MP36
| Location: Nullawil. |  |
| Australian Soil Classification: Vertic (and Epihypersodic), Pedal, Hypercalcic, CALCAROSOL. | |
| Geology: Quaternary alluvial and aeolian deposits (Woorinen Formation). | General Landscape Description: Level plain. |
| Site Description: Paddock reserve (uncultivated). | |
 MP36 Landscape |
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Brown (10YR4/3); heavy clay loam (fine sandy); hardsetting surface condition; moderate fine sub-angular blocky structure; highly calcareous; pH 8.6: |  MP36 profile |
| Subsoil | |||
| B21k | 10-30 cm | Pink (7.5YR7/4); light medium clay; moderate coarse prismatic, parting to moderate medium sub-angular blocky and weak coarse sub-angular blocky structure; contains a moderate (20-30%) amount of fine-earth carbonates; very highly calcareous; roots stop here; pH 9.8: | |
| B22k | 30-50 cm | Light yellowish brown (10YR6/4); medium clay; strong coarse prismatic, parting to moderate coarse angular blocky structure; smooth fabric; fine-earth carbonates common (20%) with very few (2%) hard calcareous nodules; highly calcareous; pH 9.5: | |
| B23 | 50-80 cm | Light yellowish brown (2.5Y6/4); medium heavy clay; strong coarse prismatic, parting to moderate fine polyhedral structure; smooth fabric; contains a few (2%) manganese stains; slickensides at 60 cm depth; strongly calcareous; pH 9.3: | |
| B24 | 80+ cm | Light yellowish brown (2.5Y6/4) with reddish yellow (5YR6/6); medium heavy clay; lenticular structure; slickensides present; slightly calcareous; pH 9.1. | |
| Note: Sand patches occur along ped faces throughout the whole profile. At 110 cm a piece of ferruginous sandstone was found. | |||
Key Profile Features:
- Large amount of calcium carbonate deposits in soil profile.
- Gradual increase in texture (i.e. clay) with depth.
- Vertic properties in deeper subsoil (i.e. slickensides)
Soil Profile Characteristics:
 |  |
The surface soil is strongly alkaline. The upper subsoil is extremely alkaline, becoming very strongly alkaline at depth. | The salinity rating becomes very high from about 40 cm depth. |
 |  |
The surface soil is non-sodic. The subsoil is strongly sodic throughout. | Texture (i.e. clay content) increases gradually with depth down the soil profile. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCI % | Exchangeable Cations | Field Capacity pF 2.5 | Coarse Sand (0.2 - 2.0 mm) | Fine Sand (0.02 -0.2 mm) | Silt (0.002 -0.02 mm) | Clay (<0.002 mm) | |||
Ca | Mg | K | Na | |||||||||||
meq/100g | ||||||||||||||
Paddock | 0-10 | 8 | 7.5 | 0.21 | | | | | | | | | | |
A1 | 0-10 | 8.6 | 8 | 0.21 | | 17 | 7.2 | 2.3 | 0.5 | 15 | 19 | 22 | 8 | 36 |
B21 | 10-30 | 9.8 | 9.1 | 0.89 | 0.11 | 3.3 | 9.8 | 1.4 | 9 | 20 | 14 | 13 | 7 | 41 |
B22 | 30-50 | 9.5 | 9.1 | 2.1 | 0.41 | 2.5 | 13 | 1.6 | 12 | 22 | 15 | 15 | 10 | 49 |
B23 | 50-80 | 9.3 | 9.1 | 2.1 | 0.43 | 2 | 15 | 1.8 | 14 | 23 | 14 | 18 | 11 | 59 |
B24 | 80+ | 9.1 | 8.8 | 2.3 | 0.52 | 2 | 16 | 1.9 | 15 | 26 | 12 | 16 | 12 | 64 |
Profile Described By: Mark Imhof and Nathalie Baxter (August, 1996).
© 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 .