WLRA146

Terrace with lucerne		Site Code	WLRA146
		Location	Landsborough Road, Joel, western Victoria
		Landform	Terrace
		Geology	Quaternary river terrace: fluvial gravel, sand, silt
		Element	Terrace plain
		Slope	<1%
		Aspect	North


Horizon	Depth (cm)
A1	0–10	Brown (10YR4/3); loam, fine sandy; massive (structureless); weak dry consistence; common medium to coarse and fine to very fine roots; pH 6.2; abrupt and smooth boundary to:		Eutrophic, Mesonatric, Brown SODOSOL
A2	10–25	Yellowish brown (10YR5/4), conspicuously bleached very pale brown (10YR7/4 dry); fine sandy clay loam; massive (structureless); very firm dry consistence; common medium to coarse and fine to very fine roots; pH 6.3; abrupt and irregular boundary to:
B21	20–50	Brown (7.5YR4/4); medium heavy clay; moderate medium prismatic, parting to strong fine to medium subangular blocky structure; rough prismatic and smooth subangular blocky ped-fabric; strong dry consistence; common distinct clay skins; common medium to coarse and fine to very fine roots; pH 7.9; gradual and smooth boundary to:
B22	50–65	Yellowish brown (10YR5/4) with many medium distinct strong brown (7.5YR4/6) mottles; light medium clay; weak medium prismatic, parting to moderate fine and very fine subangular blocky structure; rough ped fabric; firm moderately moist consistence; common medium to coarse and few fine to very fine roots; pH 8.9; gradual and smooth boundary to:
B23	65–95	Yellowish brown (10YR5/6) with a few fine faint light grey mottles; medium clay; weak medium subangular blocky structure; rough ped-fabric; strong dry consistence; few fine organic root linings; common medium to coarse roots, few fine to very fine roots; pH 8.9; gradual and smooth boundary to:
B3	95–120	Yellowish brown (10YR5/4); medium clay; moderate fine prismatic parting to moderate fine and very fine subangular blocky structure; rough ped fabric; strong moderately moist consistence; very few organic root linings, common fine manganiferous nodules; few faint slickensides; common medium to coarse and few fine to very fine roots; pH 8.8.
Management Considerations
Strong texture contrast profile, highly sodic subsoil Subsurface horizon is leached (bleached) with restrictive interface with subsoil. Fewer nutrients available Slightly acidic/neutral surface and subsurface soil and alkaline deeper subsoil Note high silt content and higher proportion of magnesium to calcium Deep subsoil is very highly dispersive. Limited (preferably no) exposure required to remain stable. Slightly saline with depth. Surface soil is slightly to moderately dispersive Landscape position (ie. terrace). Variable site drainage

Chemical Analysis:

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	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	NaCl %	Ca	Mg	K	Na	Field Capacity (pF2.5)	Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–10	6.2	5.7	0.16		4.6	0.97	1.7	0.19			6.8	42.1	25.5	18.5
A2	10–25	6.3	5.5	0.1		1.9	1.3	0.25	0.57
B21	20–50	7.9	7.0	0.26	0.03	3.9	8.3	0.6	3.6	31.1	16.4	0.3	19.7	28	49.5
B22	50–65	8.9	8.0	0.43	0.06	2.6	8.8	0.6	5.2
B23	65–95	8.9	8.0	0.43	0.06	2.1	7.6	0.5	5.1
B3	95–120	8.8	8.0	0.54	0.08	2.7	10	0.7	6.9

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