Location: Kalkee
Australian Soil Classification: Epicalcareous-Endohypersodic, Self-Mulching Grey VERTOSOL
General Landscape Description: Level plain.
Site Description: Pasture paddock.
Geology: Neogene (Tertiary).
Soil Profile Morphology:
Surface Soil
A1 | 0-10 cm | Dark greyish brown (10YR4/2); light clay; weak coarse sub-angular blocky structure; weak consistence moist and dry; contains a few soft carbonate segregations; very highly calcareous; pH 8.2; sharp change to: | |
Subsoil | |||
B21k | 10-40 cm | Dark grey (10YR4/1); medium clay; strong sub-angular blocky structure; contains common very coarse soft carbonate segregations; very highly calcareous; pH 8.8; gradual change to: | |
B31 | 40-65 cm | Brown (10YR5/3); medium clay; strong sub-angular blocky structure; contains few soft carbonate segregations; very highly calcareous; pH 9.4; gradual change to: | |
B32 | 65-90 cm | Brown (7.5YR5/4); medium clay; strong sub-angular blocky structure; contains very few soft carbonate segregations; very highly calcareous; pH 9.6; gradual change to: | |
B33 | 90-120 cm | Light yellowish brown (10YR6/4); light clay; weak consistence moist; contains few soft carbonate segregations; very highly calcareous; pH 9.7. |
pH | Salinity Rating | ||
Surface (A1 horizon) | Moderately Alkaline | Low-Medium | Non-Sodic |
Subsoil (B21 horizon) | Strongly Alkaline | Low-Medium | Sodic |
Deeper Subsoil (at 90-120 cm) | Extremely Alkaline | Very High | Extremely Sodic |
The surface horizon is moderately alkaline. The subsoil is strongly alkaline becoming extremely alkaline at depth. | The salinity rating in the surface and upper subsoil is low-medium. The deeper subsoil has a very high salinity rating. | The surface soil is non-sodic. The upper subsoil is sodic. The deeper subsoil is extremely sodic. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A1 | 0-10 | 8.2 | 7.8 | 0.29 | 0.009 | 24 | 6.3 | 2 | 1.3 |
B21k | 10-40 | 8.8 | 8.1 | 0.4 | 0.014 | 16 | 7.3 | 1.3 | 4 |
B31 | 40-65 | 9.4 | 8.6 | 0.61 | 0.051 | 12 | 13 | 1.5 | 8.7 |
B32 | 65-90 | 9.6 | 8.9 | 0.87 | 0.100 | 5.3 | 15 | 1.6 | 12 |
B33 | 90-120 | 9.7 | 8.9 | 1 | 0.121 | 4.4 | 13 | 1.6 | 13 |