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ORZC9

Location: Birchip
Australian Soil Classification: Endohypersodic, Pedal, Calcic CALAROSOL
General Landscape Description: Gently undulating plain with some gilgai microreliefSite Description: Ploughed cropping paddock
Geology: Quaternary (Woorinen Formation)Vegetation: Mallee


Soil Profile Morphology:

Surface Soil

Ap0-20 cmDark reddish brown (5YR3/4); light clay; weak coarse blocky structure; soft surface condition; very firm consistence (dry); moderately calcareous; pH 8.4; clear change to:
ORZC9 Profile
ORZC9 Profile
    Subsoil
B2120-35 cmDark reddish brown (5YR3/3); light clay; weak coarse prismatic structure; firm consistence (dry); highly calcareous; pH 8.5; sharp change to:
B2235-50 cmDark brown (7.5YR3/2); light medium clay; weak coarse to medium blocky structure; many macropores present; few (5%) fine earth carbonates; very highly calcareous; pH 8.6; clear change to:
B23k50-70 cmBrown (7.5YR5/2) with yellowish red (5YR5/6) mottles; light clay; weak-moderate very coarse prismatic, parting to moderate coarse blocky structure; few (5%) fine earth carbonates; strong consisence (dry); pH 9.2; clear and wavy change to:
B2470-110 cmLight brown (7.5YR6/4) with reddish yellow (7.5YR6/6) and grey (10YR6/1) mottles; [very dark grey (10YR3/2) with yellowish red (5YR5/8) in some patches associated with microrelief; light medium clay; weak moderate very coarse prismatic structure; few (2-5%) fine earth carbonates; pH 9.5; gradual change to:
B25110-150 cmYellowish red (5YR5/6) with light brownish grey (10YR6/2) mottles; medium clay; weak-moderate coarse prismatic structure; some soft manganese and few (5%) fine earth carbonates with some hard calcareous nodules; pH 9.7.


Key Profile Features:

Soil Profile Characteristics:
pH
Salinity Rating
Surface
(A1 horizon)
Moderately Alkaline
Low
Non-Sodic
None
Upper Subsoil
(20-35 cm)
Moderately Alkaline
Low
Non-Sodic
None
Deeper subsoil
(at 70-110 cm)
Very Strongly Alkaline
Low
Strongly Sodic
Strong
Deeper Subsoil
(at 110-150 cm)
Extremely Alkaline
Low-Medium
Strongly Sodic
Strong
ORZC9 pHORZC9 salinityORZC9 sodicity

ORZC9 clay

ORZC9 boron

Horizon
Horizon Depth
pH (water)
pH CaCl2
EC
1:5
NaCl
Exchangeable Cations
Ca
Mg
K
Na
Meq/100g
Ap
0-20
8.4
7.9
0.32
<0.01
19
5.5
2.4
0.3
B21
20-35
8.5
7.9
0.17
32
6.9
1.2
0.32
B22
35-50
8.6
8
0.17
32
7.9
0.89
0.63
B23k
50-70
9.2
8.3
0.24
27
12
1.1
4
B24
70-100
9.5
8.5
0.32
<0.01
8.1
11
1
4.8
B25
100-150
9.7
9.3
0.59
0.02
5.5
14
1.3
9.4

Horizon
Horizon Depth
Boron
mg/kg
Field
pF2.5
g/100g
Wilting Point
pF4.2
g/100g
Coarse Sand
(0.2-2.0mm)
%
Fine Sand
(0.02-0.2mm)
%
Silt
(0.002-0.02mm)
%
Clay
(<0.002mm)
%
Ap
0-20
2.1
32.1
16.1
31
14.7
23.5
22
B21
20-35
1.8
32.2
17.4
28.8
17.2
18.5
29
B22
35-50
1.7
31.3
16.8
29.6
17.7
18.5
24.5
B23k
50-70
2.7
32.2
17.7
35
11.9
18.5
25
B24
70-100
4.8
34.2
16.3
41.6
11.7
11
29.5
B25
100-150
12
CC BY 4.0 AU

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