Victorian Resources Online (archived)
Archived content — This page contains material from the Victorian Resources Online (VRO) website. It is no longer maintained and is provided for reference only. This content is hosted by CeRDI and is not endorsed by Agriculture Victoria.

Sitemap

MP38b

Location: Walpeup

Australian Soil Classification: Sodic, Hypercalcic, Red CHROMOSOL (medium sandy surface)

General Landscape Description: Swale between east-west dune.
Geology: Quaternary (Woorinen Formation) deposits.
Land Use: Cropping.

MP38 and MP39 landscape
MP38 and MP39 landscape


Soil Profile Morphology:

Surface Soil
A10-20 cmStrong brown (7.5YR4/6); loamy sand; very weak consistence dry; non calcareous; pH 7.9:
MP38b profile
MP38b profile
Subsoil
B120-25 cmDark brown (7.5YR3/4); sandy clay loam; weak coarse blocky structure; weak consistence moist; non calcareous; pH 8.1:
B2125-35 cmYellowish red (5YR5/6) with some yellowish red (5YR4/6); medium clay (sandy); weak coarse blocky structure; weak consistence moist; moderately calcareous; pH 8.6:
B22k35-50 cmReddish yellow (5YR6/8); light medium clay; weak consistence moist; contains a common (20%) amount of soft and hard carbonate; very strongly calcareous; pH 8.9:
B23k50-100 cmYellowish red (5YR5/8); light clay becoming clay loam with depth; weak polyhedral structure; firm consistence moist; contains a few (2-5%) hard carbonates (5-10 mm in size) and very many (>50%) soft carbonates; very strongly calcareous; pH 9.6:

Key Profile Features:

Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Slightly Alkaline
Very Low
--
__
Subsoil
(B21 horizon)
Strongly Alkaline
Very Low
Non Sodic
None1
Deeper Subsoil
(at 50 cm)
Extremely Alkaline
Low
Strongly Sodic
--
1 Moderate dispersion after remoulding.

Image: MP38 graphs
The soil profile becomes increasingly alkaline with depth.The level of soluble salts is low throughout the profile.The upper soil profile is non-sodic becoming strongly sodic with depth.There is a moderate increase in clay content at the A/B horizon boundary.

Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
1:5
NaCI
%
Exchangeable Cations
Total Nitrogen
%
Organic Carbon
%
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
A1
0-20
7.9
7.3
0.05
2.9
1
0.6
0.1
0.06
0.29
2.6
33
59
0
8
B1
20-25
8.1
7.4
0.07
8.6
2.6
1.5
0.1
6.7
36
38
3
23
B21
25-35
8.6
8
0.13
11
4
1.4
0.2
9.9
38
34
3
26
B22k
35-50
8.9
8.2
0.14
10
7
1.1
0.3
14.8
29
24
4
36
B23k
50-100
9.6
8.6
0.32
<0.05
5.5
10
1.1
3.4
14.9
30
19
2
35

Profile Described By: Mark Imhof and Nathalie Baxter (September 1996).
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).

This material is presented in an archived form and is no longer maintained or updated. It is provided for general information only and should not be relied upon as current advice.

This site is hosted by the Centre for eResearch and Digital Innovation (CeRDI), Federation University Australia. It is not endorsed by Agriculture Victoria.

Agriculture Victoria does not accept liability for any loss, damage or consequences arising from the use of, or reliance on, this material.