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Site DU56

Location: Niranda SouthAustralian Soil Classification: Vertic, Mottled-Subnatric, Brown SODOSOL

Image:  DU56 Landscape
Site DU56 Landscape.


Soil Profile Morphology:

Surface Soil

O0-4 cmOrganic mat:

Image:  DU56 Profile
Site DU56 profile.
A14-12 cmVery dark greyish brown (10YR3/2) with rusty root channel mottling; sandy clay loam (spongy); weak coarse to medium blocky structure; firm consistence (dry); pH 5.9; clear change to:

A212-20 cmLight yellowish brown (10YR6/4) with dark greyish brown (10YR4/2) mottles; sandy clay loam; weak coarse blocky parting to medium blocky structure; firm consistence (dry); pH 6.6; sharp change to:

Subsoil

B2120-30 cmDusky red (2.5YR4/2) with 10% yellowish brown (10YR5/8) mottles; medium heavy clay; moderate to strong coarse prismatic, parting to moderate to strong coarse blocky structure; strong consistence (dry); pH 7.1; clear change to:

NOTE: gilgai variability where B21 can also be LCfs, 10YR3/2.

B2230-60 cmDark greyish brown (2.5Y4/2) with 30% yellowish brown (10YR5/6) mottles; light medium clay; strong consistence (dry); few (5-10%) manganese staining in patches; pH 7.4; clear change to:

B2360-100 cmOlive brown (2.5Y4/4) with 40% yellowish brown (10YR5/6) mottles; heavy clay; strong medium to fine lenticular structure; weak consistence (dry); pH 7.2; clear change to:

B24100-140 cmYellowish brown (10YR5/6) with 40% greyish brown (2.5Y5/2) and 5% red (2.5YR5/6) mottles; medium heavy clay; strong coarse lenticular, parting to strong fine lenticular structure; weak consistence (dry); many (80%) ferruginous sub-rounded nodules (2-15 mm); pH 7.8.

Image:  DU56 Profile1
Profile variability


Key Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Slightly Acid
Low
Sodic
Subsoil
(B21 horizon)
Slightly Acid
Low
Sodic
Deeper subsoil
(at 110-140 cm)
Slightly Alkaline
Low
-

Image:  DU56 Graphs

Horizon
Horizon Depth
(cm)
pH
(water)
pH
CaCl2
EC
1:5

NaCl

%
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
O
0-4
A1
4-12
5.9
5.3
0.17
6.7
1.6
0.54
0.99
A2
12-20
6.6
5.8
0.09
5.6
1.3
0.37
0.65
B21
20-30
7.1
6.5
0.16
<0.01
6.7
1.9
0.7
1.4
B22
30-60
7.4
6.8
0.28
0.02
7.8
2.2
0.6
2.1
B23
60-100
7.2
6.9
0.45
0.05
B24
100-140
7.8
7.3
0.22
0.02
B25
140+
8
7.5
0.43
0.05

Horizon
Horizon Depth
(cm)
Exchangeable Acidity
meq/100g
O
0-4
A1
4-12
13
A2
12-20
6.6
B21
20-30
B22
30-60
B23
60-100
B24
100-140
B25
140+


Profile Described By: Mark Imhof and Siegfried Engleitner, August 2004.
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