Victorian Resources Online (archived)
Site IS18
Location: Drung Drung
Australian Soil Classification: Hypocalcic, Subnatric, Brown SODOSOL
General Landscape Description: Anastomotic plain.
Geology: Quaternary Shepparton Formation: fluvial silt, sand and minor gravel.
 IS18 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Dark brown (10YR4/3); sandy clay loam; hardsetting surface condition; weak coarse granular structure; very strong consistence dry; pH 7.4; sharp and smooth boundary to: | |
| Subsoil | |||
| B211 | 10-40 cm | Brown (7.5YR4/4); light clay; subplastic; moderate coarse prismatic structure; very strong consistence dry; sticky consistence wet; pH 8.4. | |
| B212 | 40-60 cm | Brown (7.5YR4/4); heavy clay; subplastic; moderate coarse prismatic structure; very strong consistence dry; sticky consistence wet; pH 9.4; clear and smooth boundary to: | |
| B22 | 60-90 cm | Pale brown (10YR6/3) with yellowish red (5YR5/8) mottles; medium clay; plastic; weak coarse subangular blocky structure; very strong consistence dry; sticky consistence wet; very few (<2%) hard carbonate segregations; pH 9.1; gradual boundary to: | |
| B23 | 90-120 cm | Light brownish grey (10YR6/2); heavy clay; plastic; weak coarse subangular blocky structure; very strong consistence dry; sticky consistence wet; very few (<2%) hard carbonate segregations; pH 9.1. | |
Soil Profile Characteristics:
Horizon | Sample Depth cm | pH | EC dS/m | Sodium Chloride % | Exchangeable Calcium cmol-/kg | Exchangeable Magnesium cmol-/kg | Exchangeable Potassium cmol-/kg | Exchangeable Sodium cmol-/kg | Exchangeable Aluminium mg/kg | Exchangeable Acidity cmol-/kg | Field Capacity -30okPa | Permanent Wilting Point -1500okPa | Coarse Sand % | Fine Sand % | Silt % | Clay % | |
H2O | CaCl2 | ||||||||||||||||
A1 | 0–10 | 7.4 | NA | 0.07 | 0.01 | 9 | 1.3 | 1.4 | 0.1 | NA | 3.7 | NA | 9.7 | 14 | 46 | 12 | 27 |
B211 | 10–40 | 8.4 | NA | 0.64 | 0.03 | 13.9 | 17.5 | 1.9 | 5.7 | NA | 3.9 | NA | 30 | 3 | 14 | 7 | 72 |
B212 | 40–60 | 9.4 | NA | 0.59 | 0.05 | 6.8 | 15.4 | 1.7 | 6.3 | NA | NA | NA | 23.1 | 5 | 26 | 11 | 53 |
B22 | 60–90 | 9.1 | NA | 0.86 | 0.12 | 5.5 | 14.4 | 1.5 | 6.9 | NA | NA | NA | 21.8 | 5 | 34 | 11 | 47 |
B23 | 90–120 | 9.1 | NA | 0.94 | 0.12 | 5 | 12.6 | 1.4 | 7.2 | NA | NA | NA | 20.5 | 7 | 35 | 12 | 43 |
B24 | 120–150 | 9.1 | NA | 1.01 | 0.15 | NA | NA | NA | NA | NA | NA | NA | 21.2 | 5 | 31 | 12 | 48 |
B25 | 150–185 | 9.2 | NA | 1.02 | 0.14 | NA | NA | NA | NA | NA | NA | NA | 19.5 | 5 | 32 | 11 | 43 |
B26 | 185–215 | 9.2 | NA | 0.95 | 0.15 | NA | NA | NA | NA | NA | NA | NA | 19.9 | 3 | 38 | 9 | 42 |
B27 | 215–245 | 8.9 | NA | 0.77 | 0.14 | NA | NA | NA | NA | NA | NA | NA | 17.2 | 1 | 46 | 10 | 42 |
B28 | 245–275 | 8.7 | NA | 0.69 | 0.13 | NA | NA | NA | NA | NA | NA | NA | 17.3 | 2 | 46 | 11 | 41 |
Management Considerations:
- Very strong texture contrast (27% to 72% clay), clay decreasing with depth.
- Alkaline soil, slightly decreasing at depth, high level of nutrients in upper subsoil (B22 horizon).
- Thin surface horizon with, poor structure and high fine sand component.
- Subsoil is sodic, becoming strongly sodic with depth and high salinity values below 45cm.
- Upper subsoil has strong colour and no mottling, indicating little restrictive water and air movement.
- Subsoil is pale and mottled below 60cm, indicating some restricted drainage.
- Landform element, plain; slow site drainage, unless near drainage line.
Profile Described By: John Martin, Nabil Badawy, Ron Cawood, Geoff Pope, John Galea, John Turner (1970).
