WLRA129

Long undulating cropped plain		Site Code	WLRA129	Bleached-Sodic, Eutrophic, Red Dermosols
		Location	Jeparit Road, Peppers Plains, western Victoria
		Landform	Undulating plain
		Geology	Quaternary Woorinen Formation: aeolian dune sand, calcareous clay
		Element	Rise crest
		Slope	2–3% North-west

Horizon	Depth (cm)	Description
A11	0–5	Dark reddish brown (5YR3/2); sandy loam; medium to very fine moderate polyhedral structure; rough ped fabric; very weak consistence, dry; pH 7.5; smooth and sharp change to:
A12	5–10	Dark reddish brown (5YR3/2); sandy clay loam; massive (structureless); earthy ped fabric; very firm consistence, dry; moderately cemented cultivation pan; pH 7.0; abrupt and wavy change to:
B21	10–25	Reddish brown (5YR4/4); light clay; medium to coarse strong prismatic structure; rough ped fabric; very strong consistence dry; moderately calcareous; contains very few fine manganiferous nodules; common distinct cutans evident; pH 8.8; gradual and wavy change to:
B22k	25–75	Light brown (7.5YR6/4) with a few medium faint red mottles; light clay, sandy; coarse weak polyhedral structure; rough ped fabric; firm consistence dry; very many extremely coarse calcareous soft segregations and very few medium argillaceous tubules present; very highly calcareous: pH 9.3; smooth and gradual change to:
B3k	75–115	Yellowish red (5YR5/6); light clay; massive (structureless); earthy fabric; firm consistence, moderately moist; many very coarse calcareous soft segregations and very few medium argillaceous tubules; very highly calcareous; pH 9.9; clear and wavy change to:
2B2k	115–145	Light brown (7.5YR6/4) with common medium faint red mottles; sandy clay loam; coarse weak polyhedral structure; rough ped fabric; firm consistence, moderately dry; contains common coarse calcareous soft segregations, a few fine manganiferous flecks and very few medium argillaceous tubules; very highly calcareous; pH 10.1; diffuse and smooth change to:
2C	145–160+	Light brown (7.5YR6/4); clay loam, coarse sandy; massive (structureless); earthy ped-fabric; moderate consistence when moderately moist; very highly calcareous; many very coarse faint red and very pale brown mottles; few fine manganiferous flecks and few medium calcareous soft segregations; pH 10.0.
Management Considerations
Moderate to high susceptibility to wind erosion. Alkaline subsoils with calcareous soft segregations, manganese flecks and argillaceous (clayey) tubules. Minor subsoil constraint >75 cm as mottling indicates slightly imperfect drainage. Possible plough pan (510 cm). Moderately structured surface with very weak resistance to breaking down makes it vulnerable to wind erosion without stubble and trash retention. Poorer structure and increased dispersibility of subsoil.

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exchangeable Cations cmol-/kg
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Ca	Mg	K	Na
A11	0–-5	7.5	7.1	0.14	8	3.1	1.7	0.14
A12	5–10	7.4	6.9	0.09	9.1	3.7	1.3	0.18
B21	10–25	8.8	8.2	0.15	26	7	1.3	0.29
B22K	25–75	9.3	8.6	0.17	22	9.2	1.3	0.98
B3K	75–115	9.9	9.6	0.45	2.7	11	2	5.4
2B2	115–145	10.1	9.0	0.55	2	8.3	1.5	6.3
2C	145–160+	10.0	9.3	0.54	1.7	6.6	1.4	6.3

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