LSWW11

Crest of a low rise near Minimay		Site Code	LSWW11	Hypercalcic, Mottled-Hypernatric, Brown SODOSOL
		Location	West of Booroopki Swamp, western Victoria
		Landform	Rise
		Geology	Quaternary Woorinen Formation: aeolian dune sand, calcareous clay
		Element	Hillcrest




Horizon	Depth (cm)	Description
A1	0–20	Dark brown (10YR3/3); loamy sand; massive (structureless); weak consistence when dry; pH 6.1.
A2	20–25	Pale brown (10YR6/3); loamy sand; conspicuously bleached; massive (structureless); weak consistence when dry; discontinuous horizon; pH 6.9; sharp boundary to:
B21	25–65	Brown (10YR4/3) with many coarse distinct yellowish brown and red mottles, colour changes to strong brown (7.5YR5/6) at depth and mottle abundance decreases; medium heavy clay; strong very coarse columnar, parting to moderate very coarse blocky structure; very strong consistence when dry (complete dispersion); pH 7.5.
B22k	65–100	Pink (7.5YR7/4) with common fine distinct reddish yellow mottles; medium clay, fine sandy; moderate coarse prismatic, parting to coarse blocky structure; many (40%) soft calcareous segregations, and a few (5%) hard silica/carbonate nodules; strong dispersion; horizon is discontinuous, with the carbonate forming large patches in places; pH 9.6.
B23	100–130	Reddish yellow (7.5YR7/6) with common yellowish red mottles; medium clay, coarse sandy; pH 9.7.
BC	130–180+	Partially weathered sandstone; pH 9.5.
Management Considerations
Sandy and hydrophobic topsoil Strong texture contrast between topsoil and subsoil Bleached A2 horizon, fewer nutrients available Alkaline subsoil decreasing slightly at depth. Strongly sodic and dispersive clay subsoil. Coarse columnar structure in upper subsoil Mottled subsoil indicating restrictive drainage Weathered sandstone comes in at around 130 cm Plant Available Water Capacity (PAWC) is considered to be low (estimated at 50 mm) for this site profile based on an Effective Rooting Depth (ERD) of 25 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 (eg. massive or very coarse, columnar or prismatic), very high carbonate (lime) content (not applicable to all plant species) or hard rock. Landform is a gentle hill crest, slightly water shedding; moderate site drainage

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	Exchangeable Cations cmol-/kg				Wilting Point (pF 4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	Ca	Mg	K	Na	Wilting Point (pF 4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–20	6.1	5.6	0.12		2.5	0.9	0.3	0.3	8.5	42.2	38.2	4.5	8
A2	20–25	6.9	6.4	<0.05
B21	25–65	7.5	6.6	0.25		4.1	8.1	0.4	4.7	19.4	27.4	22.4	3.5	40.5
B22k	65–100	9.6	9.0	0.53	<0.05	3.8	12	0.5	7.3	16.7	31.5	23.2	3	35
B22k	65–100	9.8	8.7	0.49	<0.05
B23	100–130	9.7	9.0	0.52	<0.05
BC	130–180+	9.5	8.6	0.29

Page top