SW56
| Location: Cooriemungle | Australian Soil Classification: Melacic, Humic/Sesquic, Semiaquic PODOSOL ( Magnesic, Grey Kurosol) |
| Great Soil Group: podzol | General Landscape Description: rise on valley floor in dissected plain |
| Geology: Quaternary alluvium derived from Hanson Plain Sand |  |
 SW56 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-20 cm | Black (10YR2/1 moist, 10YR4/1 dry); sandy loam; weakly pedal, polyhedral (5-20 mm); weak consistence; pH 5.1; abrupt smooth change to: |  SW56 Profile |
| A2e | 20-30/40 cm | Greyish brown (10YR5/2 moist), conspicuously bleached (10YR8/1 dry); fine sandy loam; apedal; massive; firm consistence; pH 4.8; abrupt and wavy change to: | |
| Subsoil | | | |
| B21h | 34/40-35/45 cm | Black (10YR2/1 moist and 10YR3/1 dry); fine sandy clay loam; apedal, massive; clear and wavy change to: | |
| B22s | 35/45-80 cm | Olive yellow (2.5Y6/8 moist) with light red (2.5YR7/6 dry) mottles; fine sandy clay loam; apedal, massive; strong consistence; pH 5.1; gradual and smooth change to: | |
| D23g | 80 cm+ | Grey (2.5Y5/1) with [10-15%], yellowish brown (10YR5/8 moist) mottles common; medium clay; medium (20-50 mm) prismatic, parting to coarse [20-50 mm] and medium (10-20 mm) blocky structure; firm to very firm consistence; pH 4.9. |
Key Profile Features:
- Presence of humic and sesquic horizons in upper subsoil - probably developed within older soil profile (i.e. Kurosol).
Soil Profile Characteristics:
| pH | Salinity Rating | Sodicity | Dispersion |
Surface (A1 horizon) | Strongly Acid | Low | Non-sodic | None |
Subsoil (Bs horizon) | Strongly Acid | Very low | Non-sodic | None |
Deeper subsoil (at 80+ cm) | Very Strongly Acid | Very low | Non-sodic | None |
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|  | |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-20 | 5.1 | 4.6 | 0.37 | 0.02 | 7 | 0.9 | 0.7 | 0.2 |
A2 | 20-30 | 4.8 | 4.1 | 0.06 | | 0.82 | 0.11 | <0.05 | <0.05 |
Bs | 40-80 | 5.1 | 4.7 | 0.06 | | 0.35 | 0.12 | 0.16 | 0.06 |
Bg | 80+ | 4.9 | 4.1 | 0.06 | | 0.08 | 2 | 0.14 | 0.2 |
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 | 0-20 | <10 | 19 | 42.8 | 19.9 | 17 | 38 | 23 | 4 |
A2 | 20-30 | <10 | 2 | 15.5 | 2 | 11 | 42 | 36 | 5 |
Bs | 40-80 | 110 | 19 | | | 6 | 27 | 26 | 32 |
Bg | 80+ | 280 | 12 | | | 88 | 21 | 27 | 43 |
Management Considerations:
Subsoil (B) Horizons
- The strongly to very strongly acid subsoil indicates that aluminium and manganese toxicity may occur. The exchangeable aluminium levels measured in the laboratory are quite high in the subsoil and may affect the growth of aluminium sensitive species.
Profile Described By:
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