LSWW07

Gentle plains near Lillimur South				Hypercalcic, Mottled-Subnatric, Grey SODOSOL
		Location	Kaniva South Road, Lillimur South, western Victoria
		Landform	Plain
		Geology	Quaternary Lowan Formation: aeolian fine to medium grained dune sand
		Element	Plain




Horizon	Depth (cm)	Description
A1	0–10	Very dark greyish brown (10YR3/2); light fine sandy loam; pH 6.1:
A2	10–12	Conspicuously bleached hard setting sand that tends to occur in patches, as domed capping on top of columnar subsoil structure:
B21	12–30	Light greyish brown (10YR6/2) with a few faint brownish yellow mottles; medium clay (sandy); strong very coarse columnar structure; very strong consistence when dry (completely dispersive); pH 8.6:
B22	30–50	Very pale brown (10YR7/3) with a few faint yellow mottles; medium clay (sandy); strong very coarse columnar structure; strongly dispersive; pH9.3:
B23	50–100	Very pale brown (10YR7/3) with yellow and reddish yellow mottles; medium clay (sandy); many soft calcareous segregations and very few hard calcareous nodules; completely dispersive; pH 10:
B24	100–190+	Light grey (5Y7/2); medium clay (sandy); moderate coarse polyhedral structure; smooth ped-fabric; few soft and hard calcareous segregations; manganese flecks occur at depth; pH 9.9.
Management Considerations
Strong texture contrast between topsoil and subsoil Shallow topsoil Bleached A2 horizon B21 and B22 horizons have large hard setting columnar structure Sodic subsoil Strongly dispersive mottled subsoil Acidic topsoil and highly alkaline subsoil Plant Available Water Capacity (PAWC) is considered to be very low (estimated at 15 mm) for this site profile based on an Effective Rooting Depth (ERD) of 12 cm. Rooting depth will be restricted by subsoil conditions, such as; strongly sodic (Exchangeable Sodium Percentage >20%), high soluble salt levels (chloride >0.1%), poor structure (e.g. massive or very coarse, columnar or prismatic), very high carbonate (lime) content (not applicable to all plant species) or hard rock. Soil cracks when dry, vertic (expansive clay material) Plain, poor site drainage

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	Exchangeable Cations cmol-/kg				Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	Ca	Mg	K	Na	Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–10	6.1	5.1	0.09		2.4	1.7	0.5	0.5	8.4	26.1	48.4	3.5	15
A2	10–12									15.3
B21	12–30	8.6	7.7	0.16		6.7	6.9	1.3	1.9	15.5	20.5	37.6	3	34
B22	30–50	9.3	8.4	0.22		7.4	7.5	1.3	2.4		23.4	36.8	2	30.5
B23	50–100	10	9	0.52		1.5	8.4	1.1	7.1
B24	100–190+	9.9	9	0.47	<0.05

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