30 - 60
60 - 90
100 - 120
7.76
2.50
0.70
0.25
14
13
1.6
2.0
3.5
3.8
3.3
65
34
260
80
0.065
0.030
0.039
0.029
0.031
0.53
0.41
0.51
0.47
0.49
5.4
4.4
2.2
2.7
2.6
4.5
4.5
5.6
6.6
6.0
0.8
0.3
0.2
0.1
0.1
0.8
0.7
1.5
3.3
4.1
39.0
25.0
19.6
15.5
12.8
14
18
11
17
20
12
18
29
43
47
2
1
1
1
1
2
3
8
21
32
70
60
51
18
0
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