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NA171


    Location

Mount Arapiles, western Victoria

    Landform

Playa

    Geology

Quaternary Alluvium: gravel, sand, silt

    Element

Flat

Description
Horizon
Depth (cm)

A1

0–15

Yellowish brown (10YR3/2); sand; single grain (structureless); weak dry consistence; pH 7.2; sharp boundary to:

A2

15–50

Light yellowish brown (105YR6/4); bleached (7.5YR7/2d); fine sand; single grain (structureless); sandy ped-fabric; pH 7.9; sharp boundary to:

B2

50–80+

Strong brown (7.5YR5/6) with common medium (2.5YR4/6) mottles; sandy clay; very strong consistence, dry ; pH 6.8.

Management Considerations

  • Strong texture contrast profile, sodic subsoil, probably strongly sodic at depth.
  • Occasional subsurface horizon, leached (bleached) with restrictive interface with subsoil.
  • Neutral surface soil and upper subsoil, alkaline subsurface soil.
  • Subsoil is sodic and very highly dispersive. Limited (preferably no) exposure necessary to remain stable.
  • Landscape position as footslope; exposure will accelerate rill/gully erosion in susceptible areas( depressions /drainage lines).

Horizon
Depth (cm)
pH (water)
pH (CaCl2)
EC
dS/m
Exchangeable Cations
cmol-/kg
Field Capacity
(pF2.5)
Wilting Point
(pF4.2)
Ca
Mg
K
Na
A1
0–15
7.2
6.6
0.03
A2
15–50
7.9
6.6.
0.10
B2
50–80+
6.8
5.6
0.08
2.1
3.0
0.3
0.9
31.7
18.6
CC BY 4.0 AU

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The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

This material is presented in an archived form and is no longer maintained or updated. It is provided for general information only and should not be relied upon as current advice.

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