Mapsheet: CHARLTON | Aust. Soil Class.: Vertic (and Calcic), Mesonatric, Red SODOSOL |
Northcote Factual Key: Dr 2.13 | Great Soil Group:red-brown earth |
General Landscape Description: Lower slope of a low rise (3% slope) on a gently undulating plain. Original vegetation included Grey Box (Eucalyptus microcarpa) and Yellow Gum (E. leucoxylon). |
LP90 landscape |
A1 | 0-10 cm | Dark reddish brown (5YR3/2); sandy clay loam; moderate coarse blocky structure; firm consistence moist; pH 6.7; abrupt change to: | LP90 profile |
Subsoil | |||
B21 | 10-55 cm | Reddish brown (5YR4/4); medium heavy clay; strong coarse blocky, parting to strong medium blocky structure; some slickensides present towards bottom of horizon; pH 9.0; gradual change to: | |
B22k | 55-70 cm | Yellowish red (5YR5/6); medium clay; strong coarse blocky structure; contains a few (2-5%) soft carbonates; pH 8.9: | |
B31k | 70-100 cm | Pinkish grey (5YR6/2) and yellowish red (5YR5/8); medium clay; strong coarse prismatic, parting to moderate coarse blocky structure; contains a few (2-5%) soft carbonates and very few (2%) gypsum crystals at 70-80 cm depth; pockets of sand grains occur throughout on ped faces; pH 8.5: | |
B32k | 100 cm+ | Grey (10YR6/1) and yellowish red (5YR5/8) (associated with root channels); medium clay; moderate coarse prismatic, parting to moderate fine to medium blocky structure; contains a few (2-5%) carbonate concretions; pH 8.7. |
Key Profile Features
|
pH | Salinity Rating | |||
Surface (A1 horizon) | slightly acid | very low | non-sodic | moderate 1 |
Subsoil (B21 horizon) | strongly alkaline | low | strongly sodic | strong |
Deeper subsoil (at 1 m) | strongly alkaline | very high | strongly sodic | - |
1complete dispersion with remoulding |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-10 | 6.7 | 5.8 | 009 | 8.1 | 3 | 0.7 | 0.2 | |
B21 | 10-55 | 9.0 | 7.9 | 0.33 | <0.05 | 11 | 11 | 1 | 6.4 |
B22k | 55-70 | 8.9 | 8.2 | 1.0 | 0.09 | 8.7 | 11 | 1.2 | 8.6 |
B31k | 70-100 | 8.5 | 8.2 | 2.0 | 0.16 | 8.3 | 11 | 1.3 | 9 |
B32k | 100+ | 8.7 | 8.3 | 1.7 | 0.24 | 7.2 | 11 | 1.2 | 8.6 |
Horizon | Horizon Depth | Ex Al mg/kg | Ex Ac meq/100g | Field pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2-2.0mm) | Fine Sand (0.02-0.2mm) | Silt (0.002-0.02mm) | Clay (<0.002mm) |
A1 | 0-10 | 18.9 | 9.8 | 26 | 38 | 10 | 23 | ||
B21 | 10-55 | 49.4 | 23.6 | 17 | 20 | 9 | 52 | ||
B22k | 55-70 | 42.8 | 22.3 | 15 | 21 | 9 | 45 | ||
B31k | 70-100 | 21 | 26 | 7 | 41 | ||||
B32k | 100+ |