HUME215

Location: Omeo South

Australian Soil Classification: Eutrophic, Subnatric, Yellow SODOSOL

Map Unit: Omeo (Component 1)
Previous Site Name: 215

General Landscape Description: Undulating low hills
Site description:
Land Use: Grazing on annual pasture
Native Vegetation: Montane grassy woodland
Geology: Palaeozoic granite

Horizon	Horizon Depth (cm)	pH (water)	EC dS/m	Organic Carbon %	Total Nitrogen %	Free Fe2O3 % w/w	Exchangeable Acididty meq/100g	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) %
								Ca	Mg	K	Na
								meq/100g
A1	0-8	5.6	0.05	1.7	0.15	1.0	7.4	4.6	1.7	0.4	0.1	27	26	24	20
A2	15-30	6.0	<0.05	0.2	0.02	0.8	2.9	1.3	0.6	0.1	0.05	39	36	16	7
B21	30-60	6.5	0.08			2.9	20.5	3.7	12.4	0.3	1.9	16	15	7	61
B22	90-120	8.4	0.16			1.8		3.3	9.5	1.9	2.8	41	31	12	17

• The soils are moderately acid but may show a slight response to lime applications.
• The potassium levels are moderate and no response to potassium fertilisers would be expected.
• Salinity is not a problem in the surface soil.
• The nutrient holding capacity of the surface (A1 and A2) horizons is low to very low (based on the sum of the exchangeable calcium, magnesium, potassium and sodium cations).

• The coarsely structured and high clay subsoil is sodic with very low calcium to magnesium ratio of 0.3. Water and root movement in the subsoil will be restricted by these conditions.
• This soil is highly prone to water erosion.