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HOR4

    Site Code
HOR4

    Location

South Wonwondah, western Victoria

    Landform

Plain

    Geology

Quaternary Shepparton Formation: fluvial silt, sand and minor gravel

    Element

Flat

    Aspect

0
Horizon
Depth (cm)
Description

A1

0–15

Greyish brown (10YR5/2); light clay; subplastic; cracking and slightly self-mulching surface condition; moderate coarse subangular blocky structure; very strong consistence (dry); pH 6.5; clear change to

B2

15–70+

Grey (10YR5/1); heavy clay; subplastic; moderate very coarse prismatic structure; very strong consistence drypH 7.6.
Management considerations
  • Cracking clay profile, high clay percentage
  • Neutral thin surface soil and subsoil, alkaline at depth
  • Structured surface, occasional self mulching feels lighter than lab data suggests (subplastic)
  • Subsoil is sodic and may be strongly sodic at depth Subsoil does disperse; highly dispersible.
  • Cracking may allow air and seasonal moisture to penetrate
  • Very strong consistence when dry, implications for compaction and implement use
  • Landform element, flat: poor site drainage


Site
HOR4
Sample depth cm
pH
EC
dS/m
NaCl
%
Ex Ca
cmol-/kg
Ex Mg
cmol-/kg
Ex K
cmol-/kg
Ex Na
cmol-/kg
ESP
N
Oxidised Organic C
7.8FC
-30okPa
2.7PWP
-1500okPa
NAKS
%
NAFS
%
NA Z
%
NAC
%
Horizon
H2O
CaCl2
A1
0–15
6.5
NA
0.04
NA
8.9
6.4
0.5
1.0
NA
NA
27.3
19.3
NA
NA
NA
NA
B2
15–70+
7.6
NA
0.09
0.2NA
10.1
8.8
0.8
2.6
NA
NA
35.0
15.4
NA
NA
NA
NA
Note: NA=not assessed
CC BY 4.0 AU

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The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

This material is presented in an archived form and is no longer maintained or updated. It is provided for general information only and should not be relied upon as current advice.

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