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DOAHG5

WLRA - soil pit DOAHG5- landscape
Upperslope of hillslope
    Site Code
DOAHG5


    Location

Halls Gap, western Victoria

    Landform

Hillslope

    Geology

Quaternary Alluvium & Colluvium: gravel, sand, silt

    Element

Midslope
Horizon
Depth (cm)
Description

A1

0–15

Dark greyish brown (10YR4/2); loamy sand; massive (structureless); hard setting; weak consistence (dry); friable (moist); very few ferruginous concretions; pH 6.3; sharp boundary to:

A2

15–30

Brownish yellow (10YR6/6); conspicuously bleached (10YR7/4d) loamy sand; massive (structureless); hard setting; very weak consistence (dry); friable (moist); very few ferruginous concretions; pH 7.8; sharp boundary to:

B21

30–60

Yellowish brown (10YR5/8) with red (2.5YR4/6) mottles; medium clay (sandy); moderate fine and medium subangular blocky structure; smooth ped-fabric; weak consistence (dry); friable (moist); few ferruginous concretions; pH 6.0; clear boundary to:

B22

60–90

Yellowish brown (10YR5/8) with red (2.5YR4/6) and light yellowish brown (10YR6/4) mottles; medium clay; sandy; moderate fine and medium subangular blocky structure; smooth ped-fabric; firm consistence(dry); friable (moist); common ferruginous concretions; pH 6.3; gradual boundary to:

B23/B3

90–100

Yellowish brown (10YR5/8) with light grey (2.5Y7/2) and dark red (2.5YR3/6) mottles; medium clay; sandy; moderate fine and medium subangular blocky structure; smooth ped-fabric; firm consistence (dry); friable (moist); common ferruginous concretions; pH 6.3.
Management considerations
  • Strong texture contrast soil, generally slightly acidic. Alkaline subsurface soil
  • Relatively leached subsurface soil, less nutrients, but drainage not restrictive until subsoil (texture and mottling)
  • Increase in sodium and magnesium at depth and decreases calcium; more likely to be dispersive
  • Generally low to moderate nutrient availability.
  • Landscape element; hillslope. Position will often determine depth to variable depth weathered parent material
Site
DOAHG5
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
cmol-/kg
Ex acidity
cmol-/kg
FC
-30okPa
PWP
-1500okPa
KS
%
FS
%
Z
%
C
%
Horizon
H2O
CaCl2
A1
0–15
6.3
NA
0.03
NA
2.1
0.5
0.3
0.2
NA
NA
11.5
5.1
NA
NA
NA
2.40
A2
15–30
7.8
NA
0.16
0.01
1.8
0.5
0.1
0.1
NA
NA
10.5
6.2
NA
NA
NA
NA
B21
30–60
6.0
NA
0.05
NA
1.4
2.1
0.2
0.1
NA
NA
19.4
15.1
NA
NA
NA
NA
B22
60–90
6.3
NA
0.05
NA
0.9
4.1
0.2
0.3
NA
NA
27.3
22.5
NA
NA
NA
NA
B23/B3
90–100
6.3
NA
0.06
NA
0.6
4.4
0.2
0.4
NA
NA
27.9
23.0
NA
NA
NA
NA

Note: NA=not assessed
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