Location: Bundalaguah. | Australian Soil Classification: Eutrophic, Subnatric, Red SODOSOL (thick loamy surface). |
Great Soil Group: solodic. | Geology: Quaternary prior stream deposits. |
General Landscape Description: Prior stream levee position. | Mapping Unit: Tinamba [This soil is equivalent to Heyfield Loam as mapped by Skene and Walbran (1948)]. |
Site Description: Dairy grazing paddock. |
Site GP69 Landscape |
A11 | 0-10 cm | Dark brown (7.5YR3/4); sandy loam; weak structure; firm consistence dry; macropores present; pH 7.1; clear change to: | Site GP69 Profile |
A12 | 10-45 cm | Reddish brown (5YR4/4); sandy loam; massive structure; firm consistence dry; macropores present; pH 6.2; gradual change to: | |
A13 | 45-60 cm | Yellowish red (5YR4/6); sandy loam; massive structure; firm consistence dry; macropores present; pH 5.8; abrupt and wavy change to: | |
Subsoil | |||
B21 | 60-100 cm | Yellowish red (5YR4/6); light clay (fine sandy); moderate coarse prismatic, parting to strong coarse blocky structure; very firm consistence dry; contains few (2%) manganese stains; pH 6.7; gradual change to: | |
B22 | 100-130 cm | Reddish brown (5YR4/4) with strong brown (7.5YR5/8) mottles; light clay; moderate coarse prismatic, parting to moderate coarse blocky structure; firm consistence dry; pH 7.8; clear and wavy change to: | |
B23 | 130+ cm | Light brownish grey (2.5Y6/2) with yellowish brown (10YR5/8); silty light clay; strong coarse prismatic, parting to coarse blocky structure; very firm consistence dry; pH 8.0. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Alkaline | Moderate | Non-Sodic | None |
Subsoil (B21 horizon) | Slightly Acid | Low-Moderate | Sodic | None1 |
Deeper subsoil (at 1+ m) | Slightly Alkaline | Moderate | - | - |
The surface is slightly alkaline. The subsoil is slightly acid becoming slightly alkaline at 90 cm. | The clay content increases significantly at the A/B horizon interface. | ||
The surface salinity rating is moderate. The subsoil is low to moderate. |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A11 | 0-10 | 7.1 | 6.1 | 0.23 | 5.6 | 3.4 | 0.9 | 0.7 | |
A12 | 10-45 | 6.2 | 5.1 | 0.18 | 1.2 | 0.72 | 1.1 | 0.77 | |
A13 | 45-60 | 5.8 | 4.7 | 0.12 | 0.73 | 0.48 | 0.77 | 0.54 | |
B21 | 60-100 | 6.7 | 6 | 0.22 | 3.5 | 3 | 1.5 | 1 | |
B22 | 100-130 | 7.8 | 7.1 | 0.22 | |||||
B23 | 130+ | 8 | 7.4 | 0.37 |
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) |
A11 | 0-10 | 10.3 | 29 | 37 | 14 | 14 | |||
A12 | 10-45 | <10 | 4.9 | 31 | 43 | 12 | 13 | ||
A13 | 45-60 | 12 | 4.8 | 30 | 45 | 11 | 14 | ||
B21 | 60-100 | 12.6 | 3 | 38 | 24 | 35 | |||
B22 | 100-130 | ||||||||
B23 | 130+ |