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WW267

Location: Murra Warra

Australian Soil Classification: Epicalcareous-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

A10-20 cm Very dark greyish brown (10YR3/2); light clay; weak medium blocky structure; weak consistence moist; contains very few fine carbonate nodules; highly calcareous; pH 8.2; gradual change to:

Subsoil

B2120-40 cmVery dark greyish brown (10YR3/2); medium heavy clay; weak medium blocky structure; contains very few fine carbonate nodules; very highly calcareous; pH 8.4; sharp change to:

B2240-70 cmDark brown (7.5YR3/2); medium heavy clay; weak fine blocky structure; contains a few fine carbonate nodules; very highly calcareous; pH 8.6; sharp change to:

B3k70-120 cmLight yellowish brown (10YR6/4); medium clay; weak very fine blocky structure; contains very many carbonate nodules; very highly calcareous; pH 9.4.



Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Moderately Alkaline
Low
Non-Sodic
Subsoil
(B21 horizon)
Moderately Alkaline
Low
Non-Sodic
Deeper Subsoil
(at 70-120 cm)
Very Strongly Alkaline
Moderate
Strongly Sodic


Image: WW267 graphs

The surface and upper subsoil are moderately alkaline. The deeper subsoil is very strongly alkaline.The surface and upper subsoil have a low salinity rating. The salinity rating for the deeper subsoil is moderate.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
0-20
8.2
7.8
0.1
0.009
32
4.4
2.7
0.34
B21
20-40
8.4
8.0
0.22
0.011
32
3.3
1.7
0.41
B22
40-70
8.6
8.0
0.23
0.012
29
4.3
1.4
0.77
B3k
70-120
9.4
8.4
0.6
0.08
6.8
7
1.5
5


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