HOR1

Site Code

HOR1

Location

Lower Norton, western Victoria

Landform

Gently Undulating Plain

Geology

Pliocene Parilla Sand: marine sand and silt

Element

Crest

Aspect

1 %

Horizon

Depth (cm)

Description

0–10

Dark brown (7.5YR3/4); loamy sand; weak platy structure; weak consistence; few ferruginous concretions and sandstone; pH 6.0; sharp boundary to:

B21

10–70

Red (2.5YR5/6); sandy clay loam; strong slightly moist consistence; pH 7.2.

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 moderately moist consistence; few fine to medium ferromanganiferous concretions with common extremely coarse calcareous soft segregation's; common distinct slickensides and clay skins; field 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 ferromanganiferous concretions/nodules with few coarse calcareous soft segregation's; few distinct slickensides and clay skins; very strongly cemented broken nodular ferricrete pan; field pH 9.2.

Chemical and Physical Analysis:

Horizon

Depth
(cm)

pH
(water)

pH
(CaCl₂)

EC
dS/m

NaCl
%

Exchangeable Cations
cmol-/kg

Field Capacity
(pF2.5)

Wilting Point
(pF4.2)

0-10

6.0

5.3

0.09

2.9

1.5

0.2

0.0

7.8

2.7

B21

10-70+

7.2

6.2

0.25

0.05

2.9

7.2

0.4

2.8

19.3

8.4

Management Considerations

Texture contrast soil, sodic and at depth.

Neutral to alkaline subsoil with coarse structure, roots confined to coarse structure.

Few (variable) 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 (loose surface).

Landscape position; crest, well drained site drainage.

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