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ALRA065

WLRA - soil pit ALRA65 - landscape
Cuestal landscape of the Grampians Ranges

    Site Code
ALRA065



    Location
Long Gully Road, Pomonal
    Landform
Scarp-footslope
    Geology
Grampians colluvium
    Element
Hillslope
    Slope
4%
    Aspect
East
Horizon
Depth (cm)
Description

A11

0–15

Dark greyish brown (7.5YR3/1); sandy loam; massive (structureless); weak consistence when dry; pH 5.0; gradual smooth boundary to:
WLRA - soil pit ALRA65 - profile
Melacic-Basic, Arenic, Bleached-Orthic TENOSOL

A12

15–60

Dark greyish brown (7.5YR3/1); loamy sand; massive (structureless); firm consistence when moderately moist; very few fine soft segregations; pH 5.0; distinct smooth boundary to:

A13

60–120

Dark greyish brown (7.5YR3/1) with common medium greyish brown mechanical mixing from other horizons; loamy sand; massive (structureless); very weak consistence when moderately moist; pH 5.7; gradual smooth boundary to:

A2

120–140+

Light brownish grey (2.5Y6/2); conspicuously bleached (10YR7/2 dry); sand; massive (structureless); very weak consistence when moderately moist; pH 6.0.


Management Considerations:

  • Soil is sandy and deep throughout with minimal pedological development.
  • Sandy soils with high permeability and water drainage capacity.
  • Relatively low clay percentage and low inherent fertility.
  • Deep sandy soil (90% sand for all horizons).
  • Strongly acidic becoming moderately acidic with depth.

Chemical Analysis:

Horizon
Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
dS/m
Exchangeable Aluminium
cmol-/kg
Exchangeable Acidity
cmol-/kg
Phosporus
(Olsen)
mg/kg
Total Nitrogen
Organic Carbon
%
Exchangeable Cations
cmol-/kg
Field Capacity
(pF2.5)
Wilting Point
(pF4.2)
Coarse Sand
%
Fine Sand
%
Silt
%
Clay
%
Ca
Mg
K
Na
Bulk sample
0-15
5.0
4.6
0.15
31
0.23
3.4
A11
0-15
4.9
4.5
0.11
6.1
2.6
2.4
0.83
0.13
0.31
8.1
4.8
47.9
38.0
5.0
3.5
A12
15-60
4.9
4.4
0.05
42
1.0
0.3
0.08
0.17
5.1
3.1
47.6
38.9
5.0
4.5
A13
60-120
5.6
4.9
<0.05
11
0.33
0.34
0.07
0.1
4.6
1.7
53.3
36.8
5.5
2.5
A2
120-140+
5.7
5.2
<0.05
<10
0.18
0.2
0.06
0.08
9.6
0.9
56.2
34.2
5.0
1.5
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