Location: Combienbar
Australian Soil Classification: Bleached-Mottled, Magnesic, Grey DERMOSOL
Map Unit: Combienbar
Previous Site Name: EG218
General Landscape Description: Rolling low hills
Site Description: Upper simple slope, 8% slope, east aspect
Land Use: Grazing
Native Vegetation: Damp forest and lowland forest
Geology: Late Devonian fluvial sediments (conglomerate, sandstone, mudstone)
Soil Profile Morphology:
Surface soil | |||
A1 | 0 – 15 cm | Very dark greyish brown (10YR3/2); very fine sandy loam; weak granular structure; very weak consistence, moist; pH 5.2; clear change to: | |
A2 | 15 – 40 cm | Light brownish grey (10YR6/2) conspicuously bleached with brownish yellow (10YR6/6) mottling increasing with depth; silty loam; apedal; very weak granular structure; weak consistence moist; pH 5.3; sharp change to: | |
Subsoil | |||
B1 | 40 – 60 cm | Greyish brown (10YR5/2) with few medium distinct brown (7.5YR4/4) mottles; silty clay; moderate medium polyhedral structure; very firm consistence moist; pH 5.7; clear change to: | |
B2 | 60 – 90 cm | Greyish brown (10YR5/2) with many coarse distinct reddish brown (5YR4/4) mottles; medium to heavy clay; weak medium polyhedral structure; firm consistence moist; pH 5.6; clear change to: | |
C | 90+ cm | Decomposing rock. |
- | pH | Salinity | ||
Surface soil (A1 horizon) | Strongly Acid | Very Low | Non-sodic | None |
Subsoil (B1 horizon) | Moderately Acid | Very Low | Non-sodic | Moderate1 |
Deeper subsoil (60-90 cm) | Moderately Acid | Very Low | Non-sodic | Slight1 |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | Organic Carbon % | Total Nitrogen % | Exchangeable Aluminium ppm | Exchangeable Acididty meq/100g | Exchangeable Cations | Coarse Sand (0.2-2.0 mm) % | Fine Sand (0.02-0.2 mm) % | Silt (0.002-0.02 mm) % | Clay (<0.002 mm) % | Field cap. % w/w | Wilt. point % w/w | |||
Ca | Mg | K | Na | |||||||||||||||
meq/100g | ||||||||||||||||||
A1 | 0-15 | 5.2 | 4.2 | <0.05 | 2.6 | 0.14 | 87 | 12.0 | 1.5 | 0.45 | 0.057 | 0.17 | 2 | 54 | 20 | 16 | 28.0 | 6.0 |
A2 | 15-40 | 5.3 | 4.1 | <0.05 | 0.62 | <0.05 | 140 | 6.9 | 0.45 | 0.2 | <0.05 | 0.14 | 2 | 53 | 20 | 20 | 23.1 | 5.4 |
B1 | 40-60 | 5.7 | 3.9 | <0.05 | 0.3 | <0.05 | 580 | 12.0 | 0.24 | 1.7 | 0.055 | 0.49 | 1 | 39 | 24 | 32 | 28.3 | 13.6 |
B2 | 60-90 | 5.6 | 3.9 | <0.05 | 0.38 | <0.05 | 1000 | 15.0 | 0.11 | 4.4 | 0.13 | 1.1 | 0 | 14 | 25 | 57 | 39.5 | 23.5 |