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LS7

WLRA - soil pit LS7- landscape
Level plain with black box trees
    Site Code
LS7
WLRA - soil pit LS7- profile
Epicalcareous-Endohypersodic Epipedal, Grey Vertosol

    Location

Diapur, western Victoria

    Landform

Plain

    Geology

Quaternary Woorinen Formation: aeolian dune sand, calcareous clay

    Element

Flat

    Slope

0%

    Aspect

–
Horizon
Depth (cm)
Description

A1

0–10

Dark grey (10YR4/1); medium clay; strong fine blocky structure; weak consistence (dry); slight sporadic bleach occurs at the base of this horizon in patches; pH 8.0.

B21

10–30

Grey (10YR5/1); medium heavy clay; moderate coarse prismatic structure (with conchoidal fracturing evident); strong consistence (dry); pH 8.5.

B22

30–70

Grey (10YR5/1); heavy clay; strong polyhedral structure; pH 9.0; gradual and wavy boundary to:

B23

70–110

Greyish brown (10YR5/2); medium heavy clay; strong polyhedral structure; contains few (2-5%) soft and hard carbonate segregations; pH 9.4.

B24

110–160

Yellowish brown (10YR5/4); medium heavy clay; strong prismatic, parting to strong polyhedral structure; contains very few (2%) soft and hard carbonate segregations; pH 9.7.

B25

160+

Light grey (2.5Y7/2); medium clay with a diffuse reddish brown mottle; moderate coarse lenticular structure.
Management considerations
  • Clay textures throughout profile. Coarser structure in subsoil
  • Significant cracking occurs when soil is dry. Cracks usually occur at the surface as well as at depth.
  • Vertic properties (ie. strong shrink-swell potential). Compaction potential in upper subsoil due to moisture conditions when trafficked.
  • Note tightly held water amount at wilting point (PWP)
  • Less organic matter lower in profile and mottling –reducing conditions
  • Alkaline profile, strongly sodic in lower subsoil (below70 cm)
  • Plain, slow site drainage
Site
LS7
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
8.0
7.3
0.2
NA
26
6.6
2.1
1.4
NA
NA
40
27
NA
NA
NA
NA
B21
10–30
8.5
7.2
0.09
NA
18.6
8.5
1.4
2.6
NA
NA
44
32.2
NA
NA
NA
NA
B22
30–70
9.0
7.9
0.19
NA
14
8.1
1.5
3.5
NA
NA
NA
NA
NA
NA
NA
NA
B23
70–110
9.4
8.5
0.42
NA
11.5
9.6
1.7
8.2
NA
NA
NA
NA
NA
NA
NA
NA
B24
110–160
9.7
8.6
0.42
NA
7.7
11.2
1.7
12.5
NA
NA
NA
NA
NA
NA
NA
NA
B25
160+
9.7
8.8
0.45
NA
8.4
10.7
1.5
13.7
NA
NA
NA
NA
NA
NA
NA
NA
Note: NA=not assessed
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