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WLRA127

WLRA - soil pit WLRA127- landscape
Cropped undulating plains

    Site Code
WLRA127
WLRA - soil pit WLRA127- profile
Epihypersodic-Endocalcareous, Epipedal, Grey VERTOSOL

    Location

Borung Highway, Areegra, western Victoria

    Landform

Plain

    Geology

Quaternary Woorinen Formation:
aeolian dune sand, calcareous clay

    Element

Flat

    Slope

0%

    Aspect

Horizon
Depth (cm)
Description

Ap

0–15

Very dark greyish brown (10YR3/2);
sandy clay loam; moderate medium to coarse polyhedral structure; rough ped fabric; very weak consistence when dry; moderately calcareous; many very fine roots; pH 8.5; smooth and clear boundary to:

B1

15–40

Dark grey (2.5Y4/1);
light clay; weak coarse to very coarse platy, parting to very coarse and coarse angular blocky structure; rough ped fabric; firm consistence when dry; very fine to fine roots common; pH 8.5; wavy and clear boundary to:

B21

40–75

Very dark grey (2.5Y3/1);
medium clay; strong coarse to very coarse prismatic, parting to medium to fine subangular blocky structure; smooth ped fabric; strong consistence when dry; very fine to fine roots common; pH 8.5; wavy and gradual boundary to:

B22

75–100

Dark grey (2.5Y4/1) with a few medium faint grey mottles;
medium clay; strong coarse to medium prismatic structure; rough ped fabric; very strong consistence when dry; few fine calcareous nodules (<2 mm); few fine to very fine roots; slightly calcareous; pH 8.5; wavy and gradual boundary to:

B23

100–135+

Light yellowish brown (2.5Y6/4) with a few distinct large dark grey (2.5Y4/1) biological mixing;
medium clay; moderate coarse polyhedral structure; rough ped fabric; strong consistence when moderately moist; few fine calcareous nodules, tubules and very coarse laminae; few very fine roots; very highly calcareous; pH 9.0.

Management Considerations

  • Moderate susceptibility to wind erosion where vegetation coverage inadequate
  • Moderately to strongly alkaline pH trend
  • Imperfect to poorly drained subsoils with grey & yellow mottling
  • Low landscape position
  • Lower subsoil has increased dispersibility
  • Moisture status of the profile variable with depth
  • Moderate to strongly structured throughout
  • Effective rooting depth to 135 cm (observed)

Horizon
Depth (cm)
pH (water)
pH (CaCl2)
EC
dS/m
Exchangeable Cations
cmol-/kg
Coarse Sand
%
Fine Sand
%
Silt
%
Clay
%
Ca
Mg
K
Na
A1
0–15
8.2
7.9
0.27
21
2.8
3.8
0.1
23
22.1
21
23.5
B1
15–40
8.3
8
0.26
22
3.4
2.2
0.4
23.6
20.9
21.5
29
B21
40–75
8.6
7.7
0.11
22
8.6
1.6
1.6
20.1
11.4
25
37.5
B22
75–100
8.8
7.7
0.12
19
9.3
1.5
2.8
28.2
14.7
14.5
38.5
B23
100–135+
9.4
8.6
0.29
12
9.5
1.4
4.7
26.3
15.9
13.5
39
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