LSWW19

Location: South of Edenhope

General Landscape Description: Plain
Site Description: Plain
Geology: Quaternary swamp and lake deposits: paludal silt and clay


Red gum plains south of Edenhope

A1	0–10	Very dark greyish brown (10YR3/2); sandy loam; moderate coarse subangular blocky, parting to subangular blocky structure; firm consistence when dry; very few subrounded ferruginous nodules; pH 6.0; abrupt boundary to:	Ferric (and Calcic), Mottled-Mesonatric, Brown Sodosol
A21	10–30	Dark greyish brown (10YR4/2) with few orange mottles; loamy sand; sporadically bleached; massive (structureless); very firm consistence when dry; very few ferruginous nodules; pH 6.4; abrupt and wavy boundary to:
A22p	30–45	Uncemented discontinuous nodular ferricrete and manganiferous pan; pH 6.8.
A23	45–50	Yellowish brown (10YR5/4); clayey sand; conspicuously bleached; massive (structureless); weak to very weak consistence when dry; abundant (70%) ferruginous and manganese nodules; pH 6.8; abrupt boundary to:
Subsoil
B21	50–75	Light olive brown (2.5Y5/3) with common faint yellow and distinct red mottles; heavy clay; strong very coarse polyhedral, parting to strong coarse polyhedral structure; very strong consistence when dry; few manganese nodules and flecks; pH 6.8; diffuse transition to:
B22	75–120	Brownish yellow (10YR6/6); heavy clay; strong very coarse prismatic, parting to strong coarse polyhedral structure; dispersive when worked; pH 8.0; diffuse boundary to:
B23	120–170+	Brownish yellow (10YR6/6) with red mottling common in patches, other mottling is associated with ferruginised sandstone; heavy clay; strong very coarse prismatic, parting to strong coarse polyhedral structure; pH 8.8.

Horizon	Horizon Depth (cm)	pH (water)	pH (CaCl2)	EC dS/m	Exchangeable Cations				Coarse Sand (0.2-2.0 mm) %	Fine Sand (0.02-0.2 mm) %	Silt (0.002-0.02 mm) %	Clay (<0.002 mm) %	Wilting Point % w/w
					Ca	Mg	K	Na
					meq/100g
A1	0–10	6.0	4.9	<0.05	2	1.2	0.4	0.3	31.6	39.9	11.5	13	6.7
A21	10–30	6.4	5.0	<0.05	1	0.4	0.1	0.1	32.9	46.6	11	8	2.8
A22p	30–45	6.8	6.1	<0.05
A23	45–50	6.8	5.4	<0.05	1.2	1.1	0.1	0.3	32.8	41.6	10.5	14	5.2
B21	50–75	6.8	5.5	0.06	6.2	8.5	0.4	2.8	5.6	6.8	2	79	28.7
B22	75–120	8.0	7.0	0.18	6.9	11	0.3	4
B23	120–170+	8.8	7.9	0.29

• Strong texture contrast between surface (top)soil and subsoil
• Acid surface soil, susceptible to sheet and rill erosion
• Bleached A2 horizon, low nutrient levels, including a Ferric ‘ironstone’ pan
• Subsoil is neutral becoming alkaline and sodic becoming strongly sodic with depth
• Mottled subsoil
• Plant Available Water Capacity (PAWC) is considered to be high (estimated at 150 mm) for this site profile based on an Effective Rooting Depth (ERD) of 75 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.