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MM170
|
Site code |
|
| Location |
Enfield (Singer Lane), Ballarat district, south-west Victoria
|
| Landform |
Gently undulating sedimentary plains
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| Geology |
|
| Element |
|
Profile morphology
| | |
A1 | 0–20 | Dark greyish brown (10YR4/2); fine sandy clay loam; apedal massive structure; weak consistence (dry); clear boundary to: |
A2 | 20–60 | Brownish yellow (10YR6/6), very pale brown (10YR7/3 dry) conspicuously bleached; fine sandy clay loam; apedal massive structure; firm consistence (dry); sharp boundary to: |
B21 | 60+ | Yellowish brown (10YR5/4 moist) with red (2.5YR4/6) mottles; medium clay; moderate fine blocky structure; firm consistence (moderately moist). |
ASC: Magnesic,
Mottled-
Mesonatric, Brown
Sodosol
Analytical data Source: Government of Victoria, State Chemistry Laboratory.
Site MM170 | Sample
depth | pH | EC | NaCl | Ex Ca | Ex Mg | Ex K | Ex Na | Ex Al | Ex acidity |
Horizon | cm | H2O | CaCl2 | dS/m | % | cmolc/kg | cmolc/kg | cmolc/kg | cmolc/kg | mg/kg | cmolc/kg |
A1 | 0–20 | 5.7 | N/R | 0.03 | N/R | 1.1 | 1.1 | 0 | 0.2 | N/R | 4.1 |
A2 | 20–60 | 5.8 | N/R | 0.03 | N/R | 0.9 | 0.9 | 0 | 0.3 | N/R | 3.2 |
B21 | 60+ | 5.8 | N/R | 0.04 | N/R | 0.2 | 0.2 | 0.2 | 0.7 | N/R | 0.8 |
Site MM170 | Sample
depth | FC
(-10kPa) | PWP
(-1500kPa) | KS | FS | Z | C | Org C | Bulk density |
Horizon | cm | % | % | % | % | % | % | % | t m-3 |
A1 | 0–20 | 24.1 | 10.2 | 17 | 47 | 24 | 11 | 2.1 | 1.09 |
A2 | 20–60 | N/R | N/R | 13 | 40 | 20 | 27 | 0.5 | N/R |
B21 | 60+ | 36.8 | 23.7 | 7 | 18 | 10 | 64 | N/R | 1.29 |
Management considerations
These soils have hardsetting topsoils and exhibit a strong texture contrast between the surface soil and the subsoil with a bleached A2 horizon. The bleached A2 horizon is an indication of restricted drainage, poor soil structure (often massive) and low organic matter and nutrients.
Sodic and mottled subsoils are other key features of this soil and are an indication of periodic waterlogging.
Improvement of soil structure through increased organic matter would be useful while management options include reduced tillage, improving organic matter content and altering the subsoil through artificial drainage (ripping, mole drainage) and/or chemical amelioration (gypsum) to improve structure.