SW93
Location: Batesford
Australian Soil Classification: Ferric, Mottled-Hypernatric, Brown SODOSOL
General Landscape Description: Gently undulating plain.
Site Description: Simple slope.
Geology: Tertiary Moorabool Viaduct
SW93 Landscape.
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Dark brown (10YR3/3 moist and 10YR5/3 dry); sandy loam to loamy sand; apedal: |  SW93 Profile - Note: Surface (A1) horizon has been stripped from soil profile. |
| A2c | 10-30 cm | Brown (10YR4/3 moist), conspicuously bleached (10YR7/4 dry); sand gravel; gravel is mostly medium to course rounded very hard ferruginous sandstone; pH 6.3; sharp and smooth change to: | |
| Subsoil |  | | |
| B21t | 30-60/80 cm | Very dark greyish brown (10YR3/2) cutans becoming dark yellowish brown (10YR4/4) below 55 cm [yellowish red (5YR4/6) to red (10R4/8) sandy interiors]; heavy clay; coarse (60 mm) prismatic, parting to angular blocky structure; black coatings on peds; pH 7.5; diffuse or gradual change to: | |
| C | 80 cm+ | Yellow (2.5Y7/8 moist) and pale red (7.5R6/3 moist) with very pale brown (10YR8/2 moist) mottling; sandy saprolite; prominent thick clay illuviated into fissures giving appearance of vertic features around sandy matrix; pH 8.9. |
Key Profile Features:
- Strong texture contrast between surface (A) horizons and subsoil (B) horizons.
- Large amounts of ironstone gravel ("buckshot") in bleached subsurface (A2) horizon.
Soil Profile Characteristics:
| pH | Salinity Rating | ||
Surface (A2 horizon) | Slightly Acid | Very Low | Non-Sodic | - |
Subsoil (B21 horizon) | Slightly Alkaline | Low | Strongly Sodic | Strong-Complete |
Saprolite (at 90 cm) | Strongly Alkaline | Low | - | - |
| The surface is slightly acid. The subsoil is slightly alkaline becoming strongly alkaline at depth. | | Salinity rating is very low in the surface and low in the subsoil. | | The soil is non sodic in the surface and strongly sodic in the subsoil. | | The clay content is low throughout the profile. |
Horizon | Sample Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-10 | - | - | - | - | - | - | - | - |
A2 | 20-30 | 6.3 | 5.6 | 0.05 | - | 0.79 | 0.36 | <0.05 | 0.2 |
B21 | 40-50 | 7.5 | 6.4 | 0.26 | 0.01 | 2 | 6.3 | 0.4 | 4 |
C | 90-100 | 8.9 | 7.9 | 0.35 | 0.05 | - | - | - | - |
Horizon | Sample Depth (cm) | Exchangeable Aluminium mg/kg | Exchangeable Acidity meq/100g | Organic Carbon % | Nitrogen % | 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 | - | - | | | - | - | - | - |
A2 | 20-30 | <10 | 2.3 | 0.58 | <0.05 | 35 | 54 | 5 | 3 |
B21 | 40-50 | | | | | 3 | 38 | 1 | 5.5 |
C | 90-100 | | | | | | | | |
Profile Described By: Richard McEwan (March 1999).
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