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Top Crop2

WLRA - soil pit Topcrop 2- landscape
Cultivated red soils near Arkona
    Site Code
Top Crop2
WLRA - soil pit Topcrop 2- profile
Hypercalcic, Mesonatric, Red Sodosol

    Location

Arkona, western Victoria.

    Landform

Gently undulating plain

    Geology

Quaternary Woorinen Formation: aeolian dune sand, calcareous clay

    Element

Rise

    Slope

2–3%

    Aspect

–
Horizon
Depth (cm)
Description

Ap

0–14

Dark brown (10YR3/3); sandy loam; weakly structured; firm consistence (dry), stronger consistence at base of horizon; non-calcareous; pH 8.1; sharp boundary to:

B21

14–35

Yellowish red (5YR5/6) and light yellowish brown (10YR6/4) heavy clay; moderate to strong coarse blocky structure; strong consistence (dry); non-calcareous; pH 8.7; clear boundary to:

B22k

35–80

Reddish yellow (5YR6/6); light medium clay; moderate coarse blocky, parting to moderate coarse to medium polyhedral structure; many (40%) soft calcareous segregations; pH 9.4:
B3

80–120

Yellowish red (5YR5/8) and light yellowish brown (10YR6/4) medium clay; strong very coarse prismatic, parting to moderate coarse blocky structure; strong consistence (dry); non-calcareous; manganese flecks; pH 8.0.
Management considerations
  • Strong texture contrast between surface (A) horizon and subsoil (B21) horizon
Site
Top Crop2
Sample depth cm
pH
EC
dS/m
NaCl
%
Ex Ca
cmol-/kg
Ex Mg
cmol-/kg
Ex K
cmol-/kg
Ex Na
cmol-/kg
Ex Al
mg/kg
Ex acidity
cmol-/kg
FC
-30okPa
PWP
-1500okPa
KS
%
FS
%
Z
%
C
%
Horizon
H2O
CaCl2
Ap
0–14
8.1
7.6
0.23
NA
7.0
3.1
0.44
1.2
NA
NA
12.3
6.2
45.7
35.4
4.0
13.0
B21
14–35
8.7
7.9
0.51
0.07
6.6
8.5
0.6
3.9
NA
NA
30.7
15.6
37.8
22.4
3.0
34.0
B2k
35–80
9.4
8.7
1.6
0.28
3.2
12
1.0
7.9
NA
NA
35.9
20.1
23.5
16.6
3.0
37.5
B3
80–100
8.0
7.6
2.0
0.35
1.9
12
1.0
8.9
NA
NA
35.6
19.9
NA
NA
NA
NA
Note: NA=not assessed
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