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Profile Number 6

Laboratory number: 0981 A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 6Profile Description
Site number:555All 0 - 20 cmDark reddish brown (5YR 2/2) organic loam; strong crumb structure; rough-ped fabric; friable when moist; pH 5.0; clear boundary
Classification:Northcote (1979) - Um6.21
Stace et al. (1972) - Alpine Humus Soil
Al2 20 - 30 cmDark reddish brown (5YR 2/2) organic loam; strong fine (5 mm) subangular blocky structure; rough-ped fabric; hard when dry; 1% basalt fragments up to 10 mm; pH 5.0; clear boundary
Location:Dargo 8323, grid ref. 162908
Gow Plain 4 km SE of Dargo High Plains
AC 30 - 40 cmDark reddish brown (5YR 3/2) stony loam; apedal; earthy fabric; soft when dry; 30% basalt fragments up to 60 mm, some soft black inclusions (reacting with H202) up to 5 mm; pH 5.5; clear boundary
Land system, component: Nunniong, 2C40 - 88+ cmReddish brown (5YR 4/4) stony clay loam; abundant distinct dark reddish brown (<5 mm) mottles; apedal; friable when moist; 20% basalt fragments up to 10 mm; pH 5.5 - 6.0
Topography:4% slope facing S on plateau, hummocky microrelief
near water- course
Elevation:1500 m
Drainage:Moderate
Parent material:Tertiary basalt
Vegetation:Grassland of predominantly Poa sp.
LABORATORY ANALYSES 981
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
µS/cm
Cl-

%
Depth

cm
Composition

%
0 - 10
20 - 30
30 - 40
40 - 60
60 - 88
SiL
SiL
SiL
-
SiL
2
12
39
30
34
5
12
17
-
16
28
38
32
-
27
37
31
34
-
30
24
17
17
-
24
65
39
26
14
5.2
5.4
5.6
-
5.9
56
28
23
-
16
0.004
0.002
0.002
-
0.002
20 - 30
allophane mainly; some kaolinite
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
0 - 10
9.7
0.92
14
4.9
81
280
0.13
0.15
0.9
0.6
0.9
0.03
82.3
1
1
1
<1
97
20 - 30
6.2
0.61
13
4.4
95
100
0.11
0.12
0.6
0.3
0.5
0.01
78.8
1
<1
1
<1
98
30 - 40
3.6
0.39
12
5.2
0.11
0.17
0.6
0.3
0.4
0.02
62.5
1
1
1
<1
97
40-60
60 - 88
6.6
0.15
0.11
4.1
2.3
0.3
0.05
43.0
10
5
1
<1
84
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