LWA16
Note: This profile is in draft format only, will be finalised in the near future
| Australian Soil Classification: ..................., CALCAROSOL | Site Description: Stubble paddock. |
| Geology: Quaternary aeolian and alluvial deposits |  |
 LWA16 Landscape |
Soil Profile Morphology:
Surface Soil
| A11 | 0-10 cm | Brown (7.5YR4/3); light sand; loose consistence (moderately moist) soft surface conditions; moderately calcareous; pH 8.7: |  LWA16 Profile |
| A12 | 10-15 cm | Brown (7.5YR4/3); loamy sand; massive; very weak consistence (dry); some platey structure; moderately calcareous; pH 8.7; abrupt change to: | |
| A2 | 15-30 cm | Reddish brown (5YR4/4); fine sandy clay loam (medium sand); massive; firm to very firm consistence (dry); few (2-5%) calcareous nodules (2-4 mm); some macropores; highly calcareous; pH 8.7; gradual change to: | |
| Subsoil | |||
| B21k | 30-50 cm | Yellowish red (5YR5/6); light clay (sandy); weak coarse to medium (10-50 mm) blocky structure; very weak to weak consistence (dry); many (40%) carbonate/silica nodules (2-30 mm); pH 8.9: | |
| B22k | 50-70 cm | Red (2.5YR5/8); medium clay; weak to moderate medium to fine (5-20 mm) sub-angular blocky structure; very weak to weak consistence (slightly moist); many (30%) carbonate/silica nodules (2-30 mm) and calcareous tubules; pH 8.9; gradual change to: | |
| B23k | 70-100 cm | Red (10R4/6); medium clay (sandy); weak to moderate coarse (50-100 mm) prismatic, parting to moderate to strong, coarse to medium (10-50 mm) sub-angular blocky structure; firm to very firm consistence (dry); many (40%) carbonate/silica nodules; pH 9.2; gradual change to: | |
| B24 | 100-160+ cm | Red (2.5YR4/6); medium clay (sandy); strong, coarse to medium (10-50 mm) angular blocky structure; fine manganese flecks present; carbonate/silica nodules common (10%) with soft carbonate segregations in pipey structures; pH 9.4. | |
Key Profile Features:
Soil Profile Characteristics:
| pH | Salinity Rating | ||
Surface (A11 horizon) | Strongly Alkaline | | | None |
Subsoil (B21k horizon) | Strongly Alkaline | | | None1 |
Deeper subsoil (at 100-160+ cm) | Very Strongly Alkaline | | | None1 |
- 1 No diserpsion after remoulding
 |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | Org. Carbon mg/kg | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A11 | 0-10 | 8.7 | 8.2 | 0.11 | 0.62 | 20 | 1.2 | 0.95 | 0.08 |
A12 | 10-15 | 8.7 | 8.3 | 0.11 | 0.51 | 19 | 1.1 | 0.71 | 0.08 |
A2 | 15-30 | 8.7 | 8.2 | 0.13 | 0.5 | 25 | 2.7 | 1.1 | 0.1 |
B21k | 30-50 | 8.9 | 8.3 | 0.13 | | 23 | 5.4 | 0.61 | 0.19 |
B22k | 50-70 | 8.9 | 8.4 | 0.15 | | 21 | 8.9 | 0.81 | 0.3 |
B23k | 70-100 | 9.2 | 8.5 | 0.19 | | 18 | 11 | 1.5 | 1.1 |
B24 | 100-160+ | 9.4 | 8.7 | 0.29 | | | | | |
Horizon | Horizon Depth | Boron mg/kg | 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) % |
A11 | 0-10 | 0.9 | 10.9 | 4.7 | 55 | 29 | 7 | 5 |
A12 | 10-15 | 1 | 10.8 | 4.1 | 62 | 23 | 6 | 6 |
A2 | 15-30 | 1.1 | 17.9 | 8.9 | 39 | 20 | 8 | 21 |
B21k | 30-50 | 1.1 | 20.6 | 10.1 | 34 | 17 | 8 | 19 |
B22k | 50-70 | 1.3 | 21.5 | 10.9 | 33 | 13 | 7 | 23 |
B23k | 70-100 | 6.5 | 24.7 | 12.6 | 35 | 15 | 7 | 31 |
B24 | 100-160+ | 15 | | | | | | |
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