LS25

WLRA - soil pit LS25- landscape
Lower slope of dune on gently undulating plain

Site Code

LS25

Hypercalcic, Subnatric, Red Sodosol (sandy)

Location

Propodollah, western Victoria

Landform

Dune within sand plain

Geology

Pliocene Parilla Sand: marine sand and silt

Element

Duneslope

Horizon

Depth (cm)

Description

0–20

Dark brown (7.5YR3/4); loamy sand; massive (structureless); weak consistence (dry); pH 6.6.

20–30

Yellowish red (5YR4/6); sand; massive (structureless); firm consistence (dry); pH 6.5.

B21

30–70

Yellowish red (5YR5/8); heavy clay; strong coarse columnar (with bleached cemented capping), parting to strong coarse blocky
structure; very strong consistence dry; pH 8.6.

B22k

35–65

Brown yellow (10YR6/8) with (2.5YR4/8) mottles; light medium clay; weak columnar structure; strong consistence (dry); common soft calcareous segregations; pH 9.3.

Management Considerations

Distinctive texture contrast between sandy surface (A) horizons and clay (B) subsoil.
Light surface texture is highly susceptible to wind erosion.
Strong coarse columnar structure with bleached capping at top of subsoil, restricting water and gas movement.
Neutral surface soil over alkaline subsoil which may well decrease as it grades into weathered sandstone material.
Duneslope element, moderate site drainage (receiving and distributing drainage).

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Lower slope of dune on gently undulating plain		Site Code	LS25	Hypercalcic, Subnatric, Red Sodosol (sandy)
		Location	Propodollah, western Victoria
		Landform	Dune within sand plain
		Geology	Pliocene Parilla Sand: marine sand and silt
		Element	Duneslope


Horizon	Depth (cm)	Description
A1	0–20	Dark brown (7.5YR3/4); loamy sand; massive (structureless); weak consistence (dry); pH 6.6.
A2	20–30	Yellowish red (5YR4/6); sand; massive (structureless); firm consistence (dry); pH 6.5.
B21	30–70	Yellowish red (5YR5/8); heavy clay; strong coarse columnar (with bleached cemented capping), parting to strong coarse blocky structure; very strong consistence dry; pH 8.6.
B22k	35–65	Brown yellow (10YR6/8) with (2.5YR4/8) mottles; light medium clay; weak columnar structure; strong consistence (dry); common soft calcareous segregations; pH 9.3.
Management Considerations
Distinctive texture contrast between sandy surface (A) horizons and clay (B) subsoil. Light surface texture is highly susceptible to wind erosion. Strong coarse columnar structure with bleached capping at top of subsoil, restricting water and gas movement. Neutral surface soil over alkaline subsoil which may well decrease as it grades into weathered sandstone material. Duneslope element, moderate site drainage (receiving and distributing drainage).