Location: Fiveways | Aust. Soil Class: Endohypersodic, Epipedal, Aquic (and Black) VERTOSOL |
Northcote Factual Key: Ug 5.16 | Great Soil Group: black earth |
General Site Description: Pasture paddock. | Mapping Unit: Dalmore clay (heavy surface). |
Landscape Description: Level plain. | Geology: Recent swamp deposits. |
Site GP24 Landscape |
A1 | 0-20 cm | Black (10YR2/1); medium clay; strong coarse blocky, parting to moderate medium polyhedral structure; weakly self-mulching surface; rigid consistence dry; pH 6.1; clear change to: | Site GP24 Profile |
Subsoil: | |||
B21 | 20-50 cm | Very dark grey (10YR3/1); medium heavy clay; strong very coarse blocky, parting to moderate coarse blocky (and moderate fine lenticular at depth) structure; slickensides present; rigid consistence dry; pH 7.1; clear change to: | |
B22 | 50-90 cm | Dark grey (2.5Y4/0) with faint olive yellow (2.5Y6/6) diffuse mottles; medium heavy clay; moderate medium lenticular, parting to fine lenticular structure; slickensides present; very firm consistence moist; pH 7.5; clear change to: | |
B31 | 90-130 cm | Light grey (10YR5/1) with brownish yellow (10YR6/8) mottles; medium clay; coarse lenticular structure; large slickensides present; firm consistence moist; contains occasional 'ironstone' (1-2 cm size) and manganese stains; pH 7.4. |
The surface soil is slightly acid. The subsoil is slightly alkaline throughout. | The salinity rating is very low for the upper soil horizons. From 50 cm depth the rating becomes low-medium. In the deeper soil profile the rating becomes high. |
The surface soil is non-sodic. The upper subsoil is sodic and the deeper subsoil becomes strongly sodic. | The clay content is high throughout the soil profile. |
Horizon | Horizon Depth | pH water | pH CaCl2 | EC 1:5 | NaCI % | Exchangeable Cations | ExAl mg/kg | Ex Ac meg/100g | Field pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.02 -0.2mm) | Fine Sand (0.02 -0.2mm) | Silt (0.02 -0.2mm) | Clay (<0.002mm) | |||
ca | mg | k | Na | ||||||||||||||
meg/100g | |||||||||||||||||
A1 | 0-20 | 6.1 | 5.4 | 0.15 | 15 | 16 | 0.65 | 1.5 | 57.1 | 35.1 | 10.8 | 14 | 11.5 | 48.5 | |||
B21 | 20-50 | 7.1 | 6.3 | 0.18 | 15 | 20 | 0.36 | 2.4 | 56.7 | 31.6 | 10.4 | 11.3 | 5.5 | 58 | |||
B22 | 50-80 | 7.5 | 6.9 | 0.67 | 0.13 | 14 | 21 | 0.33 | 5.5 | 58.2 | 30.5 | 10 | 11.3 | 6 | 68 | ||
B31 | 80-130 | 7.4 | 7 | 1.4 | 0.31 | 9.5 | 15 | 0.28 | 7 | 47.9 | 23.1 | 19.1 | 20.6 | 6 | 51.5 |