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WIA17

WLRA - soil pit WIA17- landscape
Cultivated prior stream floodplain
    Site Code
 WIA17
WLRA - soil pit WIA17- profile
Endohypersodic, Epipedal, Grey Vertosol

    Location

Riverside, Horsham, western Victoria

    Landform

Floodplain (prior stream)

    Geology

Quaternary Shepparton Formation: fluvial silt, sand and minor gravel

    Element

Flat

    Slope

0%

    Aspect

–
Horizon
Depth (cm)
Description

A1

0–10

Dark grey (10YR4/1); light clay; subplastic; cracking and slightly self-mulching surface condition; moderate subangular blocky structure; strong consistence dry; slightly sticky consistence wet; very few (<2%) soft carbonates; pH 7.3; sharp and smooth boundary to:

B21

10–55

Dark grey (10YR4/1); light clay; subplastic; moderate very coarse prismatic structure; strong consistence dry; moderately sticky consistence wet; pH 7.6; gradual boundary to:

B22

55–115

Grey (2.5Y5/1); medium clay; plastic; weak subangular blocky structure; strong consistence dry; moderately sticky consistence wet; pH 7.6; gradual boundary to:

B23

115–180

Light grey (2.5Y7/2); medium clay; plastic; weak subangular blocky structure; strong consistence dry; moderately sticky consistence wet; pH 8.5.
Management considerations
  • Cracking clay profile, high clay percentage
  • Neutral thin surface soil and subsoil, alkaline at depth
  • Structured surface, occasional self mulching feels lighter than lab data suggests (subplastic)
  • Calcium percentage decreasing with depth
  • Lighter coloured deep subsoil, poorer internal drainage
  • Subsoil is strongly sodic and salinity very high , particularly below 55cm
  • Cracking may allow air and seasonal moisture to penetrate
  • Very strong consistence when dry, implications for compaction and implement use
  • Landform element, flat: poor site drainage
Site
WIA17
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
0–10
7.3
NA
0.19
0.04
13.2
8.4
1.9
0.9
NA
5.2
31.4
16.6
10
26
14
50
B21
10–55
7.6
NA
1.11
0.2
12.1
13.9
1.6
4.2
NA
4.9
NA
25.1
5
14
15
64
B22
55–115
7.6
NA
3.06
0.7
11.4
17.4
1.7
6.4
NA
3
NA
28.1
3
10
14
71
B23
115–180
8.5
NA
1.72
0.39
10.3
16.1
1.8
8.2
NA
1.8
NA
32.1
4
15
10
67
Note: NA=not assessed
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