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Profile Number 50

Laboratory number: 0997A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 50Profile Description
Site number:709A10-25 cmVery dark grey (10YR 3/1) loam; weak subangular blocky structure; rough-ped fabric; slightly hard when dry; pH 5.0; gradual boundary
Classification:Northcote (1979) – Dy3.21
Stace et al (1972) - Soloth
A2125-75 cmDark greyish brown (10YR 4/2) sandy clay loam; few faint yellowish brown mottles; apedal; hard when dry; pH 5.5; gradual boundary
Location:Moe 8121, grid ref. 475572
2 km SW of Churchill
A2275-100 cmGreyish brown (10YR 5/2) sandy clay loam; common distinct yellowish brown (5-15 mm) mottles; weak angular blocky structure; rough-ped fabric; hard when dry; pH 6.5; clear boundary
Land system, component: Westbury 2, 2B2100-130 cmGreyish brown (10YR 5/2) sandy clay; common distinct yellowish brown (5-15 mm) and pale brown mottles; strong angular blocky structure; smooth-ped fabric; very hard when dry; pH 7.0; clear boundary
Topography:Mid-slope of rise, 6% slopeIIC130-145 cmYellowish brown (10YR 5/6) clayey coarse sand; apedal; soft when dry; pH 7.0; gradual boundary
Elevation:60 mIIIC145-150+ cmGreyish brown (10YR5/2) heavy clay; common yellowish brown and pale brown (5-15mm) mottles; strong angular blocky structure; smooth-ped fabric; firm when moist; pH 7.0
Drainage:Moderately good
Parent material:Tertiary and Pleistocene sediments
Vegetation:Cleared: a few remnant trees of Eucalyptus radiata and introduced grasses
LABORATORY ANALYSES 997
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
L
3
11
46
19
16
4.9
87
0.004
A21
30-60
L
4
13
50
25
15
19
13
6
4.0
5.2
130
0.011
A22
75-90
L
3
13
51
20
16
19
13
6
5.0
5.9
250
0.031
B2
100-120
SiCL
2
10
44
14
29
33
15
18
11
6.4
380
0.053
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
4.5
0.28
21
28
140
0.014
0.041
0.9
1.3
0.4
0.4
27.3
3
5
1
1
90
A21
0.47
0.040
15
0.5
5
60
0.003
0.032
0.4
1.4
0.1
0.7
9.4
4
15
1
7
73
A22
75-90
0.8
0.4
2.5
0.03
1.2
7.5
5
33
<1
16
46
B2
100-120
0.5
0.9
7.5
0.1
3.5
14.0
6
54
1
25
14
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