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MP35

Location: Nullawil.Australian Soil Classification: Epibasic (and Endohypersodic), Pedal, Calcic CALCAROSOL
Geology: Quaternary (Woorinen Formation) alluvial and aeolian deposits. General Landscape Description: Level plain.
Site Description: Roadside verge.


Photo: MP 35 landscape
MP35 Landscape


Soil Profile Morphology:

Surface Soil
A10-10 cmBrown (7.5YR4/4); heavy clay loam; hardsetting surface condition; moderate medium subangular blocky structure; rough fabric; firm consistence dry; pH 7.8; abrupt change to:
Photo: MP 35 profile
MP35 Profile
Subsoil

B110-20 cmDark brown (7.5YR3/4); light clay; moderate coarse sub-angular blocky, parting to medium sub-angular blocky structure; rough fabric; very firm consistence dry; very slightly calcareous; pH 8.5; abrupt change to:

B2120-35 cmDark reddish brown (5YR3/4); light medium clay; strong medium sub-angular blocky, parting to fine angular blocky structure; smooth fabric; very firm consistence slightly moist (sub-plastic); very slightly calcareous; pH 8.9; clear and wavy change to:
NOTE: roots stop above carbonate.

B22k35-70 cmYellowish red (5YR5/6); medium clay; weak to moderate coarse polyhedral structure; very firm consistence slightly moist; fine-earth carbonates common (20%) in patches; very strongly calcareous; pH 9.2.

Key Profile Features:

Soil Profile Characteristics:

Horizon
Horizon Depth
(cm)
pH
(water)
pH (CaC2)
EC
1:5
NaCI
%
Exchangeable Cations
Field
Capacity
pF 2.5
Coarse Sand (0.2 - 2.0 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 *
0-10
8
7.5
0.21
A1
0-10
7.8
7.3
0.17
16
4.2
2.4
0.3
16
11
33
13
42
A2
10-20
8.5
7.7
0.15
16
4.3
1.4
1.1
14
10
37
15
43
B21
20-35
8.9
8.1
0.56
0.1
21
13
1.6
7.1
29
5
19
8
72
B22
35-70
9.2
8.4
1.2
0.24
9.7
13
1.1
27
24
5
18
9
56

* Paddock sample
Photo: MP 35 pH
Photo: MP 35 salinity
The soil profile becomes increasingly alkaline with depth.
The salinity rating is low-medium in the upper subsoil. It becomes high in the deeper subsoil from 35 cm depth.



Photo: MP 35 sodicity



Photo: MP 35 clay

The surface soil is non-sodic.
The subsoil is strongly sodic.

The soil profile is clayey throughout.


Profile Described By: Mark Imhof and Nathalie Baxter (August, 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).

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