WLRA134
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| WLRA134 |  Gypsic, Self-mulching, Grey VERTOSOL | |
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Location | Cnr Henty Highway and Minyip Dimboola Road, Kewell North, Western Victoria | |||
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Landform | Undulating plain | |||
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Geology | Quaternary Woorinen Formation: aeolian dune sand, calcareous clay | |||
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Element | Plain | |||
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Slope | 1.5% | |||
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Aspect | East | |||
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A11 | 0–4 | Dark grey (10YR4/1); light medium clay; strong fine granular structure; rough ped fabric; loose dry consistence; pH 7.3; abrupt and irregular change to:
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A12 | 4–18 | Dark grey (10YR4/1); medium heavy clay; strong coarse platy parting, to coarse angular blocky structure; rough ped fabric; firm dry consistence; contains common very fine roots; pH 7.5; gradual and irregular change to:
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B21 | 18–40 | Dark grey (10YR4/1); heavy clay; strong medium prismatic parting, to coarse angular blocky structure; rough ped fabric; strong consistence, dry; contains common very fine roots; pH 8.8; clear and irregular change to:
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B22 | 40–60 | Dark grey (10YR4/1); light clay; strong medium prismatic parting, to coarse angular blocky structure; rough and smooth ped fabric; strong consistence, dry; contains few coarse calcareous soft segregations; many faint slickensides evident; common very fine roots present; pH 8.9; clear and irregular change to:
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B23k | 60–80 | Greyish brown (10YR5/2); light medium clay; strong medium prismatic, parting to coarse angular blocky structure; rough ped fabric; firm consistence moderately moist; contains many coarse calcareous soft segregations; many faint slickensides evident; a few very fine roots present; pH 8.8; clear and irregular change to:
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B24 | 80–145+ | Pale brown (10YR6/3); light medium clay; strong very coarse lenticular, parting to coarse polyhedral structure; smooth ped fabric; firm consistence moderately moist; contains very many gypseous veins; many faint slickensides evident; no roots (except in biopores); pH 8.1 increasing to pH 8.4 with depth.
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| Management Considerations: | ||||
- Cracking clay soil
- Friable (self mulching) surface
- Alkaline subsoil with gypseous veins at depth
- Subsoil calcareous and strongly sodic
- Boron levels higher in subsoil, more significant at depth
Horizon | Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl % | Exchangeable Cations cmol-/kg | Field Capacity (pF2.5) | Wilting Point (pF4.2) | Coarse Sand % | Fine Sand % | Silt % | Clay % | |||
Ca | Mg | K | Na | ||||||||||||
A11 | 0-4 | 7.3 | 6.9 | 0.26 | 0.08 | 25 | 6.2 | 3 | 0.7 | 32.5 | 21.8 | 16 | 10.8 | 15.3 | 52.8 |
A12 | 4-18 | 7.5 | 6.9 | 0.43 | 0.13 | 25 | 9.2 | 1.5 | 3.1 | 40.9 | 27.1 | 17.9 | 11.7 | 15.5 | 51 |
B21 | 18-40 | 8.8 | 8.1 | 0.67 | 0.2 | 21 | 10 | 1.2 | 8.8 | 49.6 | 24.9 | 17.8 | 12.1 | 15 | 51.5 |
B22 | 40-60 | 8.9 | 8.3 | 1.2 | 0.36 | 16 | 10 | 1.3 | 12 | 50.3 | 23 | 18.1 | 12.1 | 18 | 50.5 |
B23k | 60-80 | 8.8 | 8.4 | 1.7 | 0.51 | 13 | 9.7 | 1.4 | 13 | 51.4 | 25 | 17.4 | 12 | 12 | 52 |
B24 | 80-100 | 8.1 | 8.0 | 3.9 | 1.2 | 16 | 9.6 | 1.3 | 14 | 46.2 | 23.1 | 21.1 | 10.3 | 11.5 | 50 |
B24 | 100-120 | 8.4 | 8.1 | 2.7 | 0.81 | 15 | 10 | 1.4 | 16 | 50.3 | 25.5 | 18.8 | 10 | 11 | 54.5 |
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