Victorian Resources Online (archived)
HOR2
| HOR2 | |||
|
Location | Lower Norton, western Victoria | |||
|
Landform | Gently Undulating Plain | |||
|
Geology | Pliocene Parilla Sand: marine sand and silt | |||
|
Element | Summit surface | |||
|
Aspect | 3 % | |||
Horizon | Depth (cm) | Description | ||
A1 | 0–10 | Dark brown (10YR3/3); loamy sand; weak platy to single grain (structureless); weak consistence; abundant ferruginous concretions and sandstone; pH 5.9; sharp boundary to: | ||
A2 | 10–15 | Brownish yellow (10YR6/6); bleached white (10YR8/1 dry); loamy sand; single grain (structureless); very weak dry consistence; abundant ferruginous concretions and sandstone; pH 8.2; sharp boundary to: | ||
B21 | 15–75+ | Red (2.5YR5/6) with many coarse distinct (7.5YR5/6) mottles; medium clay; very strong consistence, slightly moist; pH 8.0. | ||
B23k | 100–120 | Light yellowish brown (2.5Y6/4) with many distinct fine (5YR4/6) mottles; medium clay; weak to moderate medium polyhedral structure; smooth ped-fabric; strong consistence, moderately moist; few fine to medium ferro-manganiferous concretions with common extremely coarse calcareous soft segregations; common distinct slickensides and clay skins; pH 9.2; clear and wavy boundary to: | ||
B3k | 120–145+ | Light yellowish brown (2.5Y6/3) with few distinct fine (5YR4/4) mottles; medium heavy clay; weak medium polyhedral structure; smooth ped-fabric; firm moist consistence; many fine manganiferous and coarse ferro-manganiferous concretions/nodules with few corse calcareous soft segregations; few distinct slickensides and clay skins; very strongly cemented broken nodular ferricrete pan; pH 9.2. | ||
Horizon | Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl % | Exchangeable Cations cmol-/kg | Field Capacity (pF2.5) | Wilting Point (pF4.2) | |||
Ca | Mg | K | Na | ||||||||
A1 | 0–10 | 5.9 | 4.7 | 0.01 | 1.0 | 0.3 | 0.1 | 0.0 | 5.6 | 3.2 | |
A2 | 10–15 | 8.2 | 7.5 | 0.10 | 0.02 | 1.3 | 1.2 | 0.1 | 0.7 | 7.8 | 2.3 |
B21 | 15–75+ | 8.0 | 7.1 | 0.25 | 0.00 | 2.9 | 7.2 | 0.4 | 2.8 | 22.3 | 15.3 |
Management Considerations:
- Texture contrast soil, sodic and at depth.
- Leached sub surface horizon.
- Alkaline subsoil with coarse structure, roots confined to coarse structure.
- Many ferruginous nodules/sandstone in deep subsoil.
- Imperfect to slow subsoil drainage; clayey, coarse structure, highly dispersive, may be vertic at depth.
- Moderate to high susceptibility to soil structure decline.
- Moderate to high susceptibility to soil compaction, subsurface and upper subsoil.
- Landscape position, long lower slope.
