Victorian Resources Online (archived)

SW57

Location: Cooriemungle.

Australian Soil Classification: Humose, Dermosolic, Redoxic HYDROSOL

Site Description: Drained dairy grazing paddock.
General Landscape Description: Flat valley floor in dissected plain.
Geology: Quaternary alluvium derived from Gellibrand Marl and Hanson Plain Sand.
Land Use: Dairy cattle grazing.

SW57 Landscape

Soil Profile Morphology:

Surface Soil

A1	0-20 cm	Very dark brown (10YR2/2); clay loam; weak medium polyhedral structure; weak consistence dry; clear and smooth change to:	SW57 Profile Note: Surface (A1) has been stripped from the soil profile.
Subsoil
B21g	20-90/95 cm	Light brownish grey (10YR6/2), with fine faint brownish yellow (10YR6/8) mottles common; clay loam fine sandy; apedal; weak prismatic structure in upper horizons, becoming weak medium prismatic, parting to medium blocky structure at 70 cm depth; firm consistence dry; pH 5.7; clear change to:
B22g	90/95+cm	Grey (10YR5/1) with many brownish yellow (10YR6/8) mottles; heavy clay; very coarse prismatic (larger at depth) parting to very coarse to coarse blocky structure; very firm consistence dry; trong sulphidic smell i.e. anaerobic.

Key Profile Features:

	pH	Salinity Rating	Sodicity
Subsoil (B21 horizon)	Moderately Acid	Very Low	Non-Sodic

Soil Profile Characteristics:

Horizon	Horizon Depth (cm)	pH (water)	pH (CaCl₂)	EC (dS/m)	Exchangeable Cations
					Ca	Mg	K	Na
					meq/100g
B21g	20-90	5.7	4.9	0.06	2	3	0.08	0.26

Horizon	Horizon Depth (cm)	Exchangeable Aluminium mg/kg	Exchangeable Acidity meq/100g	Coarse Sand (0.2-2.0 mm)	Fine Sand (0.02-0.2 mm)	Silt (0.002-0.02 mm)	Clay (<0.002 mm)


B21g	20-90	58	5.1	3	52	26	21

Management Considerations:

Whole Profile

The soil profile is likely to be saturated for a number of months during most years.

Notes:

An additional subsoil horizon was sampled 10 m east of profile called SW58 to ensure adequate coverage of soil variability at this site.

Profile Described By: Mark Imhof and Richard MacEwan (April 1999).

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