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WIA14

WLRA - soil pit WIA14- landscape
Cereal crop on plain

    Site Code
WIA14
WLRA - soil pit WIA14- profile
Calcic, Mottled-Mesonatric, Red Sodosol

    Location

Corkers Creek Rd, Longerenong, Western Victoria

    Landform

Anastomotic plain

    Geology

Quaternary Coonambidgal Formation:
fluvial to lacustrine clays and sands

    Element

Plain
Horizon
Depth (cm)
Description

A1

0–5
Dark brown (7.5YR3/4); fine sandy clay loam; plastic; hardsetting surface condition; weak coarse angular blocky structure; strong consistence dry, moderately sticky consistence wet; pH 7.8; sharp and wavy change to:


A2

5–10
Brown (7.5YR4/3) sporadically bleached (10YR7/1); fine sandy clay loam; weak coarse blocky structure; pH 8.1; sharp and wavy change to:


B21

10–25
Reddish brown (5YR4/4); light clay; plastic; moderate coarse prismatic structure; strong consistence dry, moderately sticky consistence wet; pH 8.7; sharp and wavy change to:


B22

25–45
Yellowish red (5YR4/6); light clay; plastic; moderate coarse prismatic structure; strong consistence dry, moderately sticky consistence wet; pH 9.3; clear and wavy change to:


B231k

45–90
Strong brown (7.5YR5/6) with faint yellowish red (5YR4/6) fine mottles; medium clay; plastic; weak blocky structure; strong consistence dry, moderately sticky consistence wet; contains very few (< 2 %) hard carbonates and a few (2-10%) soft carbonates; pH 9.3:


B232k

90–130+
Strong brown (7.5YR5/6) with faint yellowish red (5YR4/6) fine mottles; medium clay; plastic; weak blocky structure; strong consistence dry, moderately sticky consistence wet; contains very few (< 2 %) hard carbonates and a few (2-10%) soft carbonates; pH 9.3.
Management considerations
  • Strong texture contrast (20% to 56% clay)
  • Alkaline soil, slightly decreasing at depth, high level of nutrients in upper subsoil (B22 horizon)
  • Thin surface and subsurface horizon with, poor structure and high fine sand component
  • Subsurface soil is leached with fewer nutrients than above or below
  • Subsoil is sodic, becoming strongly sodic with depth and high salinity values below 45cm
  • Subsoil is mottled indicating some restricted drainage
  • Landform element, plain; slow site drainage, unless near drainage line

Site
WIA14
Sample depth cm
pH
EC
dS/m
NaCl
%
Ex Ca
cmol-/kg
Ex Mg
cmol-/kg
Ex K
cmol-/kg
Ex Na
cmol-/kg
Ex Al
mg/kg
Ex acidity
cmol-/kg
FC
-30okPa
PWP
-1500okPa
KS
%
FS
%
Z
%
C
%
Horizon
H2O
CaCl2
A1
0–5
7.8
NA
0.11
0.01
7
3.8
0.7
0.6
NA
2.7
19.6
8.4
20
45
8
24
A2
5–10
8.1
NA
0.07
0.01
4.7
3.4
0.4
0.9
NA
2
NA
6.7
22
48
9
20
B21
10–25
8.7
NA
0.18
0.03
10
12.5
1.6
3.9
NA
1.3
NA
23.3
12
24
5
56
B22
25–45
9.3
NA
0.48
0.06
9.4
17.1
1.6
6.8
NA
NA
NA
26.7
6
17
4
69
B31k
45–90
9.3
NA
1.03
0.13
6
13.3
1.5
8
NA
NA
NA
23.3
9
20
5
55
B32k
90–130
9.3
NA
1.17
0.18
5.2
12.6
1.4
7.8
NA
NA
NA
20.1
13
22
7
47
B233
130–190
9.2
NA
1.11
0.16
NA
NA
NA
NA
NA
NA
NA
20.3
12
22
9
53
B234
190–230
8.6
NA
1.05
0.17
NA
NA
NA
NA
NA
NA
NA
21.1
11
26
7
54
Note: NA=not assessed
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