Location: Toongabbie. | Australian Soil Classification: Eutrophic, Mottled-Hypernatric, Brown SODOSOL. |
Great Soil Group: Solodic. | Geology: Pleistocene alluvial deposits. |
General Landscape Description: Level plain. | Mapping Unit: Stratford. |
Site Description: Road reserve. | Native Vegetation: The original vegetation included yellow box and red stringybark. |
Site GP34 Landscape |
A1 | 0-5 cm | Dark brown (10YR3/3); fine sandy loam; weak medium blocky structure; weak to firm consistence dry; pH 5.7: | Site GP34 Profile |
A2 | 5-20 cm | Pale brown (7.5YR7/4) conspicuously bleached (10YR8/2d); fine sandy loam; pH 5.7; abrupt change to: | |
Subsoil | |||
B21 | 20-70cm | Yellowish brown (10YR5/4) with slight brownish yellow (10YR6/8) mottles [at depth the colour becomes yellowish brown (10YR5/6) with some red (2.5YR5/8) mottles]; medium heavy clay; strong coarse blocky, parting to moderate medium blocky structure; very strong consistence dry; pH 7.8: | |
B22 | 70-100 cm | Brownish yellow (10YR6/6) with light brownish yellow (10YR6/8) mottles; light clay; strong coarse blocky structure; pH 8.5. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Moderately Acid | Low | Non-Sodic | None1 |
Subsoil (B21 horizon) | Slightly Alkaline | Low | Strongly sodic | Complete |
Deeper subsoil (at 90 cm) | Moderately Alkaline | Medium | Strongly sodic | Complete |
The surface is moderately acid. The subsoil is slightly alkaline; becoming moderately alkaline at 60 cm. | The subsoil is strongly sodic throughout. | ||
The salinity rating is low; becoming moderate at 1 metre depth. | The clay content increases significantly at the A/B horizon interface. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-5 | 5.7 | 4.7 | 0.07 | 2.5 | 2.2 | 0.3 | 0.34 | |
A2 | 5-20 | 5.7 | 4.6 | 0.11 | 1.2 | 2.8 | 0.29 | 0.83 | |
B21 | 20-70 | 7.8 | 6.8 | 0.31 | 0.07 | 1.9 | 7 | 0.3 | 3.1 |
B22 | 70-100 | 8.5 | 7.4 | 0.4 | 0.08 | 1.7 | 7.1 | 0.2 | 4 |
B23 | 100+ | 7.5 | 7.2 | 2.6 | 0.66 | 0.6 | 7.6 | 0.2 | 5.7 |
Horizon | Horizon Depth (cm) | 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 | 0-5 | 7 | 9 | 51 | 24 | 13 |
A2 | 5-20 | 7 | 5 | 50 | 25 | 19 |
B21 | 20-70 | 16 | 3 | 33 | 18 | 44 |
B22 | 70-100 | 17 | 3 | 33 | 18 | 46 |
B23 | 100+ | 4 | 25 | 25 | 46 |