Location: Riverslea. | Australian Soil Classification: Melanic-Sodic, Eutrophic, Black DERMOSOL. |
Geology: Holocene fluvial deposits. | General Landscape Description: Level plain associated with the Thomson River. |
Mapping Unit: Thomson. | Site Description: Grazing paddock. |
Native Vegetation: Original vegetation included red gum (E tereticornis). |
Site GP64 Landscape |
A1 | 0-10 cm | Very dark greyish brown (10YR3/2); heavy fine sandy clay loam; moderate medium polyhedral, parting to fine polyhedral structure; rusty root channel mottling present; very firm consistence dry; pH 5.6: | Site GP64 Profile |
Subsoil | |||
B21 | 10-30 cm | Very dark greyish brown (10YR3/2); heavy fine sandy clay loam; moderate medium polyhedral, parting to fine polyhedral structure; very firm consistence dry; pH 5.9: | |
B22 | 30-60 cm | Dark brown (10YR3/3); silty clay loam; moderate coarse prismatic, parting to moderate coarse blocky structure; strong consistence dry; pH 6.0: | |
B23 | 60-90 cm | Dark yellowish brown (10YR4/4) with dark brown (10YR3/3) mottles; fine sandy clay loam; moderate coarse prismatic structure; contains some mica; macropores present; pH 6.5: | |
B24 | 90+ cm | Light olive brown (2.5Y5/4) with yellowish brown (10YR5/8) and brownish yellow (10YR6/6) mottles; very fine sandy clay loam; contains mica; many macropores present; pH 8.7. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Moderately Acid | Low | Non-sodic | None |
Subsoil (B21 horizon) | Moderately Acid | Low | Non-sodic | None |
Deeper subsoil (at 90 cm) | Strongly Alkaline | Moderate | Strongly Sodic | Slight1 |
The surface and upper subsoil is moderately acid. The deeper subsoil is strongly alkaline. | The surface and upper subsoil is non-sodic. The subsoil becomes sodic at 45 cm and strongly sodic at 80 cm. | ||
The surface salinity rating is low to moderate. The upper subsoil rating is low becoming moderate with depth | The clay content gradually decreases with depth. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-10 | 5.6 | 5 | 0.27 | <0.03 | 10 | 5.5 | 0.4 | 0.3 |
B21 | 10-30 | 5.9 | 5 | 0.09 | 6.1 | 5.3 | 0.3 | 0.5 | |
B22 | 30-60 | 6 | 5.2 | 0.14 | 3.7 | 5.6 | 0.16 | 0.67 | |
B23 | 60-90 | 6.5 | 5.8 | 0.56 | 0.12 | 2.2 | 5.6 | 0.1 | 1.1 |
B24 | 90+ | 8.7 | 7.7 | 0.49 | 0.1 | 1.5 | 4.1 | 0.1 | 1.1 |
Horizon | Horizon Depth (cm) | Exchangeable Aluminium mg/kg | 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 | 0-10 | <10 | 16 | 18.4 | 3 | 19 | 34 | 33 | |
B21 | 10-30 | <10 | 11 | 15.2 | 3 | 27 | 29 | 35 | |
B22 | 30-60 | <10 | 1.9 | 11.4 | 4 | 37 | 28 | 29 | |
B23 | 60-90 | 10.5 | 2 | 49 | 25 | 24 | |||
B24 | 90+ | 10.8 |