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WIA12

    Site Code
WIA12
WLRA - soil pit WIA12- profile
Endocalcareous-Endohypersodic, Epipedal, Grey Vertosol

    Location

Corkers Creek, Longerenong, western Victoria

    Landform

Anastomotic plain

    Geology

Quaternary Shepparton Formation: fluvial silt, sand and minor gravel

    Element

Plain
Horizon
Depth (cm)
Description

A1

0–5

Dark grey (10YR4/1); light clay; subplastic; cracking and self-mulching surface condition; moderate coarse subangular blocky structure; very strong consistence dry; slightly sticky consistence wet; pH 7.2; sharp and wavy boundary to:

B21

5–25

Grey (5Y5/1); light clay; subplastic; moderate coarse prismatic structure; strong consistence dry; moderately sticky consistence wet; pH 8.9.

B22

25–60

Grey (5Y5/1); heavy clay; subplastic; moderate coarse prismatic structure; strong consistence dry; moderately sticky consistence wet; very few (<2%) hard and soft carbonate segregations; pH 9.2; sharp and wavy boundary to:

B23

60–110

Grey (5Y5/1); heavy clay; plastic; coarse lenticular structure (slickensides); strong consistence dry; moderately sticky consistence wet; very few (<2%) hard carbonate segregations; pH 9.3; gradual boundary to:

B31

110–150

Greyish brown (10Y5/2); heavy clay; plastic; coarse lenticular structure (slickensides); strong consistence dry; slightly sticky consistence wet; very few (<2%) hard carbonate segregations; pH 9.3; gradual boundary to:

B32

150–180

Brown (10Y5/3); heavy clay; plastic; coarse lenticular structure (slickensides); strong consistence dry; slightly sticky consistence wet; pH 9.1; gradual boundary to:

B33

180–215

Greyish brown (10Y5/2); heavy clay; plastic; coarse lenticular structure (slickensides); strong consistence dry; slightly sticky consistence wet; pH 8.9.
Management considerations
  • Cracking clay profile, very high clay percentage, decreasing below upper subsoil
  • Neutral thin surface soil and alkaline below
  • Friable self mulching surface, feels lighter than lab data suggests (subplastic), as does upper subsoil
  • Calcium percentage decreasing with depth
  • Yellow hue profile(5Y) and lighter coloured deep subsoil, poorer internal drainage
  • Subsoil is strongly sodic and salinity increases at depth, particularly below 50cm
  • Cracking may allow air and seasonal moisture to penetrate
  • Very strong consistence when dry, implications for compaction and implement use
  • Landform element, plain: poor site drainage
Site
WIA12
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
7.2
NA
0.11
0.02
9.9
8.7
2.5
0.7
NA
6.7
34.2
18.4
7
23
8
59
B21
5–25
8.9
NA
0.14
0.02
16.6
14.2
2
3.1
NA
3
42.3
25.7
3
7
6
83
B22
25–60
9.2
NA
0.24
0.02
13.4
17.3
2.1
5.6
NA
NA
NA
21.9
3
9
6
81
B23
60–110
9.3
NA
0.41
0.05
9.7
17
1.9
8.7
NA
NA
NA
26.7
4
11
8
76
B31
110–150
9.3
NA
0.64
0.11
6.6
14.5
1.7
10.4
NA
NA
NA
24.2
5
14
9
69
B32
150–180
9.1
NA
0.62
0.12
NA
NA
NA
NA
NA
NA
NA
25.2
4
15
10
70
B33
180–215
8.9
NA
0.67
0.11
NA
NA
NA
NA
NA
NA
NA
24.8
4
15
10
69
Note: NA=not assessed