WLRA66

WLRA - soil pit WLRA66- landscape
Lower alluvial terrace and river floodplain

Site Code

WLRA66

Location

Joel, western Victoria

Landform

Alluvial plain

Geology

Quaternary Coonambidgal Formation: fluvial to lacustrine clays and sands

Element

Terrace

Slope

West

Aspect

Horizon

Depth (cm)

Description

0–8

Dark brown to brown (7.5YR4/3); loamy sand; weak fine subangular blocky structure; rough ped-fabric; very weak consistence when dry; pH 6.0; abrupt boundary to:

A21

8–35

Light brown (7.5YR6/4); conspicuously bleached (7.5YR7/4 dry); loamy sand; single grain , occasionally massive (structureless); earthy ped-fabric; very weak consistence when dry; pH 6.5; gradual boundary to:

A22

35–65

Very pale brown (10YR7/4); conspicuously bleached (10YR8/3 dry); loamy sand, silty; single grain, occasionally massive (structureless); earthy ped-fabric; weak consistence when dry; pH 7.2; sharp boundary to:

B21

65–110

Light yellowish brown(10YR6/4) with many coarse (7.5YR5/4) mottles; sandy loam, heavy; massive (structureless); earthy ped-fabric; very firm consistence when slightly moist; pH 8.5; gradual boundary to:

B22

110–120+

Light yellowish brown (10YR6/4) with common medium faint (10YR5/4) mottles; loam, fine sandy; massive (structureless); earthy ped-fabric; very firm consistence when slightly moist; pH 9.0

Management considerations

Gradational texture change with depth. Occasionally texture contrast. Light textures, well drained to subsoil.
Slightly acidic surface grading to neutral and alkaline with depth.
Surface soil has protective organic matter content, still slightly susceptible to sheet and rill erosion.
Subsurface horizons bleached, susceptible to sheet and rill erosion.
Subsoil likely to be sodic and dispersive. Imperfectly to moderately well drained.

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Lower alluvial terrace and river floodplain		Site Code	WLRA66
		Location	Joel, western Victoria
		Landform	Alluvial plain
		Geology	Quaternary Coonambidgal Formation: fluvial to lacustrine clays and sands
		Element	Terrace
		Slope	West
		Aspect
Horizon	Depth (cm)	Description
A1	0–8	Dark brown to brown (7.5YR4/3); loamy sand; weak fine subangular blocky structure; rough ped-fabric; very weak consistence when dry; pH 6.0; abrupt boundary to:
A21	8–35	Light brown (7.5YR6/4); conspicuously bleached (7.5YR7/4 dry); loamy sand; single grain , occasionally massive (structureless); earthy ped-fabric; very weak consistence when dry; pH 6.5; gradual boundary to:
A22	35–65	Very pale brown (10YR7/4); conspicuously bleached (10YR8/3 dry); loamy sand, silty; single grain, occasionally massive (structureless); earthy ped-fabric; weak consistence when dry; pH 7.2; sharp boundary to:
B21	65–110	Light yellowish brown(10YR6/4) with many coarse (7.5YR5/4) mottles; sandy loam, heavy; massive (structureless); earthy ped-fabric; very firm consistence when slightly moist; pH 8.5; gradual boundary to:
B22	110–120+	Light yellowish brown (10YR6/4) with common medium faint (10YR5/4) mottles; loam, fine sandy; massive (structureless); earthy ped-fabric; very firm consistence when slightly moist; pH 9.0
Management considerations
Gradational texture change with depth. Occasionally texture contrast. Light textures, well drained to subsoil. Slightly acidic surface grading to neutral and alkaline with depth. Surface soil has protective organic matter content, still slightly susceptible to sheet and rill erosion. Subsurface horizons bleached, susceptible to sheet and rill erosion. Subsoil likely to be sodic and dispersive. Imperfectly to moderately well drained.