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WW357

Location: Dimboola East

Australian Soil Classification: Sodic, Calcic, Black CHROMOSOL


General Landscape Description: Hill crest of a rise.
Site Description: Fallow, cropping.
Native Vegetation: Savannah Woodland.
Geology: Neogene (Tertiary).


Soil Profile Morphology:

Surface Soil

A10-15 cm Dark brown (5YR4/2); fine sandy clay loam; weak medium blocky; pH 8.2; sharp change to:


Subsoil

B2115-50 cmVery dark brown (10YR2/2); heavy clay; weak coarse blocky structure; pH 8.0; gradual change to:

B2250-85 cmVery dark brown (10YR2/2); heavy clay; weak coarse blocky structure; pH 8.2; gradual change to:

B385-120 cmVery dark greyish brown (10YR3/2); sandy clay; weak blocky structure; contains very few fine carbonate nodules; highly calcareous; pH 9.1.

Soil Profile Characteristics:


pH
Salinity Rating
Surface
(A1 horizon)
Moderately Alkaline
Medium
Non-Sodic
Subsoil
(B21 horizon)
Moderately Alkaline
Low
Non-Sodic
Deeper Subsoil
(at 85-120 cm)
Very Strongly Alkaline
Medium
Strongly Sodic



Image: WW357  graphs
The surface and upper subsoil are moderately alkaline. The deeper subsoil is very strongly alkaline.The salinity rating in the surface is medium, low in the upper subsoil and medium in the deeper subsoil.The surface and upper subsoil are non-sodic. The deeper subsoil is strongly sodic.

Chemical and Physical Analysis:


Horizon
Horizon
Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
dS/m
NaCl
%



Exchangeable Cations
Ca
Mg
K
Na
Meq/100g
A1
0-15
8.2
7.8
0.2
0.014
22
3.4
2.5
0.43
B21
15-50
8.0
7.6
0.37
0.02
19
4.4
1.4
1.3
B22
50-85
8.2
7.7
0.39
0.024
20
6.3
1.4
2.6
B3
85-120
9.1
8.4
0.46
0.054
15
6.4
1
4.6


Profile Described By: N.S. Badawy (March 1970).
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