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PVI11

Location: PVI Hamilton

Australian Soil Classification: Mottled, Epipedal, Black VERTOSOL (very gravelly surface)
Northcote Factual Key: Ug 5.16
Great Soil Group: Possibly Wiesenboden

Geology: Alluvium overlying Quaternary basalt.
General Landscape Description: Level plain (former swamp).
Soil Mapping Unit: Buckley Clay.

Site Description: Grazing paddock.

Photo: Soil Pit PVI 11 Landscape
PVI11 Landscape


Soil Profile Morphology:

Surface Soil

A110-10 cmVery dark greyish brown (10YR3/2); gravelly clay; weak consistence (dry); many (40%) ferruginous nodules (2-5 mm); rusty root channel mottling; pH 5.7; clear change to:

Photo: Soil Pit PVI 11 Profile
PVI11 Profile
A1210-20 cmVery dark brown (10YR2/2); gravelly clay; moderate strong blocky structure; weak consistence (dry); very many (60%) ferruginous nodules (2-5 mm); pH 6.5; rusty root channel mottling; abrupt change to:

Subsoil

B21
20-90 cmVery dark grey (2.5Y 3/0) with few (10%) faint brownish yellow (10YR6/6) mottles; heavy clay; moderate very coarse prismatic, parting to strong coarse blocky structure; slickensides; strong cracking; very strong consistence (dry); pH 7.1; gradual change to:

B2290-120 cmDark grey (10YR4/1) with faint brownish yellow (10YR6/6) mottles; heavy clay; strong medium to coarse lenticular structure; very firm consistence (moist); pH 5.9; gradual change to:

B23120+ cmGrey (10YR5/1) with faint brownish yellow (10YR6/6) mottles; heavy clay; strong medium to coarse lenticular structure; slickensides; very firm consistence (moist); pH 6.0.

Key Profile Features:

Soil Profile Characteristics:


pH
Salinity Rating
Surface Soil
(A1 horizon)
Moderately Acid
Low
Non Sodic
None
Upper Subsoil
(20- 90 cm)
Near Neutral
Low
Marginally Sodic
Moderate 1
Deeper Subsoil
(at 120+ cm)
Moderately Acid
High-Very High
Non Sodic
None
1 Strong dispersion after remoulding.
Image: PVI11 Graphs

Horizon
Horizon
Depth
(cm)
pH
(water)
pH
(CaCl2)
EC 1:5
NaCI
%
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A11
0-10
5.7
5.2
0.17
14
11
1.1
0.50
A12
10-20
6.5
5.9
0.15
12
14
1.1
0.73
B21
20-90
7.1
6.4
0.13
14
25
1.3
2.4
B22
90-120
5.9
5.6
1.7
0.32
13
20
0.4
1.7
B23
120+
6.0
5.8
1.9
0.31
12
20
0.5
1.6


Horizon
Horizon
Depth
(cm)
Exchangeable
Aluminium mg/kg
Exchangeable Acidity
meq/100g
Field Capacity
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
0-10
12
33
26
35
8
13
28
A12
10-20
35
21
37
8
11
37
B21
20-90
60
33
1
8
15
69
B22
90-120
11
12
63
33
1
9
17
71
B23
120+
11

Profile Described By: Mark Imhof, Paul Rampant (January 2001).
CC BY 4.0 AU

This page contains material sourced from the Victorian Resources Online (VRO) website, originally published by the State Government of Victoria.

The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

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