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Profile Number 66

Laboratory number: 0944A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 66Profile Description
Site number:391A10-10 cmVery dark greyish brown (10YR 3/2) clay loam; common distinct yellowish brown (<5 mm) mottles; weak coarse (20 mm) subangular blocky structure; porous; rough-ped fabric; hard when dry; abundant grass roots; pH 5.8; clear smooth boundary
Classification:Northcote (1979) – Dy3.23
Stace et al (1972) – Solodic Soil
A210-18 cmDark greyish brown (10YR 4/2) clay loam; common distinct yellowish brown (<5 mm) mottles; apedal; earthy fabric; very hard when dry; abundant grass roots; pH 5.5; clear smooth boundary
Location:Traralgon 8221, grid ref. 767918
4 km E of Cowwarr
B2118-30 cmYellowish brown (10YR 5/6) medium clay; common prominent grey (5-15 mm) mottles; weak coarse (30 mm) subangular blocky structure; porous; rough-ped fabric; very hard when dry; pH 8.5; smooth gradual boundary
Land system, component: Valencia, 1B2230-90 cmStrong brown (7.5YR4/6) heavy clay; common faint yellowish brown (5-15 mm) mottles; moderate very coarse (60 mm) angular blocky structure; smooth-ped fabric; extremely hard when dry; common roots; pH 8.5; smooth gradual boundary
Topography:Pleistocene alluvial terrace, 0% slopeB390-130 cmDark yellowish brown (10YR 4/4) heavy clay; few distinct red (5-15 mm) mottles; moderate; very coarse (70 mm) angular blocky structure; smooth-ped fabric; extremely hard when dry; 20% gravel or nodules up to 80 mm; common roots; pH 8.7: smooth gradual boundary
Elevation:60 mC130-170 cmDark red (2.5YR 3/6) heavy clay; strong medium (15 mm) angular blocky structure; smooth-ped fabric; very hard when dry; 5% manganiferous nodules up to 5 mm; pH 8.5
Drainage:Poor
Parent material:Pleistocene fine-textured alluvium
Vegetation:Cleared; grassland with Paspalum dilatatum, Poa australis and Romulea rosea
LABORATORY ANALYSES 944
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
0-10
SiL
0
4
28
37
23
5.5
95
0.010
A2
10-18
SiL
0
5
30
13
5.4
63
0.007
B21
20-30
SiCL
0
4
30
39
26
5.7
56
0.006
B22
30-60
C
1
1
9
17
71
7.5
330
0.036
B3
90-120
C
0
<1
11
20
67
8.4
900
0.11
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
0-10
3.17
0.29
14
1.4
15
220
0.026
0.29
1.8
1.9
0.6
0.5
17.6
10
11
3
3
73
A2
10-18
1.43
0.14
13
1.9
9
60
0.017
0.24
1.0
1.3
0.3
0.4
13.4
7
10
2
3
78
B21
20-30
0.59
0.065
12
2.7
47
30
0.012
0.29
0.9
2.1
0.2
0.6
10.8
8
19
2
6
65
B22
30-60
4.6
0.011
0.92
3.0
11.2
1.0
4.5
25.1
12
45
4
18
21
B3
90-120
4.1
0.011
0.87
1.9
9.9
0.8
5.7
20.4
9
49
4
28
10
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