MM228
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Site code |
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| Location |
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| Landform |
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| Geology |
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| Element |
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Profile morphology
Horizon | Depth (cm) | Description |
A1 | 0–20 | Very dark greyish brown (10YR3/2); clay loam; apedal massive structure; weak consistence (moderately moist); clear boundary to: |
A2 | 20–35 | Brown (10YR4/3), light grey (10YR7/2 dry) sporadically bleached; clay loam; very weak consistence (moderately moist); common fine segregations; sharp boundary to: |
B21 | 35–65 | Dark brown (10YR3/3) with brown (2.5YR4/6) mottles; medium clay; strong medium blocky structure; weak consistence (moist); gradual boundary to: |
B22 | 65–100 | Yellowish brown (10YR5/4) with red (2.5YR4/6) mottles; medium clay; strong medium blocky structure; firm consistence (moist); gradual boundary to: |
B23 | 100–105 | Yellowish brown (10YR5/6) with red (2.5YR4/6) mottles; medium clay; very firm consistence (moist); boundary to: |
B24 | 105+ | Dark grey (10YR4/1); light clay. |
ASC: Mottled-Sodic, Mesotrophic, Brown Chromosol
Analytical data Source: Government of Victoria, State Chemistry Laboratory.
Site MM228 | 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 | 5.6 | N/R | 0.06 | N/R | 1 | 1 | 0.1 | 0.4 | 32 | 14.3 |
A2 | 20–35 | 5.9 | N/R | 0.04 | N/R | 1.2 | 1.2 | 0 | 0.4 | 9 | 9.9 |
B21 | 35–65 | 6.1 | N/R | 0.11 | N/R | 2.8 | 2.8 | 0.2 | 2 | N/R | 19.8 |
B22 | 65–100 | 6.2 | N/R | 0.13 | N/R | N/R | N/R | N/R | N/R | N/R | 14.3 |
B23 | 100–105 | 6.3 | N/R | 0.18 | 0.05 | N/R | N/R | N/R | N/R | N/R | 14.6 |
B24 | 105+ | 7.5 | N/R | 0.11 | N/R | 4.7 | 4.7 | 0 | 4.9 | N/R | 11 |
Site MM228 | Sample depth | FC (-10kPa) | PWP (-1500kPa) | KS | FS | Z | C | Org C | Bulk density |
Horizon | cm | % | % | % | % | % | % | % | t m-3 |
A1 | 0–20 | 29.8 | 11.3 | 5 | 45 | 27 | 17 | 3.1 | 1.04 |
A2 | 20–35 | 23.4 | 10.1 | 11 | 41 | 26 | 20 | N/R | N/R |
B21 | 35–65 | 48.3 | 42.5 | 2 | 9 | 5 | 83 | N/R | 0.84 |
B22 | 65–100 | N/R | N/R | 2 | 9 | 8 | 80 | N/R | N/R |
B23 | 100–105 | N/R | N/R | 2 | 8 | 10 | 80 | N/R | N/R |
B24 | 105+ | N/R | N/R | 29 | 35 | 16 | 17 | N/R | N/R |
Management considerations
Strong texture contrast between the surface soil and the subsoil is a very important soil feature and may impact upon subsoil permeability. Sporadically bleached A2 horizons containing many fine segregations are key features of this profile. Mottled subsoils are other prominent features of this soil type.
The application of gypsum would be suitable for soil structure and improved permeability, while increasing organic matter and maintaining vegetative cover is important to help improve the soil structure. Penetration by deep-rooted crops is also useful.
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