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MM170

Site code
      MM170
Location
      Enfield (Singer Lane), Ballarat district, south-west Victoria
Landform
      Gently undulating sedimentary plains
Geology
Element
      Side slopes

Profile morphology
Horizon

Depth (cm)

Description

A1
0–20
Dark greyish brown (10YR4/2); fine sandy clay loam; apedal massive structure; weak consistence (dry); clear boundary to:

A2
20–60
Brownish yellow (10YR6/6), very pale brown (10YR7/3 dry) conspicuously bleached; fine sandy clay loam; apedal massive structure; firm consistence (dry); sharp boundary to:

B21
60+
Yellowish brown (10YR5/4 moist) with red (2.5YR4/6) mottles; medium clay; moderate fine blocky structure; firm consistence (moderately moist).


ASC: Magnesic, Mottled-Mesonatric, Brown Sodosol

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

Site MM170
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
0–20
5.7
N/R
0.03
N/R
1.1
1.1
0
0.2
N/R
4.1
A2
20–60
5.8
N/R
0.03
N/R
0.9
0.9
0
0.3
N/R
3.2
B21
60+
5.8
N/R
0.04
N/R
0.2
0.2
0.2
0.7
N/R
0.8

Site MM170
Sample
depth
FC
(-10kPa)
PWP
(-1500kPa)
KS
FS
Z
C
Org C
Bulk density
Horizon
cm
%
%
%
%
%
%
%
t m-3
A1
0–20
24.1
10.2
17
47
24
11
2.1
1.09
A2
20–60
N/R
N/R
13
40
20
27
0.5
N/R
B21
60+
36.8
23.7
7
18
10
64
N/R
1.29

Management considerations
These soils have hardsetting topsoils and exhibit a strong texture contrast between the surface soil and the subsoil with a bleached A2 horizon. The bleached A2 horizon is an indication of restricted drainage, poor soil structure (often massive) and low organic matter and nutrients.

Sodic and mottled subsoils are other key features of this soil and are an indication of periodic waterlogging.

Improvement of soil structure through increased organic matter would be useful while management options include reduced tillage, improving organic matter content and altering the subsoil through artificial drainage (ripping, mole drainage) and/or chemical amelioration (gypsum) to improve structure.
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