SW45
Location: Brucknell.
Australian Soil Classification: Vertic (& Sodic), Hypocalcic, Brown CHROMOSOL
Map Unit: Unit 145 (Maher and Martin, 1987).
General Landscape Description: Level plain.
Site Description: Grazing paddock (dairy).
Geology: Tertiary - Moorabool Viaduct Formation.
 SW45 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-15 cm | Very dark brown (10YR2/2); fine sandy clay loam; moderate medium blocky structure; weak to firm consistence moist; pH 6.1; clear change to: |  SW45 Profile |
| Subsoil | |||
| B1 | 15-35 cm | Brown (10YR5/3) with a common amount of yellowish brown (10YR5/8) mottles; fine sandy light clay; moderate medium blocky structure; firm consistence moist; contains a few (5%) medium (2-4 mm in size) ferruginous nodules; pH 6.7; gradual change to: | |
| B21 | 35-60 cm | Yellowish brown (10YR5/4) with a common amount of lighter yellowish brown (10YR5/6) mottles; medium heavy clay; moderate coarse blocky, parting to strong medium polyhedral structure; firm consistence moist; contains very few very coarse concretions; pH 7.3; gradual change to: | |
| B22 | 60-80 cm | Light yellowish brown (2.5Y6/4) with a common amount of brownish yellow (10YR6/6) mottles; medium heavy clay; strong coarse blocky, parting to strong medium polyhedral structure; contains a few (5%) medium (2-5 mm in size) ferruginous nodules ; pH 7.6; gradual change to: | |
| B3k | 80+ cm | Light grey (2.5Y7/0) with a common amount of brownish yellow (10YR6/8) mottles; medium clay; strong very coarse lenticular, parting to strong very fine lenticular structure; contains a few (5%) extremely coarse (up to 90 mm in size) carbonate/silica nodules; pH 8.4. | |
Key Profile Features:
- The clay content increases gradually with depth.
 | pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Acid | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Slightly Alkaline | Very Low | Non-Sodic | None |
Deeper Subsoil (at 80+ cm) | Moderately Alkaline | Low | Sodic | None |
| The surface is slightly acid. The subsoil is slightly alkaline becoming moderately alkaline at 80 cm depth. | The salinity rating is very low to low throughout the profile. | The surface and upper subsoil is non-sodic. The subsoil becomes marginally sodic at 50 cm depth. | The clay content increases gradually with depth. |
Horizon | Horizon Depth (cm) | pH (water) | pH CaCl2 | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0.15 | 6.1 | 5.3 | 0.08 | | 18 | 1.7 | 0.2 | 0.2 |
B1 | 15-35 | 6.7 | 5.7 | 0.06 | | 8 | 1.6 | 0.2 | 0.2 |
B21 | 35-60 | 7.3 | 6.5 | 0.1 | | 9.7 | 1.8 | 0.2 | 0.6 |
B22 | 60-80 | 7.6 | 6.9 | 0.15 | | 11 | 1.7 | 0.2 | 0.9 |
B3k | 80+ | 8.4 | 7.9 | 0.35 | 0.04 | 13 | 2 | 0.2 | 1.5 |
Horizon | Horizon Depth (cm) | Oxidisable Organic Carbon % | Total Nitrogen % | Exchangeable Acidity meq/100g | 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) |
A1 | 0.15 | 4.2 | 0.43 | | 30.9 | 17.5 | 13 | 41 | 7 | 26 |
B1 | 15-35 | | | 6.5 | 24.9 | 13.5 | 14 | 41 | 8 | 34 |
B21 | 35-60 | | | | 32.4 | 19.5 | 12 | 30 | 6 | 51 |
B22 | 60-80 | | | | 36.8 | 22.4 | 11 | 24 | 5 | 59 |
B3k | 80+ | | | | 39.2 | 23.6 | 9 | 22 | 3 | 63 |
Profile Described By: Mark Imhof and Austin Brown (August 1998).
© State of Victoria (Agriculture Victoria) 1996 - .
This work, Victorian Resources Online, is licensed under a Creative Commons Attribution 4.0 licence. You are free to re-use the work under that licence, on the condition that you credit the State of Victoria (Agriculture Victoria) as author, indicate if changes were made and comply with the other licence terms.
The licence does not apply to ‘branding’ or some ‘images or photographs’ that may be owned by third parties. We ask you to seek prior approval to use images using the VRO feedback form. Access to higher quality images can also be provided on request.
This page was last updated on .