SW32
Location: Kawarren
Australian Soil Classification: Bleached-Mottled, Mesotrophic, Grey KUROSOL (very thick loamy surface)
Map Unit: Map Unit 147 (Maher and Martin, 1987).
General Landscape Description: Lower slope of gently undulating rise.
Site Description: Grazing paddock (dairy).
Geology: Tertiary - Dilwyn Formation.
 SW32 Landscape |
Soil Profile Morphology:
Surface Soil
| A11 | 0-15 cm | Very dark brown (10YR2/2); light fine sandy clay loam; weak coarse blocky, parting to weak medium blocky structure; pH 5.8: |  SW32 Profile |
| A12 | 15-35 cm | Very dark greyish brown (10YR3/2); light sandy clay loam; massive structure; pH 5.2: | |
| A21 | 35-60 cm | Brown (10YR5/3), sporadically bleached; sandy loam (heavy); massive structure; contains a few (2-5%) quartz fragments; pH 5.1: | |
| A22 | 60-80 cm | Pale brown (10YR6/3); sandy loam; massive structure; contains very few (2%) rounded quartz fragments (2-5 mm in size); pH 5.3: | |
| A23 | 80-100 cm | Very pale brown (10YR7/3) with brownish yellow (10YR6/8) mottles; sandy loam; massive structure; contains a few (5%) rounded quartz fragments (2-5 mm in size); pH 5.5: | |
| Subsoil |  | | |
| B21 | 100+ cm | Light brownish grey (10YR6/2) with brownish yellow (10YR6/8) mottles; fine sandy light clay; pH 5.3. |
Soil Profile Characteristics:
| pH | Salinity Rating | ||
Surface (A11 horizon) | Moderately Acid | Low-Moderate | Non-Sodic | None |
Sub Surface (A22 horizon) | Strongly Acid | Very Low | Non-Sodic | None |
Subsoil (B21 at 1 metre) | Strongly Acid | Low | Non-Sodic | None |
 The upper surface horizon is moderately acid becoming strongly acid at 15 cm depth. |  The salinity rating is low to moderate in the upper surface and low in the subsoil. |  The clay content increases markedly at 1 metre depth. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC (dS/m) | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||
meq/100g | ||||||||
A11 | 0-15 | 5.8 | 5 | 0.18 | 5.4 | 1.8 | 0.1 | 0.2 |
A12 | 15-35 | 5.2 | 4.4 | 0.12 | 1.1 | 0.9 | 0.05 | 0.05 |
A21 | 35-60 | 5.1 | 4.4 | 0.11 | 0.6 | 0.7 | 0.05 | 0.05 |
A22 | 60-80 | 5.3 | 4.5 | 0.07 | 0.4 | 0.4 | 0.05 | 0.05 |
A3 | 80-100 | 5.5 | 4.6 | 0.08 | 0.6 | 0.9 | 0.05 | 0.05 |
B21 | 100+ | 5.3 | 4.5 | 0.12 | 1.7 | 3.1 | 0.1 | 0.2 |
Horizon | Horizon Depth (cm) | Acidity meq/100g | Oxidisable Organic Carbon % | Total Nitrogen % | Field Capacity 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) |
A11 | 0-15 | | 5.6 | 0.39 | 29.6 | 13.9 | 19 | 47 | 11 | 13 |
A12 | 15-35 | | | | 18.2 | 5.4 | 22 | 54 | 9 | 12 |
A21 | 35-60 | | | | 18 | 4.6 | 23 | 55 | 10 | 11 |
A22 | 60-80 | | | | 13.6 | 2.5 | 24 | 58 | 11 | 7 |
A3 | 80-100 | | | | 16.3 | 4 | 22 | 57 | 11 | 10 |
B21 | 100+ | 4.7 | | | 25.8 | 11.6 | 18 | 44 | 8 | 30 |
Profile Described By: Mark Imhof and Austin Brown (June 1998).
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