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MP41

Location: Nullawil.Australian Soil Classification: Bleached-Sodic, Calcic, Grey, DERMOSOL (clayey surface).
Geology: Quaternary alluvial & aeolian sediments.General Landscape Description: Level plain (floodplain of Tyrell Creek).
Site Description: Cropping paddock.

Photo: MP 41 landscape
Site MP41 Landscape


Soil Profile Morphology:

Surface Soil
Ap0-8 cmVery dark greyish brown (10YR3/2); light clay; soft surface condition; weak consistence (dry); pH 7.4:

Photo: MP 41 profile
Site MP41 Profile
A128-10 cmBrown (10YR5/3) conspicuously bleached (10YR7/1 dry); heavy sandy clay loam; firm consistence (dry); pH 8.1:

Subsoil

B2110-30 cmLight brownish grey (10YR6/2) with few (5%) faint brownish yellow (10YR6/6) mottles; medium clay; moderate coarse prismatic, parting to strong coarse to medium blocky structure; strong consistence (dry); pH 8.3:

B2230-50 cmGreyish brown (10YR5/2); medium heavy clay; strong coarse to medium blocky structure; strong consistence (dry); few (5%) medium (3-10 mm) calcareous nodules; pH 9.4:

B23k50-80 cmReddish yellow (7.5YR7/6); medium heavy clay; fine-earth carbonates and calcareous nodules common (15%); pH 9.8:

B24k80-100 cmReddish yellow (7.5YR7/6); medium clay; fine-earth carbonates common (15%); pH 9.8:

B25100-140 cmReddish yellow (7.5YR7/6); medium clay; very few (2%) manganese stains; pH 9.8.

Key Profile Features:
Soil Profile Characteristics:
pH
Salinity Rating
Surface
(Ap horizon)
Slightly Alkaline
Low
Non-Sodic
None1
Subsoil
(B21 horizon)
Strongly Alkaline
Low
Sodic
Moderate
Deeper subsoil
(at 100-140 cm)
Very Strongly Alkaline
Very High
Strongly Sodic
strong
1 Moderate-strong dispersion after remoulding.

Photo: MP 41 graphs
Horizon
Horizon Depth
(cm)
pH
(water)
pH (CaCl2)
EC
1:5
NaCI
%
Exchangeable Cations
Boron
(CaCl2)
mg/kg
Field
Capacity
pF2.5
Wilting Point
pF4.2
Coarse Sand
(0.2 - 2 mm)
Fine Sand
(0.02 - 0.2 mm)
Silt
(0.002 - 0.02 mm)
Clay
(<0.002 mm)
Ca
Mg
K
Na
meq/100g
Ap
0-8
7.4
6.9
0.24
12
5.3
1.6
0.85
2.3
24
13
25
28
9
32
A2
8-10
8.1
7.2
0.13
9.2
4.3
0.68
0.92
1.7
22
11
28
27
11
32
B21
10-30
8.3
7.4
0.16
13
7
0.98
1.7
2.5
31
16
22
20
9
46
B22
30-50
9.4
8.4
0.25
18
8.7
1.1
3.3
5.6
39
18
23
19
7
46
B23k
50-80
9.8
9.5
0.44
<0.01
6.4
11
1.4
7.7
47
20
B24k
80-100
9.8
9.4
0.52
0.01
5.4
11
1.4
9.0
B25
100-140
9.8
9.5
0.62
0.03

Profile Described By: Mark Imhof, April 2004.
CC BY 4.0 AU

This page contains material sourced from the Victorian Resources Online (VRO) website, originally published by the State Government of Victoria.

The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

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