SW68
| Location: Narangrook West | Australian Soil Classification: Bleached-Mottled, Eutrophic, Brown CHROMOSOL (very thick loamy surface horizons) |
| General Landscape Description: Gently inclined undulating rises | Site Description: Crest |
| Geology: Hanson Plain Sand | |
 SW68 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Dark greyish brown (10YR4/2 moist), light brownish grey (10YR6/2 dry); sandy loam; apedal; very weak consistence; pH 5.2: |  SW68 Profile |
| A21eg | 10-60 cm | Very pale brown (10YR7/4 moist), light grey (10YR7/2 dry); sandy loam; abrupt smooth change to: | |
| A22ce | 60-80 cm | Very many (80%) irregular rounded coarse (10-30 mm) ferromanganiferous nodules in a very pale brown (10YR7/4 moist), light grey (10YR7/2 dry) sandy loam matrix: | |
| A3 | 80-90 cm | Yellow/grey mottled; coarse sandy loam with fine distinct red mottles, clear change to: | |
| Subsoil |  | | |
| B21tg | 90-150 cm | Mottled brown (7.5YR4/4 moist) (50%) and strong brown (7.5YR5/8 moist) (50%); tough heavy clay; firm (moist) consistence; pH 6.2: | |
| B22tg | 150-220/230 cm | Brown (7.5YR4/6 moist) and strong brown (7.5YR5/6 moist) and dark brown (7.5YR3/2 moist) and grey (7.5YR5/1) coatings on ped faces; heavy clay; firm (moist) consistence; pH 6.0; abrupt change to: | |
| C | 220/230 cm+ | Hanson Plain Sand; red and yellow mottled weekly cemented coarse sand, diggable with spade; very many (80%) irregular rounded coarse (10-30 mm) ferromanganiferous nodules in a very pale brown (10YR7/4 moist), light grey (10YR7/2 dry) sandy loam matrix. |
Key Profile Features:
- Very thick conspicuously bleached subsurface (A2) horizon.
- Strong texture contrast between surface (A) horizons and subsoil (B21) horizon.
Soil Profile Characteristics:
| pH | Salinity Rating | Sodicity | Dispersion |
Surface (A1 horizon) | Strongly Acid | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Strongly Acid | Very Low | Non-Sodic | None |
Deeper subsoil (at 150 - 220 cm) | Moderately Acid | Very Low | Non-Sodic | None |
 |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-10 | 5.2 | 4.5 | 0.13 | | 3.2 | 0.57 | 0.31 | 0.22 |
B21g | 100-120 | 6.2 | 5.7 | 0.08 | | 3.3 | 9.7 | 0.15 | 0.43 |
B22g | 170-190 | 6 | 5.6 | 0.08 | | 1.9 | 11 | 0.14 | 0.62 |
Horizon | Horizon Depth (cm) | Ex Al mg/kg | Ex Ac meq/100g | Field 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 | 48 | 13 | 19.6 | 6.6 | 20.9 | 49.7 | 11.5 | 9.5 |
B21g | 100-120 | <10 | 10 | 43 | 30.3 | 6.1 | 10 | 2.5 | 79 |
B22g | 170-190 | <10 | 10 | 44.9 | 31.6 | 4.3 | 11.4 | 3.5 | 78.5 |
Management Considerations:
Notes:
- Flat on top of hill, which rises again to the West. Soils becoming moderately/ weakly vertic in concavity of upper slope unit. Soils moderately vertic and very dark in parts, on way to McNabbs Rd, with structure and colour similar to soils on the Dilwyn and Moorabool Viaduct.
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