WLRA15

Long undulating cropped plains		Site Code	WLRA15
		Location	Jeparit East Road, western Victoria
		Landform	Undulating plain
		Geology	Quaternary Woorinen Formation: aeolian dune sand, calcareous clay
		Element	Hillslope
		Slope	2%
		Aspect	South
Horizon	Depth (cm)	Description
A1	0–5	Dark brown (7.5YR4/3); fine sandy loam; strong fine polyhedral structure; rough-ped fabric; weak consistence when dry; highly calcareous; pH 9.0; clear boundary to:
A3	5–22	Dark brown (7.5YR4/3); fine sandy clay; weak to moderate medium to fine angular blocky structure; rough-ped fabric; weak consistence when dry; moderately calcareous; few calcareous segregations; pH 9.5; clear boundary to:
B1	22–40	Yellowish red (5YR5/6); light clay; moderate fine subangular blocky structure; rough-ped fabric; weak consistence when slightly moist; highly calcareous; pH 9.5; clear boundary to:
B21	40–65	Yellowish red (5YR5/6); light medium clay; moderately fine angular blocky structure; rough and smooth-ped fabric; firm consistence when slightly moist; highly calcareous; very few fine calcareous soft segregations and few distinct mangans; pH 9.5; gradual boundary to:
B22	65–103	Reddish yellow (7.5YR6/6) with many very coarse prominent (2.5YR4/6) mottles; light medium clay; moderate to strong medium angular blocky, parting to fine subangular blocky structure; rough and smooth-ped fabric; firm consistence when slightly moist; highly calcareous; very few calcareous soft segregations and few faint mangans; pH 9.5; gradual boundary to:
B23	103–125+	Pale brown (10YR6/3) with common very coarse prominent (2.5YR4/6) mottles; medium clay; moderate to strong medium angular blocky, parting to fine subangular blocky structure; rough and smooth-ped fabric; firm consistence when slightly moist; highly calcareous; very few calcareous soft segregation's and few faint mangans; pH 9.5.
Management considerations
High susceptibility to wind erosion Alkaline subsoils with calcareous soft segregations, manganese coatings (mangans). Minor subsoil constraint >65 cm as mottling and soil colour indicates slightly imperfect drainage. Lighter surface soil with strong fine structure with weak resistance to breaking down makes it vulnerable to wind erosion without stubble and trash retention. Possible slight to moderate soil structure decline susceptibility due to poorer structure and dispersibility in the subsoil. Landform element, duneslope; moderate to well-drained site drainage.

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