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Site IS25

Location: Haven

Australian Soil Classification: Calcic, Subnatric, Grey SODOSOL

General Landscape Description: Swale within a Dunefield
Geology: Quaternary Shepparton Formation: fluvial silt, sand and minor gravel


Image: IS25 Landscape
IS25 Landscape


Soil Profile Morphology:

Surface Soil

A110-10Dark grey (10YR4/1) light clay; subplastic; cracking and self-mulching surface condition; weak coarse subangular blocky structure; very strong consistence dry; slightly sticky consistence wet; pH 6.6:

A1210-20Dark grey (10YR4/1) medium clay; subplastic; cracking and self-mulching condition; weak coarse subangular blocky structure; very strong consistence dry; slightly sticky consistence wet; pH 7.7; sharp boundary to:

Subsoil

B2120-35Light brownish grey (2.5Y6/3); light medium clay; subplastic; moderate coarse blocky structure; very strong consistence dry; slightly sticky consistence wet; pH 8.1:

B2235-90Pale olive (5Y6/3); medium heavy clay; very plastic; moderate coarse subangular blocky structure; very strong consistence dry; slightly sticky consistence wet; pH 9.1:

B2390-135Pale olive (5Y6/3); medium heavy clay; very plastic; strong coarse subangular blocky structure; strong consistence dry; slightly sticky consistence wet; very few (<2%) soft carbonate segregations; pH 9.4:

B24135-160Pale olive (5Y6/3); medium heavy clay; very plastic; strong coarse subangular blocky structure; strong consistence dry; slightly sticky consistence wet; pH 9.1; gradual boundary to:

B31160-200Pale yellow (5Y7/4); heavy clay; very plastic; strong coarse subangular blocky structure; strong consistence dry; slightly sticky consistence wet; pH 8.9:

B32200-220Pale yellow (5Y7/4); heavy clay; very plastic; strong coarse subangular blocky structure; strong consistence dry; slightly sticky consistence wet; pH 7.7.

Soil Profile Characteristics:


Horizon
Sample Depth cm
pH
EC
dS/m
Sodium Chloride
%
Exchangeable Calcium
cmol-/kg
Exchangeable
Magnesium
cmol-/kg
Exchangeable Potassium
cmol-/kg
Exchangeable Sodium
cmol-/kg
Exchangeable Aluminium
mg/kg
Exchangeable Acidity
cmol-/kg
Field
Capacity
-30okPa
Permanent
Wilting
Point
-1500okPa
Coarse
Sand
%
Fine
Sand
%
Silt
%
Clay
%
H2O
CaCl2
A11
0–10
6.6
NA
0.17
0.02
8.6
4.7
2.1
0.2
NA
5
NA
13.5
16
39
10
34
A12
10–20
7.7
NA
0.12
0.01
8.9
6.3
1.5
0.5
NA
3.7
NA
15.1
15
36
11
39
B21
20–35
8.1
NA
0.14
0.02
7.1
6.6
1
1.9
NA
3.1
NA
15.3
14
39
11
35
B22
35–90
9.1
NA
0.33
0.04
5.5
9
1.4
5
NA
NA
NA
20.6
13
33
12
42
B23
90–135
9.4
NA
0.94
0.12
5.4
10.6
1.4
8.8
NA
NA
NA
20.3
11
23
11
47
B24
135–160
9.1
NA
1.11
0.25
NA
NA
NA
NA
NA
NA
NA
19.2
15
26
10
47
B31
160–200
8.9
NA
1.21
0.2
NA
NA
NA
NA
NA
NA
NA
19.7
11
28
11
47
B32
200–220
7.7
NA
1.28
0.21
NA
NA
NA
NA
NA
NA
NA
20.6
12
27
9
50
Note: NA=not assessed.

Management Considerations:
  • Gradational profile, medium to heavy texture range with vertic properties.
  • Neutral upper soil over alkaline and sodic subsoil. Slight decrease at depth.
  • Upper soil (A horizons) indicate some organic matter content.
  • Sodicity increases below upper subsoil (below 35 cm).
  • Subsoil has yellow hue (5Y) and pale colours indicating reducing conditions, limited drainage and air movement.
  • Landscape element, swale; very slow site drainage.

Profile Described By: John Martin, Nabil Badawy, Ron Cawood, Geoff Pope, John Galea, John Turner (1970).
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