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Profile Number 27

Laboratory number: 0939 A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 27Profile Description
Site number:386A10 - 20 cmBlack (10YR 2/1) light clay; strong coarse (10 mm) subangular blocky structure; rough-ped fabric; friable when moist; 5% quartz gravel up to 10 mm; abundant grass roots; pH 6.0; clear wavy boundary
Classification:Northcote (1979) - Uf6.11
Stace et al. (1972) - Prairie Soil		B220 - 35 cmVery dark grey (10YR 3/1) medium clay; moderate coarse (20 mm) subangular blocky structure; rough-ped fabric; firm when moist; few roots; pH 6.5; gradual smooth boundary
Location:Maffra 8222, grid ref. 983106 13 km N of MaffraB335 - 60 cmDark reddish brown (5YR 3/2) sandy clay; weak coarse (40 mm) subangular blocky structure; rough-ped fabric; few roots; pH 7.0; gradual wavy boundary
Land system, component: Maffra 1, 1C160 - 150 cmDark reddish brown (5YR 3/3) light sandy clay; common distinct yellowish brown (5 - 15 mm) mottles; weak coarse (40 mm) angular blocky structure; rough-ped fabric; firm when moist; few roots; pH 7.0; clear boundary
Topography:Alluvial terrace, 0% slopeC2150 - 170 cmReddish brown (5YR 4/4) sandy loam; common distinct yellowish brown (5 - 15 mm) mottles; apedal; earthy fabric; friable when moist; pH 7.5
Elevation:40 m
Drainage:Good
Parent material:Holocene fine-textured alluvium
Vegetation:Cleared; grassland, mostly of introduced species, and scattered Eucalyptus tereticornis
Remarks:Monolith taken
LABORATORY ANALYSES 939
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
25°C
uS/cm
Cl-

%
Depth

cm
Composition

%
Al
0 - 10
SiCL
4
4
31
27
31
5.7
43
0.005
20 - 30
    mica 50;
Al
10 - 20
0
46
27
19
10
    Kaolinite 10;
B2
20 - 30
SiCL
0
1
36
30
30
37
22
15
10
6.2
31
0.003
    illite 40
B3
35 - 60
SiL
0
3
45
27
23
6.7
23
0.002
CI
90 - 120
SiL
0
1
44
32
24
7.3
35
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 - 10
4.76
0.27
23
2.1
9
120
0.038
0.34
8.7
2.9
0.5
0.3
27.6
32
11
2
1
54
Al
10-20
B2
20 - 30
1.79
0.15
16
2.4
4
50
0.031
0.36
10.1
3.3
0.3
0.3
23.0
44
14
1
1
40
B3
35 - 60
2.2
0.021
0.31
6.8
2.8
0.2
0.3
14.1
48
20
1
2
29
Cl
90 - 120
2.8
0.021
0.29
5.3
3.4
0.2
0.6
12.8
41
27
2
5
25
Horizon
Sample
Depth


cm
Bulk
Density


g/mL
Total
Porosity


%(V/V)
Volumetric
field
capacity

%
Water content
wilting
point
%
Calculated
Available
Water

%
Calculated
macro-porosity

%(V/V)
Al
0 - 10
1.04
60.7
42.6
20.4
22.2
18.1
B2
20 - 30
1.50
43.2
33.2
20.4
12.8
10.0
B3
35 - 60
1.56
41.0
30.9
18.2
12.7
10.1
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