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LS14a

WLRA - soil pit LS14a- landscape
Lower slope of dune on undulating sand plain
    Site Code
LS14a
WLRA - soil pit LS14a- profile
Hypercalcic, Subnatric, Red Sodosol (sandy)

    Location

Propodollah, western Victoria

    Landform

Gently undulating plain

    Geology

Quaternary Woorinen Formation: aeolian dune sand, calcareous clay

    Element

Dune slope (lower)
Horizon
Depth (cm)
Description

A1

0–20

Dark brown (7.5YR3/4) loamy sand; single grain (structureless); weak consistence (dry); pH 6.6.

A2

20–30

Yellowish red (5YR4/6) sand; massive (structureless); firm consistence (dry); pH 6.5.

B21

30–70

Yellowish red (5YR5/8) heavy clay; strong coarse columnar (with bleached cemented capping) parting to strong coarse blocky structure; very strong consistence (dry); pH 8.6.

B22

70+

Brownish yellow (10YR6/8) with (2.5YR4/8) mottles; light medium clay; weaker columnar structure; strong consistence (dry); contains many (20­50%) soft carbonate segregations; pH 9.3.
Management considerations
  • Distinctive texture contrast between sandy surface (A) horizons and clay (B) subsoil.
  • Strong coarse columnar structure with bleached capping at top of subsoil. Neutral, relatively deep surface soil over alkaline subsoil
  • Concentration of nutrients in upper subsoil, and lower surface soil has least amount of nutrients
  • Lower slope of dune, moderate site drainage. Profile would indicate some lateral flow
Site
LS14a
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
A11
0–20
6.6
6
0.05
NA
2.3
0.4
0.3
0.1
NA
NA
5.7
2.6
NA
NA
NA
NA
A12
20–30
6.5
5.5
<0.05
1.5
0.4
0.1
0.1
NA
NA
NA
NA
NA
NA
NA
NA
B21
32–70
8.6
7.9
0.5
0.09
8.7
12
0.9
2.5
NA
NA
32.7
21
NA
NA
NA
NA
B22
70+
9.3
8.5
0.78
0.12
4.5
10
0.7
4
NA
NA
NA
NA
NA
NA
NA
NA
Note: NA=not assessed
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