Location: Cooriemungle
Australian Soil Classification: Bleached-Vertic (& Acidic-Mottled), Eutrophic, Grey DERMOSOL/Calcic Clay
General Landscape Description: Gently undulating rises.
Site Description: Dairy grazing paddock (with mole drainage).
Geology: Tertiary - Gellibrand Marl.
SW46 Landscape |
A1 | 0-15 cm | Very dark brown (10YR3/2); very fine sandy clay loam; moderate medium blocky, parting to moderate fine polyhedral structure; firm consistence moist; pH 5.8; clear change to: |
SW46 Profile |
A2 | 15-30 cm | Brown (10YR5/3), conspicuously bleached (10YR7/1d); rusty root channel mottling; heavy silty clay loam; weak coarse blocky structure; firm consistence moist; pH 5.5; clear change to: | |
Subsoil | |||
B21 | 30-50 cm | Grey (10YR5/1); silty clay; strong coarse blocky, parting to strong fine blocky structure; firm consistence moist; pH 5.5; clear change to: | |
B22 | 50-80 cm | Grey (10YR6/1) with many brownish yellow (10YR6/6) mottles; medium clay; strong lenticular structure; many slickensides; pH 5.5; gradual change to: | |
B23 | 80-100 cm | Grey (10YR6/1) with many brownish yellow (10YR6/6) mottles; light medium clay; strong lenticular structure; many slickensides; pH 5.9; gradual change to: | |
B24 | 100-110 cm | Grey (10YR6/1) with many brownish yellow (10YR6/6) mottles; light medium clay; pH 6.3; clear change to: | |
B3k | 110+ cm | Brownish yellow (10YR6/6); light clay; contains calcareous / silica nodules; pH 8.5. |
pH | Salinity Rating | |||
Surface (A1 horizon) | Moderately Acid | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Strongly Acid | Very Low | Non-Sodic | None |
Deeper Subsoil (at 1 m) | Moderately Acid | Very Low | Non-Sodic | None |
The surface is moderately acid. The upper subsoil is strongly acid becoming moderately acid at 80 cm. | The salinity rating throughout the profile is very low. | The clay content gradually increases with depth, down this profile. |
Horizon | Horizon Depth (cm) | pH (water) | pH CaCl2 | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-15 | 5.8 | 5 | 0.09 | 7.5 | 2 | 0.3 | 0.1 | |
A2 | 15-30 | 5.5 | 4.6 | 0.06 | 2.7 | 1.6 | 0.2 | 0.1 | |
B21 | 30-50 | 5.5 | 4.4 | 0.06 | 4 | 3.4 | 0.3 | 0.3 | |
B22 | 50-80 | 5.5 | 4.5 | 0.1 | 7.1 | 5.5 | 0.2 | 0.7 | |
B23 | 80-100 | 5.9 | 4.9 | 0.14 | 9.3 | 6.6 | 0.1 | 1.3 | |
B24 | 100-110 | 6.3 | 5.4 | 0.22 | 12 | 7.6 | 0.1 | 1.8 | |
B3k | 110+ | 8.5 | 7.8 | 0.33 | 0.02 | 16 | 7.3 | 0.2 | 2.4 |
Horizon | Horizon Depth (cm) | Field Capacity pF2.5 | Wilting Point pF4.2 | Oxidisable Organic Carbon % | Total Nitrogen % | Exchangeable Acidity meq/100g | 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 | 0-15 | 40 | 20 | 4.2 | 0.38 | 2 | 31 | 33 | 26 | |
A2 | 15-30 | 33 | 17 | 1 | 37 | 38 | 23 | |||
B21 | 30-50 | 29 | 10 | 11 | 1 | 27 | 30 | 39 | ||
B22 | 50-80 | 44 | 24 | 1 | 16 | 20 | 61 | |||
B23 | 80-100 | 46 | 24 | 1 | 13 | 19 | 65 | |||
B24 | 100-110 | 48 | 25 | 1 | 13 | 19 | 64 | |||
B3k | 110+ | 44 | 25 | 2 | 22 | 15 | 46 |