Property: Rutherglen Research Institute.
Paddock Number: E.
Australian Soil Classification: Bleached-Sodic, Eutrophic, Yellow DERMOSOL.
Northcote Factual Key: Gn 4.65.
Great Soil Group: Yellow Soloth.
General Landscape Description: Slightly lower lying area of the plain.
Soil Mapping Unit: Rutherglen Loam (deep phase).
Site NE33 Landscape |
A11 | 0-5 cm | Yellowish brown (10YR5/4); fine sandy clay loam; weak coarse blocky structure; pH 5.5; clear change to: | Site NE33 Profile |
A12 | 5-15 cm | Yellowish brown (10YR5/4); silty clay loam; pH 4.9; abrupt change to: | |
A2 | 15-35 cm | Light yellowish brown (10YR6/4) conspicuously bleached (10YR8/2d); fine sandy clay loam; weak coarse blocky structure; contains a few (10%) ferromanganiferous nodules (2-10 mm size); pH 5.2; clear and wavy change to: | |
Subsoil | |||
B21 | 35-50 cm | Very pale brown (10YR7/4) with yellow (10YR7/8) mottles; light clay (fine sandy); weak medium blocky structure; strong consistence dry; contains a few (2-5%) ferruginous concretions (10 mm size); pH 5.9; abrupt change to: | |
B22 | 50-60 cm | Yellow (10YR7/8); light clay (fine sandy); weak to moderate medium blocky structure; pH 6.0; clear change to: | |
B23 | 60-80 cm | Brownish yellow (10YR6/6 and 6/8); medium clay; moderate medium blocky structure; pH 5.8; clear change to: | |
B3 | 80 cm+ | Light brownish grey (10YR6/2) with yellowish brown (10YR5/6 and 5/8) mottles; medium heavy clay; moderate medium blocky structure; contains a few (5-10%) ferromanganiferous nodules (6-10 mm size); pH 6.6. |
The surface horizons are strongly acid. The upper subsoil is moderately acid and the deep subsoil becomes slightly acid. | The upper soil profile is non-sodic (and non-dispersive) throughout. The deep subsoil becomes sodic (from 80 cm depth). | ||
Soluble salt levels are very low throughout the profile. | There is a moderate texture contrast at the A/B horizon boundary. | ||
Exchangeable aluminium levels increase in the very strongly acid A12 horizon and decrease as pH levels increase. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Exchangeable Cations | Exchangeable Aluminium mg/kg | Field Capacity pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.2 - 2.0 mm) | Fine Sand (0.02 -0.2 mm) | Silt (0.002 -0.02 mm) | Clay (<0.002 mm) | |||
Ca | Mg | K | Na | ||||||||||||
meq/100g | |||||||||||||||
A11 | 0-5 | 5.5 | 4.8 | 0.09 | 3.3 | 0.58 | 0.5 | 0.09 | 25 | 28 | 7 | 2 | 48 | 30 | 19 |
A12 | 5-15 | 4.9 | 4.2 | 0.08 | 1.6 | 0.3 | 0.3 | 0.15 | 74 | 25 | 6 | ||||
A2 | 15-35 | 5.2 | 4.5 | <0.05 | 2 | 0.49 | 0.24 | <0.05 | 28 | 23 | 6 | 3 | 53 | 27 | 20 |
B21 | 35-50 | 5.9 | 5.2 | <0.05 | 4.6 | 2.1 | 0.55 | 0.1 | 26 | 11 | 2 | 43 | 19 | 36 | |
B22 | 50-60 | 6 | 5.2 | <0.05 | 3.4 | 2.8 | 0.51 | 0.13 | 28 | 10 | 2 | 47 | 19 | 35 | |
B23 | 60-80 | 5.8 | 5 | <0.05 | 3.3 | 4.7 | 0.58 | 0.34 | 28 | 13 | 3 | 42 | 14 | 42 | |
B3 | 80+ | 6.6 | 5.4 | <0.05 | 4 | 6.9 | 0.5 | 1.2 |