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WLRA147

WLRA - soil pit WLRA147- landscape
Rise looking north towards Greens Creek

WLRA - soil pit WLRA147- profile
Eutrophic, Mottled-Mesonatric, Brown SODOSOL

    Location

Potters Road, Joel, western Victoria

    Landform

Gently undulating rise

    Geology

Pliocene Parilla Sand: marine sand and silt

    Element

Rise crest

    Slope

1%

    Aspect

East

Horizon
Depth (cm)
Description

A1

0–10

Brown (7.5YR4/3); sandy loam; massive (structureless); very weak dry consistence; very few fine subrounded quartz gravels; very few fine ferromanganiferous nodules; common fine to very fine roots; pH 5.2; clear and smooth boundary to:

A2

10–30

Yellowish brown (10YR5/4), conspicuously bleached very pale brown (10YR8/2 dry); sandy loam; massive (structureless); weak dry consistence; a few fine to very fine subrounded quartz gravels; few medium ferromanganiferous nodules; a few fine to very fine roots; pH 5.4; abrupt and irregular boundary to:

B21

30–50

Yellowish brown (10YR5/4) with common medium distinct yellowish red (5YR4/6) mottles; medium heavy clay; strong fine prismatic, parting to moderate fine subangular blocky structure; smooth ped-fabric; strong moderately moist consistence; common fine to very fine roots; pH 8.2; clear and tongued boundary to:

B22

50–80

Strong brown (7.5YR5/6); medium heavy clay; moderate fine to very fine prismatic, parting to weak fine to very fine subangular blocky structure; rough ped-fabric; strong moderately moist consistence; few fine to medium manganiferous nodules; few faint slickensides; few fine to very fine roots; pH 8.7; gradual and smooth boundary to:

B23

80–110+

Reddish yellow (7.5YR6/8) with many medium distinct yellowish red (5YR4/6) mottles; medium heavy clay; massive (structureless); strong moderately moist consistence; few fine to medium manganiferous nodules; pH 8.5.

Management Considerations

  • Strong texture contrast profile, highly sodic subsoil.
  • Subsurface horizon is leached (bleached). Fewer nutrients available.
  • Highly acidic surface and subsurface soil and alkaline subsoil.
  • Note high fine sand content throughout.
  • Less clay with deeper subsoil (undetected by hand texture) and higher proportion of magnesium to calcium at depth.
  • Subsoil is very highly dispersive. Limited (preferably no) exposure required to remain stable. Slightly higher salinity with depth.
  • Surface soil is only slightly dispersive.
  • Landscape position, gentle crest. Water shedding.

Horizon
Depth (cm)
pH (water)
pH (CaCl2)
EC
dS/m
NaCl
%
Exchangeable Cations
cmol-/kg
Field Capacity
(pF2.5)
Wilting Point
(pF4.2)
Coarse Sand
%
Fine Sand
%
Silt
%
Clay
%
Ca
Mg
K
Na
A1
0–10
5.2
4.5
0.11
2.5
0.41
0.29
0.33
16.8
4.1
36.4
40.6
6
12
A2
10–30
5.4
4.8
<0.05
1.5
0.3
0.08
0.07
12.6
2.3
38
43.2
2.5
13.5
B21
30–50
8.2
7.2
0.24
7.6
9.4
0.44
5.3
41
22.1
8.7
24.3
6
57.5
B22
50–80
8.7
7.9
0.31
6
9.5
0.4
4.9
B23
80–110+
8.5
7.6
0.31
0.03
3.4
8.7
0.3
5.6
31.1
13.5
17.8
39.7
8
32
CC BY 4.0 AU

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