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WLRA146

WLRA - soil pit WLRA146- landscape
Terrace with lucerne

    Site Code
WLRA146
WLRA - soil pit WLRA146- profile
Eutrophic, Mesonatric, Brown Sodosol

    Location

Landsborough Road, Joel, western Victoria

    Landform

Terrace

    Geology

Quaternary river terrace:
fluvial gravel, sand, silt

    Element

Terrace plain

    Slope

<1%

    Aspect

North
Horizon
Depth (cm)
Description

A1

0–10

Brown (10YR4/3); loam, fine sandy; massive (structureless); weak dry consistence; common medium to coarse and fine to very fine roots; pH 6.0; abrupt and smooth boundary to:

A2

10–25

Yellowish brown (10YR5/4); conspicuously bleached very pale brown (10YR7/4 dry); sandy clay loam, fine sandy; massive (structureless); very firm dry consistence; common medium to coarse and fine to very fine roots; pH 6.5; abrupt and irregular boundary to:

B21

20–50

Brown (7.5YR4/4) medium heavy clay; moderate medium prismatic, parting to strong fine to medium subangular blocky structure; rough prismatic and smooth subangular blocky ped-fabric; strong dry consistence; common distinct clay skins; common medium to coarse and fine to very fine roots; pH 7.0; gradual and smooth boundary to:

B22

50–65

Yellowish brown (10YR5/4) with many medium distinct (7.5YR4/6) mottles; light medium clay; weak medium prismatic, parting to moderate fine and very fine subangular blocky structure; rough ped-fabric; firm moderately moist consistence; common medium to coarse and few fine to very fine roots; pH 8.5; gradual and smooth boundary to:

B23

65–95

Yellowish brown (10YR5/6) with few fine faint light grey mottles; medium clay; weak medium subangular blocky structure; rough ped-fabric; strong dry consistence; few fine organic root linings; common medium to coarse roots, few fine to very fine roots; pH 8.5; gradual and smooth boundary to:

B3

95–120

Yellowish brown (10YR5/4); medium clay; moderate fine prismatic parting to moderate fine and very fine subangular blocky structure; rough ped fabric; strong moderately moist consistence; very few organic root linings, common fine manganiferous nodules; few faint slickensides; common medium to coarse and few fine to very fine roots; pH 8.5 :
Management considerations
  • Strong texture contrast profile, highly sodic subsoil
  • Subsurface horizon is leached (bleached) with restrictive interface with subsoil. Fewer nutrients available
  • Slightly acidic/neutral surface and subsurface soil and alkaline deeper subsoil
  • Note high silt content and higher proportion of magnesium to calcium
  • Deep subsoil is very highly dispersive. Limited (preferably no) exposure required to remain stable. Slightly saline with depth.
  • Surface soil is slightly to moderately dispersive
  • Landscape position (ie. terrace). Variable site drainage

Site
WLRA146
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
A1
0–10
6.2
5.7
0.16
NA
4.6
0.97
1.7
0.19
<10
NA
NA
NA
6.8
42.1
25.5
18.5
A2
10–25
6.3
5.5
0.1
NA
1.9
1.3
0.25
0.57
<10
NA
NA
NA
NA
NA
NA
NA
B21
20–50
7.9
7
0.26
0.03
3.9
8.3
0.6
3.6
NA
NA
31.1
16.4
0.3
19.7
28
49.5
B22
50–65
8.9
8
0.43
0.06
2.6
8.8
0.6
5.2
NA
NA
NA
NA
NA
NA
NA
NA
B23
65–95
8.9
8
0.43
0.06
2.1
7.6
0.5
5.1
NA
NA
NA
NA
NA
NA
NA
NA
B3
95–120
8.8
8
0.54
0.08
2.7
10
0.7
6.9
NA
NA
NA
NA
NA
NA
NR
NA
Note: NA=not assessed
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