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WW244

Location: Dimboola East

Australian Soil Classification: Endohypersodic, Self-Mulching, Black VERTOSOL

General Landscape Description: Level plain with subdued ridges.
Site Description: Cropping stubble.
Geology: Neogene (Tertiary).
Native Vegetation: Savannah Woodland.


Soil Profile Morphology:

Surface Soil

Ap0-20 cmVery dark greyish brown (10YR3/2); light clay; weak fine blocky structure; weak consistence moist; pH 8.2; sharp change to:


Subsoil

B2120-55 cmVery dark grey (10YR3/1); light clay; weak medium blocky structure; pH 8.0; sharp change to:

B3155-85 cmDark brown (10YR3/3); medium clay; weak coarse blocky structure; pH 8.2; sharp change to:

B3285-120 cmDark yellowish brown (10YR4/4); medium clay; weak fine blocky structure; contains very few carbonate nodules; pH 8.7.



Soil Profile Characteristics:

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


Image: WW244  graphs

The surface and upper subsoil are moderately alkaline. The deeper subsoil is strongly alkaline.The salinity rating in the surface and upper subsoil is low to medium. The deeper subsoil has a medium to high salinity rating.The surface is non-sodic. The upper subsoil is sodic and 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
0-20
8.2
7.8
0.22
0.014
22
4
1.8
0.5
B21
20-55
8.0
7.5
0.28
0.016
18
5.2
1.6
1.8
B31
55-85
8.2
7.5
0.4
0.033
16
9.9
2.1
4.3
B32
85-120
8.7
8.1
0.72
0.097
15
14
2.6
7.1


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