Victorian Resources Online (archived)
IS34
Location: Longerenong
Australian Soil Classification: Calcic, Mesonatric, Red SODOSOL
Northcote Factual Key: Dr2.33
Great Soil Group: red brown earth
Soil Type: Drung Sandy Clay Loam
General Landscape Description: Anastomotic plain.
Geology: Quaternary Coonambidgal Formation: fluvial to lacustrine clays and sands.
Soil Profile Morphology:
Surface Soil
| A1 | 0-5 cm | Dark reddish brown (5YR3/4); fine sandy clay loam; hardsetting surface condition; strong very coarse platy structure; strong consistence dry; pH 7.2; sharp boundary to: | |
| Subsoil | |||
| B21 | 5-30 cm | Dark reddish brown (5YR3/4); sporadically bleached (7.5YR7/3d); medium clay; moderate coarse blocky structure; strong consistence dry; pH 8.4; clear boundary to: | |
| B221 | 30-60 cm | Yellowish red (5YR4/6); light clay; subplastic; weak coarse blocky structure; very firm consistence dry; field pH 9.0; clear boundary to: | |
| B222 | 60-90 cm | Light brown (7.5YR6/4) with faint pale brown (10YR6/3) mottles; light clay; subplastic; weak coarse blocky structure; very few (<2%) medium (2-6 mm) hard carbonate segregations; pH 9.0; gradual boundary to: | |
| B223 | 90-120 cm | Light brown (7.5YR6/4) with faint pale brown (10YR6/3) mottles; light clay; subplastic; weak coarse blocky structure; very few (<2%) medium (2-6 mm) hard carbonate segregations; pH 9.0; diffuse boundary to: | |
| B224 | 120-150 cm | Brown (10YR5/3) with faint reddish brown (5YR5/4) mottles; medium clay; weak very coarse blocky structure; strong consistence dry; very few (<2%) medium (2-6 mm) hard carbonate segregations; pH 9.0; clear boundary to: | |
| B231k | 150-185 cm | Yellowish brown (10YR5/4) with faint reddish brown (5YR4/4) mottles; light medium clay; subplastic; weak coarse blocky structure; strong consistence dry; many (20-50%) coarse (6-20 mm) soft carbonate segregations; pH 9.0; gradual boundary to: | |
| B232k | 185-200 cm | Brown (10YR5/3) with faint reddish brown (5YR5/4) mottles; medium clay; weak coarse blocky structure; strong consistence dry; many (20-50%) coarse (6-20 mm) soft carbonate segregations; pH 9.0; gradual boundary to: | |
| B233k | 200-215 cm | Brown (7.5YR5/4) with faint reddish brown (5YR4/4) mottles; medium clay; weak very coarse blocky structure; strong consistence dry; many (2050%) coarse (620 mm) soft carbonate segregations; pH 9.0. | |
Chemical and Physical Analysis:
Horizon | Sample Depth cm | pH H2O | EC dS/m | Sodium Chloride % | Exchangeable Calcium cmol-/kg | Exchangeable Magnesium cmol-/kg | Exchangeable Potassium cmol-/kg | Exchangeable Sodium cmol-/kg | Total Nitrogen % | Organic Carbon % | Exchangeable Acidity cmol-/kg | Field Capacity -30okPa | Permanent Wilting Point -1500okPa | Coarse Sand % | Fine Sand % | Silt % | Clay % |
A1 | 0–5 | 7.2 | 0.12 | 0.03 | 3.9 | 4.5 | 1 | 1.1 | 0.09 | 1.0 | 4.5 | 20.7 | 10.3 | 23 | 38 | 12 | 26 |
B21 | 5–30 | 8.4 | 0.5 | 0.15 | 8.9 | 13.8 | 2 | 7.3 | 0.09 | 0.8 | 47.8 | 29.5 | 7 | 19 | 7 | 65 | |
B221 | 30–60 | ||||||||||||||||
B222 | 60–90 | ||||||||||||||||
B223 | 90–120 | ||||||||||||||||
B224 | 120–150 | ||||||||||||||||
B231k | 150–185 | ||||||||||||||||
B232k | 185–200 | ||||||||||||||||
B233k | 200–215 |
Management Considerations:
- Strong texture contrast profile, possible uniform clay soil in places.
- Neutral surface soil over alkaline subsoil, slightly decreasing at depth, high level of nutrients in upper subsoil (B22 horizon).
- Thin surface soil with, poor structure and fine sand component; susceptible to compaction.
- Upper subsoil is red, whole coloured suggesting oxidation and little water and air movement restriction.
- Subsoil is sodic, becoming strongly sodic with depth and moderate to high salinity values in subsoil.
- Subsoil is paler coloured and mottled below upper subsoil 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).
