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MM212

Site code

      MM212
Location
      Shelford (Rokewood Shelford Road), Shelford district, south-west Victoria
Landform
      Lava plain
Geology
      Quaternary Newer Volcanics: extrusive tholeiitic to alkaline basalts, minor scoria and ash
Element
      Crest

Profile morphology
Horizon

Depth (cm)

Description

A1
0–5
Very dark greyish brown (10YR3/2); clay loam; apedal massive structure; strong consistence (dry); common fine segregations; sharp boundary to:

B21
5–45
Very dark greyish brown (10YR3/2) with brown (10YR4/6) mottles; heavy clay; strong coarse blocky structure; very firm consistence (moderately moist); clear boundary to:

B22
45–70
Dark greyish brown (10YR4/2); medium clay; strong medium blocky structure; firm consistence (moderately moist); boundary to:

B23
70+
Greyish brown (10YR5/2); medium clay; moderate medium blocky structure; firm consistence (moderately moist); common calcareous ferruginous segregations.

ASC: Vertic, Subnatric, Black Sodosol

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

Site MM212
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
0–5
6.3
N/R
0.14
N/R
N/R
N/R
N/R
N/R
N/R
N/R
B21
5–45
7
N/R
0.12
N/R
6.9
11
0.64
2.8
N/R
6.8
B22
45–70
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R
B23
70+
8.7
N/R
0.77
0.14
N/R
N/R
N/R
N/R
N/R
N/R

Site MM212
Sample
depth
FC
(-10kPa)
PWP
(-1500kPa)
KS
FS
Z
C
Org C
Bulk density
Horizon
cm
%
%
%
%
%
%
%
t m-3
A1
0–5
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R
B21
5–45
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R
B22
45–70
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R
B23
70+
N/R
N/R
N/R
N/R
N/R
N/R
N/R
N/R

Management considerations
This soil exhibits a strong texture contrast between the surface soil and the subsoil and may have an impact upon the permeability. The surface soils are hardsetting and shallow having a reduced water holding capacity and are more susceptible to waterlogging, water and wind erosion. The subsoil is medium to heavy clay and acts as a barrier to water movement. Mottles and ferruginous nodules at depth indicate periods of waterlogging. Soil salinity also increases with depth and will limit plant root penetration to that depth.

Improved drainage and the application of gypsum to improve structure and permeability may reduce the incidence of waterlogging while increasing organic matter and maintaining vegetative cover is also important.
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