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LS13

WLRA - soil pit LS13- landscape
Gently undulating plain of self-mulching clays
    Site Code
LS13
WLRA - soil pit LS13- profile
Epicalcareous-Epihypersodic, Self-mulching, Brown Vertosol

    Location

Netherby, western Victoria

    Landform

Gently undulating plain

    Geology

Quaternary Woorinen Formation: aeolian dune sand, calcareous clay

    Element

Flat

    Slope

0–1%
Horizon
Depth (cm)
Description

A1

0–10

Dark brown (7.5YR3/2); light medium clay; moderate self mulching coarse blocky structure; weak consistence (moist); pH 8.4.

B21

10–35

Strong brown (7.5YR4/6); heavy clay; strong coarse prismatic, parting to coarse blocky structure; pH 9.2.

B22k

35–60

Yellowish red (5YR5/6); medium heavy clay; firm consistence (moist); contains few (5%) soft and hard calcium carbonate in pockets; pH 9.3.

B23

60–80

Very pale brown (10YR7/4); medium clay; pH 9.3.

B24

80–110

Pale brown (10YR6/3); medium clay; strong lenticular structure; firm consistence (moist); pH 9.2.

B25

110+

Light grey (2.5Y7/2); medium clay; strong lenticular structure; pH 8.9.
Management considerations
  • High clay content throughout the profile
  • Self-mulching and friable nature of surface soil
  • Significant cracking occurs when dry. Cracks usually appear at the surface
  • Strong vertic properties (as evidenced by lenticular structure and slickensides)
  • Alkaline profile with high sodium, salinity and magnesium at depth
  • Calcium in upper soil, including calcium carbonate
Site
LS13
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
0–10
8.4
7.7
0.25
NA
16.5
4
1.9
0.9
NA
NA
30.1
18.7
NA
NA
NA
NA
B21
10–35
9.2
8.3
0.49
NA
13
10
1.3
7.1
NA
NA
48.1
31.2
NA
NA
NA
NA
B22k
35–60
9.3
8.6
1.05
0.15
6.7
9.7
1.2
10.9
NA
NA
43.5
27.4
NA
NA
NA
NA
B23
60–80
9.3
8.7
1.31
0.2
6.3
9.7
1.3
11.5
NA
NA
NA
NA
NA
NA
NA
NA
B24
80–110
9.2
8.6
1.52
0.26
7.2
11.5
1.3
14
NA
NA
NA
NA
NA
NA
NA
NA
B25
110+
8.9
8.4
1.65
0.29
6.2
11.5
1.3
15.2
NA
NA
NA
NA
NA
NA
NA
NA
Note: NA=not assessed
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