Property: Rutherglen Research Institute.
Paddock Number: 30
Australian Soil Classification: Haplic, Eutrophic, Red CHROMOSOL (gravelly surface).
Northcote Factual Key: Dr 2.42
Great Soil Group: No suitable group.
General Landscape Description: Ordovician sediments within the upper slope of a hill at 3% slope.
Soil Mapping Unit: Type H.
Site NE40 Landscape |
A1 | 0-15 cm | Dark reddish brown (5YR3/3); sandy clay loam; weak consistence moist; contains many (50%) quartz gravel fragments (4-40 mm size); pH 5.5; abrupt change to: | Site NE40 Profile |
A2 | 15-20 cm | Yellowish red (5YR4/8); fine sandy clay loam; discontinuous; contains an abundant (70%) amount of quartz gravel (4-50 mm size); abrupt change to: | |
Subsoil | |||
B21 | 20-45 cm | Red (10R4/8); medium heavy clay; strong coarse blocky, parting to strong fine polyhedral structure; firm consistence moderately moist; contains a trace (< 2%) amount of quartz gravel (2 - 5 mm size); pH 6.2; gradual change to: | |
B22 | 45-70 cm | Dark red (2.5YR4/8) with strong brown (7.5YR5/8) mottles; medium clay; strong coarse blocky, parting to strong fine polyhedral structure; very firm consistence, moderately moist; contains a few (2%) quartz gravel fragments (5-20 mm size); pH 6.9: | |
B23 | 70-100 cm | Dark red (10R3/6) with yellowish brown (10YR5/8) mottles; medium clay; moderate very coarse prismatic, parting to moderate coarse blocky structure; very firm consistence moderately moist; contains a few (2%) quartz gravel fragments; pH 7.3: | |
B3 | 100-130 cm | Yellow (10YR7/6) with dark red (2.5YR4/8) mottles; light clay; moderate coarse prismatic, parting to moderate coarse blocky to fine blocky structure; firm consistence, moderately moist; contains many (50%) weathered rock fragments; pH 7.7: | |
C | 130 cm+ | Mudstone. |
The surface horizons are strongly acid. The upper subsoil is slightly acid and the deeper subsoil is slightly alkaline. | The soil profile is non-sodic throughout. | ||
The salinity rating is very low throughout. | There is a significant increase in clay percentage at the A/B horizon interface. |
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 | |||||||||||||||
A1 | 0-15 | 5.5 | 4.8 | 0.12 | 4.5 | 1 | 0.98 | 0.12 | 10 | 26 | 10 | 13 | 47 | 15 | 19 |
B21 | 20-45 | 6.2 | 5.4 | 0.05 | 7.2 | 2.8 | 1.2 | 0.1 | 37 | 23 | 3 | 11 | 5 | 82 | |
B22 | 45-70 | 6.9 | 6.1 | <0.05 | 6.9 | 4.6 | 0.75 | 0.14 | 34 | 23 | 4 | 8 | 7 | 83 | |
B23 | 70-100 | 7.3 | 6.4 | <0.05 | 5.3 | 5.6 | 0.52 | 0.19 | 33 | 20 | 4 | 13 | 12 | 72 | |
B3 | 100-130 | 7.7 | 6.6 | <0.05 | 3.1 | 5.5 | 0.24 | 0.23 | 33 | 13 | 7 | 24 | 35 | 37 |