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SW89

SW89  landscape
Shallow stony soil associated with SW89

    Site Code
SW89
SW89  profile
Endocalcareous, Self-Mulching, Black VERTOSOL

    Location
Mount Pollock Road, 1 km south of Mount Pollock
    Landform
Low hill associated with Mt Pollock
    Geology
Quaternary Volcanics: basalt
    Element
Crest
    Slope
3%
    Aspect
North-east
Horizon
Depth (cm)
Description
A1
0-10 Dark brown (7.5YR3/2 moist); light clay; very finely pedal, self-mulching, cracking to surface; pH 6.8; clear boundary to:

B21t
10-20 Very dark brown (10YR2/2 moist); light medium clay; fine, smooth faced, angular blocky, parting to medium to fine (50-20 mm) polyhedral structure; firm consistence (moist); pH 7; clear boundary to:

B22t(ss)
20-50/70 Very dark brown (10YR2/2 moist), with brown (7.5YR5/4 moist) mottles (<10%); medium to heavy clay; angular blocky, parting to coarse lenticular (20-50 mm) structure; obvious (<60 mm), frequent slickensides; strong consistence; pH 7.8; abrupt and wavy boundary to:

B23k/R
50/70 +Brown (7.5YR4/3 moist), >50% soft carbonate in clay matrix, fragments of hard basalt; pH 8.6.

Management considerations
Highly chemically fertile but of limited spatial extent at this site being confined to the crest of the hill and interspersed with a rockier variant.. The high clay content and swelling nature of the clay results in this soil being very sticky when wet and prone to damage by traffic.

Analytical data
Site SW89
Sample
depth
pH
EC
NaCl
Ex Ca
Ex Mg
Ex K
Ex Na
Ex Al
Ex acidity
FC
(-10kPa)
PWP
(-150kPa)
KS
FS
Z
C
Horizon
cm
H2O
CaCl2
dS/m
%
cmolc/kg
cmolc/kg
cmolc/kg
cmolc/kg
mg/kg
cmolc/kg
%
%
%
%
%
%
A1
0-5
6.8
6.2
0.18
N/R
21.0
13.0
1.5
0.73
N/R
N/R
47.2
28.8
6.6
15.0
18.5
48.5
B21
10-20
7.0
6.2
0.15
N/R
22.0
17.0
1.3
1.3
N/R
N/R
60.9
35.8
3.9
10.7
12.0
63.5
B22
20-60
7.8
7.8
0.14
N/R
23.0
17.0
0.77
1.9
N/R
N/R
61.7
34.9
4.3
12.9
17.5
56.0
B23K
60+
8.6
7.9
0.34
0.01
26.0
21.0
0.5
3.1
N/R
N/R
69.2
41.6
N/R
N/R
N/R
N/R
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