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ORZC4

Location: Birchip.Australian Soil Classification: Epicalcareous-Endohypersodic, Pedal, Calcic, CALCAROSOL.
Geology: Woorinen Formation.
General Landscape Description: Location on westerly facing gentle slope within a gently undulating plain. This site represents the depression component of the gilgai microrelief (opposite site ORZC 3).
Site Description: Pasture (medic).

Photo: Site ORZC4 Landscape
Site ORZC4 Landscape

Soil Profile Morphology:

Surface Soil

A1 0-15 cmBrown (7.5YR4/4); light medium clay; very weak consistence (dry); contains iron sandstone floaters at surface; pH 8.5; abrupt change to:

Photo: Site ORZC4 Soil Profile
Site ORZC4 Soil Profile
Subsoil

B2115-40 cmDark greyish brown (10YR4/2); medium clay; weak consistence (dry); pH 8.9; clear and wavy change to:

B22 40-100 cmPale brown (10YR6/3) with grey (10YR6/1) mottles; medium heavy clay; moderate coarse prismatic, parting to coarse blocky structure; strong consistence (dry); contains fine earth carbonates; sandy patches present; pH 9.3; gradual change to:

B23 100+ cmLight yellowish brown (10YR6/4) with light brownish grey (10YR6/2) and yellowish red (5YR5/6) mottles; medium heavy clay; sand on ped faces; pH 9.5.

Key Profile Features:
Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Moderately Alkaline
Low
Non-Sodic
None
Subsoil
(B21 horizon)
Strongly Alkaline
Low
Strongly Sodic
None1
Deeper subsoil
(at 1 m)
Very Strongly Alkaline
Very High
Strongly Sodic
Moderate
1 Strong dispersion after remoulding.


    Photo: Site ORZC4 Soil graphs

Horizon
Horizon Depth (cm)
pH
(water)
pH (CaCl2)
EC
1:5
NaCI %
Exchangeable Cations
Boron
mg/kg
Field Capacity
pF 2.5
Wilting Point
pF 4.2
Coarse Sand (0.2 - 2 mm)
Fine Sand
(0.02 -0.2 mm)
Silt
(0.002 -0.02 mm)
Clay
(<0.002 mm)
Ca
Mg
K
Na
meq/100g
A1
0-15
8.5
8.0
0.21

31
7.3
2.1
0.65
2.0
38
18
15
23
16
38
B21
15-35
8.9
8.2
0.30
0.02
17
8.3
1.2
3.0
2.0
38
18
17
24
10
44
B22
40-60
9.3
8.5
0.65
0.08
8.7
12
1.0
7.4
8.2
45
22
17
22
11
45
B23
80-100
9.5
8.7
0.61
0.26
6.3
10
1.2
14
16
43
25
12
18
15
52
B24
100+
8.7
8.1
1.9
0.31
6.1
8.8
1.0
12
13







Profile Described By: Mark Imhof, Paul Rampant and Steve Ryan (11/10/2000).
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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