Your gateway to a wide range of natural resources information and associated maps

Victorian Resources Online

SW40

Location: Barongarook WestAustralian Soil Classification: Humose-Acidic, Mesotrophic, Grey DERMOSOL (very thick loamy surface)
General Landscape Description: Gently undulating rise.Mapping Unit: Unit 147 or 157 (Maher and Martin, 1987).
Site Description: Grazing paddock (dairy).Geology: Tertiary - Dilwyn Formation.

SW40 Landscape


Soil Profile Morphology:

Surface Soil

A110-25 cmBlack (10YR2/1); light fine sandy clay loam; weak to moderate coarse blocky structure; weak consistence moist; pH 5.4:
SW40 Profile
SW40 Profile
A1225-40 cmVery dark brown (10YR2/2); fine sandy clay loam; weak coarse blocky structure; weak consistence moist; pH 5.5:
A2140-60 cmBrown (10YR5/3); fine sandy clay loam; weakly structured; weak consistence moist; pH 5.3:
A2260-75 cmPale brown (10YR6/3); fine sandy loam; weakly structured; firm consistence moist; pH 5.1:
Subsoil
B2175-90 cmPale brown (10YR6/3) with brownish yellow (10YR6/6) mottles; fine sandy clay; weak to moderate medium blocky structure; firm consistence moist; pH 5.1:
B2290+ cmGrey (10YR5/1) with yellowish brown (10YR5/8) mottles; fine sandy clay; strong coarse blocky, parting to moderate to strong medium blocky structure; shiny faced peds; firm consistence moist; contains very few (2%) quartz fragments (2-5 mm in size); pH 5.0.

Key Profile Features:

Soil Profile Characteristics:

pH
Salinity Rating
Sodicity
Dispersion
Surface
(A11 horizon)
Strongly Acid
Low-Moderate
Non-Sodic
None
Subsoil
(B21 horizon)
Strongly Acid
Low-Moderate
Non-Sodic
None
Deeper subsoil
(at 90+ cm)
Strongly Acid
Low-Moderate
Non-Sodic
None

SW40 pH
The whole profile is strongly acid throughout.
SW40 Salinity
The whole profile has a low to moderate salinity rating throughout.
SW40 Clay
The clay content increases gradually with depth.

Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC 1:5
NaCl
%
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A11
0.25
5.4
4.7
0.23
0.03
3.8
1.2
0.2
0.3
A12
25-40
5.5
4.8
0.23
0.04
1.4
0.9
0.1
0.1
A21
40-60
5.3
4.7
0.35
0.07
0.6
0.6
0.05
0.05
A22
60-75
5.1
4.6
0.26
0.06
0.5
1.9
<0.1
0.2
B21
75-90
5.1
4.5
0.27
0.07
0.9
0.6
<0.1
0.05
B22
90+
5
4.4
0.26
0.06
0.3
2.9
<0.1
0.4

Horizon
Horizon Depth
(cm)
Field
pF2.5
Wilting Point
pF4.2
Coarse Sand
(0.2- 2.0 mm)
Fine Sand
(0.02- 0.2 mm)
Silt
(0.002- 0.02 mm)
Clay
(<0.002 mm)
A11
0.25
26.4
10.7
26
38
17
12
A12
25-40
17.4
5.3
28
40
18
13
A21
40-60
16
3.1
29
43
20
10
A22
60-75
20.5
7.3
25
38
15
21
B21
75-90
25.2
11.2
22
33
15
31
B22
90+
25.7
11
21
34
12
31


Management Considerations:

Profile Described By: Mark Imhof and Austin Brown, August 1998.

Page top