WLRA141

Footslopes of texture contrast soils		Site Code	WLRA141	Eutrophic, Mottled-Subnatric, Brown SODOSOL
		Location	Shays Flat-Malakoff Road, Landsborough, western Victoria
		Landform	Rolling low hills
		Geology	Palaeozoic (Cambrian) Warrak Formation: marine sandstone, siltstone, schist
		Element	Footslope
		Slope	5%
		Aspect	North


Horizon	Depth (cm)	Description
A1	0–15	Brown (7.5YR4/4); sandy clay loam; weak coarse subangular blocky; rough ped-fabric; weak dry consistence; very few small subrounded quartz gravels; many very fine and fine roots; water repellent; pH 5.1; clear and wavy boundary to:
A21	15–30	Brown (7.5YR4/4), conspicuously bleached light brown (7.5YR6/4); loamy sand; massive (structureless) very weak dry consistence; few small subrounded quartz gravels; common very fine and fine roots; pH 4.9; gradual and smooth boundary to:
A22	30–55	Light yellowish brown (10YR6/4), conspicuously bleached very pale brown (10YR8/4); sandy clay loam; massive (structureless) weak dry consistence; few small subrounded quartz gravels; few medium ferromanganiferous nodules; few very fine and fine roots; pH 6.6; sharp and smooth boundary to:
B21	55–90	Brown (10YR4/3) with many medium distinct dark reddish brown (2.5YR3/4) mottles; medium heavy clay; strong coarse to very coarse prismatic, parting to strong coarse to medium angular blocky structure; rough and smooth ped-fabric; very firm moderately moist consistence; very few medium manganiferous nodules; few prominent clay skins; few very fine and fine roots; pH 7.4; gradual and smooth boundary to:
B22	90–125+	Dark yellowish brown (10YR4/4) with common medium faint reddish brown and many medium dark red (2.5YR3/6) mottles; light clay; massive (structureless); strong moderately moist consistence; very few medium manganiferous nodules; no roots; pH 7.8.
Management Considerations
Texture contrast soil, relatively deep surface soil (some subsurface water lateral flow) Strongly acidic surface soil, neutral to alkaline subsoil Slightly sodic subsoil (subnatric) Dispersive deep subsoil; high susceptibility for tunnel and gully erosion if disturbed Red mottled, some air and water movement restrictions in subsoil Landscape position; water receiving and shedding, developed profile

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exch. Al mg/kg	Exchangeable Cations cmol-/kg				Field Capacity (pF2.5)	Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exch. Al mg/kg	Ca	Mg	K	Na	Field Capacity (pF2.5)	Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–15	5.1	4.5	0.06	22	1.2	0.43	0.41	0.05	18.1	5.3	7.4	68.2	7	14
A21	15–30	4.9	4.4	<0.05	31	0.81	0.26	0.17	<0.05	16.3	3.7	8.7	71.4	8.5	8
A22	30–55	6.6	5.9	<0.05
B21	55–90	7.4	6.4	0.07		7.1	5.7	0.9	1.1	33.8	19.6	1.4	28.4	14	51.5
B22	90–125+	7.8	6.8	0.08		4.4	4.9	0.55	0.87	26.9	13	3.5	44.1	8.5	40.5

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