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NA171

    Site Code
NA171

    Location

Mount Arapiles, western Victoria

    Landform

Playa

    Geology

Quaternary Alluvium: gravel, sand, silt

    Element

Flat
Horizon
Depth (cm)
Description

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 (7.5YR7/2); fine sand; single grain (structureless)sandy ped-fabric; pH7.9; sharp boundary to:

B2

50–80+

Strong brown (7.5YR5/6) with common medium (2.5YR4/6) mottles; sandy clay; very strong dry consistence; 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).
Site
NA171
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
0–15
7.2
6.6
0.03
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
A2
15–50
7.9
6.6.
0.10
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
B2
50–80+
6.8
5.6
0.08
NA
2.1
3.0
0.3
0.9
NA
2.9
31.7
18.6
NA
NA
NA
NA
Note: NA=not assessed
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