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WLRA135

WLRA - soil pit WLRA135- landscape
Canola stubble, looking north

    Site Code
WLRA135
WLRA - soil pit WLRA135- profile
Epicalcareous-Epihypersodic, Self-mulching, Black VERTOSOL

    Location

Cnr Henty Highway and Minyip Dimboola Road, Kewell North, Western Victoria

    Landform

Undulating plain

    Geology

Quaternary Woorinen Formation:
aeolian dune sand, calcareous clay

    Element

Plain

    Slope
2%

    Aspect
East-north-east

Horizon
Depth (cm)
Description

A11

0–5

Dark grey (10YR4/1);
light medium clay; strong very fine to fine granular structure; rough ped fabric; loose consistence, dry; pH 7.8; sharp and wavy change to:

A12

5–20

Dark grey (10YR4/1);
medium clay; strong coarse platy, parting to moderate angular blocky structure; rough ped fabric; very firm consistence, dry; common very fine roots; pH 8.4; clear and wavy change to:

B21

20–60

Very dark greyish brown (10YR3/2);
medium clay; strong coarse to very coarse prismatic, parting to moderate very coarse to coarse angular blocky structure; rough and smooth ped fabric; strong consistence, dry; very few medium calcareous soft segregations present; many distinct and prominent clay skins and slickensides evident; contains common very fine roots; pH 9.0; gradual and wavy change to:

B22

60–95

Very dark grey (10YR3/1);
medium clay; strong coarse to very coarse prismatic, parting to moderate very coarse to coarse angular blocky structure; rough and smooth ped fabric; strong consistence, moderately moist; contains a few coarse calcareous soft segregations; many distinct and prominent clay skins and slickensides evident; common very fine roots present; pH 9.2; clear and wavy change to:

B23k

95–110

Very dark grey (2.5Y3/1);
medium clay; strong coarse prismatic parting to coarse angular blocky structure; smooth ped fabric; very firm consistence moderately moist; contains a few gypseous veins with common coarse calcareous soft segregations; many distinct and prominent clay skins and slickensides evident; common very fine roots present; pH 9.2; clear and wavy change to:

B24

110–150

Light olive brown (10YR5/3);
light clay; strong coarse to very coarse prismatic, parting to moderate very coarse to coarse angular blocky structure; smooth ped fabric; strong consistence, moderately moist; contains very few coarse calcareous soft segregations; many prominent clay skins and slickensides evident; few very fine roots present; pH 9.1.

Management Considerations:

  • Cracking clay soil.
  • Alkaline subsoil.
  • Friable (self mulching) surface soil but coarser structured subsurface soil, possible compaction.
  • Alkaline subsoil, calcareous and strongly sodic in subsoil.
  • Boron levels higher in subsoil.

Horizon
Depth (cm)
pH (water)
pH (CaCl2)
EC
dS/m
NaCl
%
Exchangeable Cations
cmol-/kg
Field Capacity
(pF2.5)
Wilting Point
(pF4.2)
Coarse Sand
%
Fine Sand
%
Silt
%
Clay
%
Ca
Mg
K
Na
A11
0-5
7.8
7.4
0.24
25
5.1
3.3
0.53
33.6
19
20.8
16.7
13.8
43
A12
5-20
8.4
7.8
0.24
30
5.7
1.1
1.2
35.1
20.3
24.3
17.1
9
44
B21
20-60
9
8.1
0.31
0.01
19
9.4
0.9
5.4
45.3
21
23.4
13.9
8.8
48
B22
60-95
9.2
8.4
0.62
0.04
14
8.8
1.2
8.8
45.5
20.9
27.4
14.8
7.5
43.5
B23
95-110
9.2
8.4
0.8
0.05
13
8.5
1.2
9.8
49.2
23.6
24.4
12.8
6.5
43.5
B24
110-150
9.1
8.4
1.1
0.08
13
10
1.4
12
45
21.7
20
12.7
6.5
50
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