Location: Korumburra South
Australian Soil Classification: Acidic, Mesotrophic, Grey DERMOSOL.
Great Soil Group: brown podzolic
Northcote Factual Key: Gn 4.51
Soil Map Unit: Strzelecki
General Landscape Description: Upper slope of hillslope (15% slope).
Site Description: Roadside cutting near Korumburra South.
Geology: Cretaceous sediments.
Native Vegetation: Includes Manna Gum (Eucalyptus viminalis), Blue Gum (E. globulus), Blackwood (Acacia melanoxylon) and Swamp Paperbark (M. ericifolia).
SG6 Landscape |
Surface Soil | SG6 Profile | ||
A1 | 0-35 cm | Dark brown (10YR4/3); light fine sandy clay loam; firm surface condition; moderate fine polyhedral structure; weak consistence moist; pH 5.7; gradual change to: | |
Subsoil | |||
B1 | 35-55 cm | Brown (10YR5/3); light fine sandy clay loam; weak medium blocky, parting to moderate fine blocky structure; weak consistence moist; pH 5.4; clear change to: | |
B2 | 55-85 cm | Greyish brown (10YR5/2); fine sandy clay loam; moderate medium subangular blocky structure; weak consistence moist; pH 5.6; sharp and wavy change to: | |
C | 85+ cm | Weathering sediments. |
pH | Salinity Rating | Sodicity | |
Surface (A1 horizon) | Moderately Acid | Very Low | Non-Sodic |
Subsoil (B21 horizon) | Strongly Acid | Very Low | Non-Sodic |
Deeper subsoil (at 75-100 cm) | Moderately Acid | Very Low | Non-Sodic |
The pH ranges between moderate to strongly acid throughout the soil profile. | The salinity rating is very low throughout the profile. | The exchangeable aluminium level increases with depth. | The clay % increases gradually with depth. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC ds/m | Organic Carbon % | Nitrogen % | Exchangeable Cations | Exchangeable Aluminium mg/kg | Exchangeable Acidity meg/100g | Field Capacity pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.02 -0.2mm) | Fine Sand (0.02 -0.2mm) | Silt (0.02 -0.2mm) | Clay (<0.002mm) | |||
Ca | Mg | K | Na | |||||||||||||||
meg/100g | ||||||||||||||||||
A1 | 0-35 | 5.7 | 4.5 | 0.06 | 2.0 | 0.17 | 1.9 | 1.5 | 0.1 | 0.2 | 90 | 11.5 | 27.3 | 8.1 | 7.8 | 40.0 | 29.0 | 18.0 |
B1 | 35-55 | 5.4 | 4.3 | 0.08 | 1.0 | 1.0 | 0.1 | 0.2 | 140 | 10.0 | 24.9 | 7.2 | 7.8 | 40.0 | 31.5 | 19.0 | ||
B21 | 55-85 | 5.6 | 4.1 | 0.05 | 0.8 | 1.5 | 0.1 | 0.2 | 250 | 10.3 | 24.3 | 9.6 | 7.5 | 39.6 | 26.5 | 25.0 |