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MM239

Site code

      MM239
Location
      Mingay (Hannahs Road), Lismore district, south-west Victoria
Landform
      Gently undulating basalt plains
Geology
      Quaternary Newer Volcanics: extrusive tholeiitic to alkaline basalts, minor scoria and ash
Element
      Flat

Profile morphology
Horizon

Depth (cm)

Description

A1
0–15
Dark brown (10YR3/3); clay loam; apedal massive structure; firm consistence (dry); common fine segregations; clear boundary to:

A2
15–50
Dark greyish brown (10YR4/2), sporadically bleached, light grey (10YR7/2 dry); clay loam; weak consistence (moist); sharp boundary to:

B21
50–100
Grey (10YR5/1) with brown (10YR4/6) mottles; medium clay; strong coarse blocky structure; very firm consistence (moist); gradual boundary to:

B22
100–120
Grey (10YR6/1) with brown (10YR5/6) mottles; medium clay; very firm consistence (moist); gradual boundary to:

B23
120+
Light olive brown (2.5Y5/4); medium clay.

ASC: Eutrophic, Mottled-Mesonatric, Grey Sodosol

Analytical data Source: Government of Victoria, State Chemistry Laboratory.

Site MM239
Sample
depth
pH
EC
NaCl
Ex Ca
Ex Mg
Ex K
Ex Na
Ex Al
Ex acidity
Horizon
cm
H2O
CaCl2
dS/m
%
cmolc/kg
cmolc/kg
cmolc/kg
cmolc/kg
mg/kg
cmolc/kg
A1
0–15
5.3
N/R
0.09
N/R
2
2
0.3
0.5
50
14.8
A2
15–50
6.2
N/R
0.05
N/R
1.4
1.4
0.1
0.5
0
4.6
B21
50–100
6.6
N/R
0.2
0.04
5
5
0.5
4.8
N/R
11.6
B22
100–120
7.6
N/R
0.14
N/R
N/R
N/R
N/R
N/R
N/R
7
B23
120+
8.2
N/R
0.43
0.08
7.5
7.5
0.7
7.8
N/R
N/R

Site MM239
Sample
depth
FC
(-10kPa)
PWP
(-1500kPa)
KS
FS
Z
C
Org C
Bulk density
Horizon
cm
%
%
%
%
%
%
%
t m-3
A1
0–15
22.4
13.4
9
40
22
21
3.9
1.28
A2
15–50
22.9
6.8
10
44
28
16
N/R
N/R
B21
50–100
50.1
30.2
2
18
13
66
N/R
1.47
B22
100–120
N/R
N/R
3
18
8
66
N/R
N/R
B23
120+
N/R
N/R
2
9
13
75
N/R
N/R

Management considerations
This soil exhibits hardsetting surface soils with a strong texture contrast between the surface soil and the subsoil which may impact upon subsoil permeability. Conspicuously bleached A2 horizons and sodic and mottled subsoils are other prominent features of this soil type.

The application of gypsum would be suitable for soil structure and improved permeability, while increasing organic matter and maintaining vegetative cover is important to help improve the soil structure. Penetration by deep-rooted crops is also useful as is minimum tillage practices which avoids bringing the sodic material to the surface.
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