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WIA15

WLRA - soil pit WIA15- landscape
Cereal crop on plain
    Site Code
 WIA15
WLRA - soil pit WIA15- profile
Calcic, Mottled-Mesonatric, Red Sodosol

    Location

Corkers Creek Rd, Longerenong, western Victoria

    Landform

Anastomotic plain

    Geology

Quaternary Shepparton Formation: fluvial silt, sand and minor gravel

    Element

Terrace flat
Horizon
Depth (cm)
Description

A1

0–5

Brown (7.5YR4/4); fine sandy loam; plastic; hard setting surface condition; weak coarse granular structure; weak consistence dry; pH 6.2; sharp and wavy boundary to:

A2e

5–10

Brown (7.5YR4/4) conspicuously bleached (7.5YR7/2d); fine sandy loam; weak coarse granular structure; weak consistence dry; pH 8.2; sharp and wavy boundary to:

A3e

10–15

Conspicuously bleached (7.5YR7/2d); sandy loam; massive (structureless) with cemented capping; weak consistence dry; pH 8.2; sharp and wavy boundary to:

B21

15–50

Yellowish red (5YR5/6) with (2.5YR4/4) mottles; medium clay; plastic; moderate very coarse columnar structure; strong consistence dry; sticky consistence wet; pH 9.3:

B22

50–90

Yellowish red (5YR5/6) with (2.5YR4/4) mottles; medium clay; plastic; moderate very coarse columnar structure; strong consistence dry; sticky consistence wet; pH 9.8; clear and wavy boundary to:

B31k

90–140

Yellowish brown (10YR5/4); sandy clay loam; plastic; weak coarse subangular blocky structure; strong consistence dry; moderately sticky consistence wet; few (2-10%) soft carbonate segregations in bands; pH 9.8.
Management considerations
  • Texture contrast profile with clay dominant in upper subsoil
  • 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 slight h salinity values in subsoil
  • Subsoil is mottled indicating some restricted drainage
  • Landform element, plain; slow site drainage, unless near drainage line
Site
WIA15
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
6.2
NA
0.09
0.01
1.7
0.6
0.7
0.1
NA
3
NA
3.6
7
68
15
8
A2e
5–10
6.2
5
0.06
0.01
2.8
0.9
0.4
0.1
NA
2.1
15.1
2.7
8
69
15
8
A3e
10–15
8.2
NA
0.09
0.02
1.9
2.1
0.4
0.8
NA
0.9
NA
5.2
6
61
18
15
B21
15–50
9.3
NA
0.39
0.04
4.3
8.3
1.4
4.2
NA
NA
NA
17.1
3
37
16
44
B22
50–90
9.8
NA
0.57
0.06
1.4
5.3
0.7
4.5
NA
NA
30.4
10.9
1
51
22
26
B31k
90–140
9.8
NA
0.36
0.04
1
3.6
0.4
3
NA
NA
NA
20
1
69
14
16
B32
140–195
9.8
NA
0.32
0.03
NA
NA
NA
NA
NA
NA
NA
8.7
1
61
19
19
B33
195–230
8.9
NA
0.23
0.04
NA
NA
NA
NA
NA
NA
NA
NA
15
40
18
27
Note: NA=not assessed
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