Group: Chiltern Landcare Group | Australian Soil Classification: Bleached-Sodic, Eutrophic, Yellow CHROMOSOL |
Northcote Factual Key: Dy 3.43 | Great Soil Group: solodic soil |
General Landscape Description: Old alluvial plain. The original vegetation included Yellow Box (Eucalyptus melliodora) and Red Box (E. polyanthemos). |
NE1 landscape |
A1 | 0-10 cm | Dark brown (10YR4/3); fine sandy loam; hardsetting and massive surface condition; firm consistence dry; pH 6.0*; clear and smooth change to: | NE1 profile |
A2 | 10-35 cm | Light yellowish brown (10YR6/4) conspicuously bleached (10YR8/2d); coarse loamy sand; massive; firm consistence dry; pH 5.3*; clear and wavy change to: | |
Subsoil | |||
B21 | 35-60 cm | Light yellowish brown (10YR6/4) and brownish yellow (10YR6/6) mottles; light clay (sandy); weakly structured; very strong consistence dry; contains a few (3%) semi-hard manganese concretions; pH 7.7; gradual change to: | |
B22 | 60-90 cm | Light yellowish brown (10YR6/4) with brownish yellow (10YR6/6) mottles; light clay (sandy); moderate coarse sub-angular blocky structure; very strong consistence dry; contains a few (5-10%) hard manganese nodules and very few (2%) quartz crystals; pH 7.5; gradual change to: | |
B23 | 90+ cm | Brown (10YR5/3) with yellowish red (5YR5/8) and brownish yellow (10YR6/6) mottles; medium clay; moderate structure; very firm consistence moist; contains manganese stains and pockets of quartz; pH 8.3. | |
*20 replicates taken from the paddock. |
Horizon | pH | Salinity Rating | ||
Surface (A1 horizon) | moderately acid | very low | non-sodic | __ |
Subsoil (B21 horizon) | slightly acid | very low | nearly sodic | none1 |
Deeper subsoil (at 1 m) | moderately alkaline | very low | sodic | strong |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||
meq/100g | ||||||||
A1 | 0-10 | 6 | 5 | <0.05 | 2.3 | 0.6 | 2.7 | 0.1 |
A2 | 10-35 | 5.3 | 4.4 | <0.05 | 1 | 1.5 | 0.1 | 1.7 |
B21 | 35-60 | 7.7 (6.8) | 5.6 | <0.05 | 4.8 | 1.9 | 0.4 | 0.4 |
B22 | 60-90 | 7.5 | 0.09 | 4.3 | 2.2 | 0.5 | 0.5 | |
B23 | 90+ | 8.3 | 0.08 | 4.7 | 5.8 | 0.7 | 1.7 |
Horizon | Horizon Depth (cm) | 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) |
A1 | 0-10 | <10 | 20.4 | 4 | 23 | 45 | 16 | 16 |
A2 | 10-35 | 15 | 17.8 | 4.7 | 28 | 43 | 20 | 8 |
B21 | 35-60 | <10 | 22.5 | 14.7 | 23 | 27 | 13 | 35 |
B22 | 60-90 | |||||||
B23 | 90+ |