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Profile Number 32

Laboratory number: 0975 A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 32Profile Description
Site number:493A10 - 22 cmDark reddish grey (2.5YR 3/1) light sandy clay loam; strong crumb structure; rough-ped fabric; soft when dry; abundant roots; pH 6.0; clear wavy boundary
Classification:Northcote (1979) - Gn3.11 Stace et al (1972) – KrasnozemB122 - 72 cmDark reddish brown (2.5YR 3/4) sandy clay loam; strong granular structure; smooth-ped fabric; slightly hard when dry; common roots; pH 5.8; gradual wavy boundary
Location:Bairnsdale 8422, grid ref. 808484 Road cutting 23 km N of Bruthen, 6 km E of Tambo CrossingB2 72 - 95 cm Yellowish red (2.5YR 4/6) clay loam; strong granular structure; smooth-ped fabric; hard when dry; pH 4.0; clear wavy boundary
Land system, component: Wellington, 1C95 - 120+ cmYellowish red (2.5YR 4/8) sandy clay loam; apedal; rough-ped fabric; very hard when dry; pH 5.5
Topography:Mid-slope of ridge with 35% gradient, E aspect
Elevation:650 m
Drainage:Good
Parent material:Devonian rhyolite
Vegetation:Regenerating after logging; layered open forest II: Eucalyptus obliqua, E. regnans and E. cypellocarpa with Acacia dealbata, A. melanoxylon, Pomaderris aspera, Pteridium esculentum and Tetrarrhena juncea common in understorey
LABORATORY ANALYSES 975
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
B1
B2
C
0 - 10
30 - 60
72 - 90
95 - 120
L
CL
C
CL
11
2
2
7
33
22
25
30
27
26
19
17
20
22
15
18
14
28
40
35
62
34
28
15
6.0
5.7
5.4
5.1
53
23
17
17
0.005
0.002
0.003
0.001
72 - 90
Kaolinite 60;
Chlorite40
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
10.5
0.66
21
3.9
9
440
0.037
0.12
3.5
1.7
1.3
0.1
67.6
5
3
2
<1
90
Bl
30 - 60
5.1
0.023
0.08
0.2
0.08
0.8
0.08
39.2
1
<1
2
<1
97
B2
72 - 90
5.9
0.020
0.06
0.1
0.1
0.5
0.07
18.5
1
1
3
<1
95
C
95 - 120
6.3
0.023
0.04
0.1
0.08
0.4
0.07
11.1
1
1
4
1
93
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