SW71
Location: Tulloh
Australian Soil Classification: Bleached-Vertic (& Mottled), Magnesic, Brown CHROMOSOL
General Landscape Description: Undulating low hills.
Site Description: Waxing upper slope.
Geology: Otway Group (volcanogenic sandstone).
 SW71 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-20 cm | Dark gray (10YR4/1 moist), grayish brown (10YR5/2 dry), fine sandy loam; moderately pedal; weak to firm consistence; pH 5.5: |  SW71 Profile. Note: Surface (A1) horizon has been stripped from the soil profile |
| A2e | 20-50/60 cm | Light brownish gray (2.5Y6/2 moist), conspicuously bleached (2.5Y8/1 dry); fine sandy loam; hard setting; common (<20%), fine ferromanganiferous gravel (mostly not magnetic) sporadic and not in thick layer; very firm consistence; clear to gradual change (incipient B1) to; pH 5.8: | |
| Subsoil |  | | |
| B21ss | 50/60-100/120 cm | Dark yellowish brown (10YR3/4 moist and dry); many (~25%), faint, fine to coarse (5-20 mm) yellow brown/ dark red mottles; heavy clay; coarse (50-120 mm) prismatic, parting to thick lenticular or angular blocky structure; slickensides; diffuse yellower change to; pH 6.0: | |
| C/B | 100/120+ cm | Brownish yellow (10YR6/8 moist) to yellow (10YR8/8 dry); fine sandy with white (10YR8/1 moist) and very dark gray (5YR3/1 moist) ped faces; below 150 cm, extremely hard to break with geopick; cemented ferruginised sandstone. |
Key Profile Features:
- Conspicuously bleached subsurface (A2) horizon.
- Strong texture contrast between surface (A) horizons and subsoil (B21) horizon.
Soil Profile Characteristics:
| pH | Salinity Rating | ||
Surface (A1 horizon) | Strongly Acid | Low | Non-Sodic | None |
Subsoil (B21 horizon) | Moderately Acid | Very Low | Non-Sodic | None |
| The surface soil is strongly acid. The deeper subsoil is moderately acid. | | Salinity rating is low in the surface becoming very low in the subsoil. | |
| | The clay content increases markedly at the A/B boundary. |
Horizon | Sample Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Nitrogen % | Organic Carbon % | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||||
meq/100g | ||||||||||
A1 | 0-10 | 5.5 | 4.7 | 0.12 | 0.31 | 4.6 | 3.2 | 2.1 | 0.23 | 0.35 |
A2 | 30-50 | 5.8 | 4.7 | <0.05 | | | 0.67 | 0.96 | <0.05 | 0.17 |
B21 | 65-85 | 6 | 4.9 | 0.1 | | | 1.2 | 12 | 0.15 | 1.4 |
Horizon | Sample Depth (cm) | Exchangeable Aluminium mg/kg | Exchangeable Acidity meq/100g | Field Capacity pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2- 2.0 mm) | Fine Sand (0.02- 0.2 mm) | Silt (0.002- 0.02 mm) | Clay (<0.002 mm) |
A1 | 0-10 | 23 | 14 | 33.5 | 11.4 | 10 | 38 | 27 | 18 |
A2 | 30-50 | 23 | 6.2 | 19.1 | 6.8 | 8 | 45 | 24 | 24 |
B21 | 65-85 | 19 | 13 | 43 | 27 | 1 | 11 | 7 | 80 |
Management Considerations:
Notes
- Soils showing increasing vertic properties downslope.
Profile Described By: Richard McEwan (April 1999).
© State of Victoria (Agriculture Victoria) 1996 - .
This work, Victorian Resources Online, is licensed under a Creative Commons Attribution 4.0 licence. You are free to re-use the work under that licence, on the condition that you credit the State of Victoria (Agriculture Victoria) as author, indicate if changes were made and comply with the other licence terms.
The licence does not apply to ‘branding’ or some ‘images or photographs’ that may be owned by third parties. We ask you to seek prior approval to use images using the VRO feedback form. Access to higher quality images can also be provided on request.
This page was last updated on .