SW57
| Australian Soil Classification: Humose, Dermosolic, Redoxic HYDROSOL | General Landscape Description: Flat valley floor in dissected plain |
| Site Description: Drained dairy grazing paddock | Geology: alluvium derived from Gellibrand Marl and Hanson Plain Sand |
 SW57 and SW58 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-20 cm | Very dark brown (10YR2/2); clay loam; weak polyhedral ([10-20 mm) structure; weak consistence; clear and smooth change to: |  SW57 Profile |
| Subsoil |  | | |
| B21g | 20-90/95 cm | Light brownish grey (10YR6/2 moist and 10YR7/2 dry), fine sandy clay loam with faint, fine, brownish yellow (10YR6/8 moist) mottles common (10-15%); apedal weak prismatic structure in upper horizons, becoming increasing pedal at depth (weak medium prismatic, parting to medium blocky structure); firm consistence; pH 5.7; clear change to: | |
| B22g | 90/95+cm | Grey (10YR5/1 moist) with many (20-30%) brownish yellow (10YR6/8) mottles; heavy clay; very coarse prismatic (larger at depth), parting to very coarse to coarse blocky structure; very firm consistence: |
Key Profile Features:
Soil Profile Characteristics:
| pH | Salinity Rating | Sodicity | Dispersion |
Subsoil (B21 horizon) | Moderately Acid | Low | Non-Sodic | |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
B21g | 20-90 | 5.7 | 4.9 | 0.06 | | 2 | 3 | 0.08 | 0.26 |
Horizon | Horizon Depth (cm) | Ex Al mg/kg | Ex Ac meq/100g | Field pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2-2.0mm) | Fine Sand (0.02-0.2mm) | Silt (0.002-0.02mm) | Clay (<0.002mm) |
B21g | 20-90 | 58 | 5.1 | | | 3 | 52 | 26 | 21 |
Management Considerations:
Whole Profile
- The soil profile is likely to be saturated for a number of months during most years.
- Additional subsoil horizon sampled at profile 10 m east of SW41 to ensure adequate coverage of soil variability at this site.
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