PPW2
| Location: Leakes Road, Rockbank |  |
| Aust. Soil Class.: Sodic, Eutrophic, Red Dermosol (shallow subsoil profile) | |
| General Landscape Description: Next to olive grove, on slope 650 m of summit of Mt Kororoit. | |
| Site Description: Olive roots run parallel at rock up to 100 cm out from track. | |
 PPW1-3 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-12 cm | Dark red (2.5YR4/6); fine sandy clay loam; moderate to strong coarse to medium blocky structure; pH 6.8; clear change to: |  PPW2 Profile |
| Subsoil | |||
| B21 | 12-25 cm | Dark red (2.5YR4/6); medium clay; moderate very coarse, parting to medium strong prismatic, parting to strong medium blocky structure; pH 7.3; gradual change to: | |
| B22 | 25-45 cm | Dark red (2.5YR4/6); medium clay+; moderate very coarse, parting to moderate coarse prismatic, parting to strong medium blocky structure; pH 8.5: | |
| C | 45-100 cm | Small hunks of very fine scoria (50-150 mm) embedded in weathering carbonate layers (i.e. patches); weathering scoria with large patch of carbonate (20%). | |
Key Profile Features:
Soil Profile Characteristics:
| pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Acid | | Non-Sodic | |
Subsoil (B21 horizon) | Slightly Alkaline | | Strongly Sodic | |
Deeper subsoil (at 25-45 cm) | Moderately Alkaline | | Strongly Sodic | |
 |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A1 | 0-12 | 6.7 | 6.7 | 0.7 | <0.01 | 18 | 8.7 | 1.4 | 0.6 |
B21 | 12-25 | 7.3 | 6.7 | 0.41 | 0.02 | 8.4 | 13 | 2.5 | 5.7 |
B22 | 25-45 | 8.5 | 7.9 | 0.64 | 0.03 | 9.8 | 21 | 2.4 | 9.5 |
Horizon | Horizon Depth | Ex Al mg/kg | Ex Ac meq/100g | Field pF2.5 g/100g | Wilting Point pF4.2 g/100g | Coarse Sand (0.2-2.0mm) % | Fine Sand (0.02-0.2mm) % | Silt (0.002-0.02mm) % | Clay (<0.002mm) % |
A1 | 0-12 | 17 | | 27.5 | 37.9 | 5 | 10 | 5 | 73 |
B21 | 12-25 | | | 31.5 | 45.3 | 4 | 9 | 5 | 76 |
B22 | 25-45 | | | 34 | 54.4 | 4 | 10 | 10 | 70 |
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