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LWA16

Note: This profile is in draft format only, will be finalised in the near future

Australian Soil Classification: ..................., CALCAROSOLSite Description: Stubble paddock.
Geology: Quaternary aeolian and alluvial deposits

LWA16 Landscape
LWA16 Landscape

Soil Profile Morphology:

Surface Soil

A110-10 cmBrown (7.5YR4/3); light sand; loose consistence (moderately moist) soft surface conditions; moderately calcareous; pH 8.7:
LWA16 Profile
LWA16 Profile
A1210-15 cmBrown (7.5YR4/3); loamy sand; massive; very weak consistence (dry); some platey structure; moderately calcareous; pH 8.7; abrupt change to:
A215-30 cmReddish brown (5YR4/4); fine sandy clay loam (medium sand); massive; firm to very firm consistence (dry); few (2-5%) calcareous nodules (2-4 mm); some macropores; highly calcareous; pH 8.7; gradual change to:
Subsoil

B21k30-50 cmYellowish red (5YR5/6); light clay (sandy); weak coarse to medium (10-50 mm) blocky structure; very weak to weak consistence (dry); many (40%) carbonate/silica nodules (2-30 mm); pH 8.9:
B22k50-70 cmRed (2.5YR5/8); medium clay; weak to moderate medium to fine (5-20 mm) sub-angular blocky structure; very weak to weak consistence (slightly moist); many (30%) carbonate/silica nodules (2-30 mm) and calcareous tubules; pH 8.9; gradual change to:
B23k70-100 cmRed (10R4/6); medium clay (sandy); weak to moderate coarse (50-100 mm) prismatic, parting to moderate to strong, coarse to medium (10-50 mm) sub-angular blocky structure; firm to very firm consistence (dry); many (40%) carbonate/silica nodules; pH 9.2; gradual change to:
B24100-160+ cmRed (2.5YR4/6); medium clay (sandy); strong, coarse to medium (10-50 mm) angular blocky structure; fine manganese flecks present; carbonate/silica nodules common (10%) with soft carbonate segregations in pipey structures; pH 9.4.


Key Profile Features:



Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A11 horizon)
Strongly Alkaline
None
Subsoil
(B21k horizon)
Strongly Alkaline
None1
Deeper subsoil
(at 100-160+ cm)
Very Strongly Alkaline
None1

LWA16 Graphs

Horizon
Horizon Depth
pH (water)
pH CaCl2
EC
1:5
Org. Carbon
mg/kg
Exchangeable Cations
Ca
Mg
K
Na
Meq/100g
A11
0-10
8.7
8.2
0.11
0.62
20
1.2
0.95
0.08
A12
10-15
8.7
8.3
0.11
0.51
19
1.1
0.71
0.08
A2
15-30
8.7
8.2
0.13
0.5
25
2.7
1.1
0.1
B21k
30-50
8.9
8.3
0.13
23
5.4
0.61
0.19
B22k
50-70
8.9
8.4
0.15
21
8.9
0.81
0.3
B23k
70-100
9.2
8.5
0.19
18
11
1.5
1.1
B24
100-160+
9.4
8.7
0.29

Horizon
Horizon Depth
Boron
mg/kg
Field
pF2.5
g/100g
Wilting Point
pF4.2
g/100g
Coarse Sand
(0.2-2.0mm)
%
Fine Sand
(0.02-0.2mm)
%
Silt
(0.002-0.02mm)
%
Clay
(<0.002mm)
%
A11
0-10
0.9
10.9
4.7
55
29
7
5
A12
10-15
1
10.8
4.1
62
23
6
6
A2
15-30
1.1
17.9
8.9
39
20
8
21
B21k
30-50
1.1
20.6
10.1
34
17
8
19
B22k
50-70
1.3
21.5
10.9
33
13
7
23
B23k
70-100
6.5
24.7
12.6
35
15
7
31
B24
100-160+
15
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