Location: Dimboola East
Australian Soil Classification: Endohypersodic, Self-Mulching, Black VERTOSOL
General Landscape Description: Level plain with subdued ridges.
Site Description: Cropping stubble.
Geology: Neogene (Tertiary).
Native Vegetation: Savannah Woodland.
Soil Profile Morphology:
Surface Soil
Ap | 0-20 cm | Very dark greyish brown (10YR3/2); light clay; weak fine blocky structure; weak consistence moist; pH 8.2; sharp change to: | |
Subsoil | |||
B21 | 20-55 cm | Very dark grey (10YR3/1); light clay; weak medium blocky structure; pH 8.0; sharp change to: | |
B31 | 55-85 cm | Dark brown (10YR3/3); medium clay; weak coarse blocky structure; pH 8.2; sharp change to: | |
B32 | 85-120 cm | Dark yellowish brown (10YR4/4); medium clay; weak fine blocky structure; contains very few carbonate nodules; pH 8.7. | |
pH | Salinity Rating | ||
Surface (A1 horizon) | Moderately Alkaline | Low-Medium | Non-Sodic |
Subsoil (B21 horizon) | Moderately Alkaline | Low-Medium | Sodic |
Deeper Subsoil (at 85-120 cm) | Strongly Alkaline | Medium-High | Strongly Sodic |
The surface and upper subsoil are moderately alkaline. The deeper subsoil is strongly alkaline. | The salinity rating in the surface and upper subsoil is low to medium. The deeper subsoil has a medium to high salinity rating. | The surface is non-sodic. The upper subsoil is sodic and the deeper subsoil is strongly sodic. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A1 | 0-20 | 8.2 | 7.8 | 0.22 | 0.014 | 22 | 4 | 1.8 | 0.5 |
B21 | 20-55 | 8.0 | 7.5 | 0.28 | 0.016 | 18 | 5.2 | 1.6 | 1.8 |
B31 | 55-85 | 8.2 | 7.5 | 0.4 | 0.033 | 16 | 9.9 | 2.1 | 4.3 |
B32 | 85-120 | 8.7 | 8.1 | 0.72 | 0.097 | 15 | 14 | 2.6 | 7.1 |