VIT2
 | Location: Warrabilla |
| Aust. Soil Class: Vertic (& Sodic), Eutrophic, Red CHROMOSOL | |
 VIT2 Landscape |
Soil Profile Morphology:
Surface Soil
A11 | 0-2 cm | Dark brown (7.5YR3/2); light fine sandy clay loam; firm to very firm consistence (dry); abrupt change to: |  Vit2 profile |
A12 | 2-12 cm | Dark brown (7.5YR3/3); with variable sporadic bleaching; light fine sandy clay loam; weak coarse subangular blocky; weak consistence (slightly moist); variable sporadic bleach; pH 6.3; abrupt change to: | |
| Subsoil | |||
B21 | 12-18 cm | Dusky red (2.5YR3/4); light medium clay; moderate - strong coarse to medium angular blocky; weak to firm consistence (slightly moist); pH 5.6; gradual change to: | |
B22 | 18-30 cm | Dusky red (2.5YR3/4); medium heavy clay; weak to moderate very coarse prismatic, parting to moderate coarse subangular blocky structure; firm consistence (moist); few (1-2%) manganese flecks; pH 6.1; gradual change to: | |
B23 | 30-50 cm | Yellowish red (5YR4/6); medium heavy clay; moderate coarse subangular blocky, parting to moderate very fine lenticular structure; firm to very firm consistence (moist); pH 8.3; gradual change to: | |
B24 | 50-60 cm | Yellowish red (5YR4/6); heavy clay; very firm consistence (moist); slickensides present. | |
- Strong profile texture contrast between surface (A) horizons and upper subsoil (B21) horizon.
- Vertic properties (lenticular peds and slickensides in deeper subsoil.
Soil Profile Characteristics:
| pH | Salinity Rating | Sodicity | Dispersion |
Surface (A12 horizon) | Slightly Acid | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Slightly Acid | Very Low | Non-Sodic | None1 |
Deeper subsoil (at 30-50 cm) | Moderately Alkaline | Very Low | Sodic | Strong - Complete |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||
meq/100g | ||||||||
A11 | 0-2 | | | | | | | |
A12 | 2-12 | 6.3 | 5.6 | 0.09 | 5.2 | 1.3 | 0.87 | 0.21 |
B1 | 12-18 | 5.6 | 4.7 | 0.09 | 4.2 | 3.1 | 0.88 | 0.50 |
B21 | 18-30 | 6.1 | 5.1 | 0.10 | 4.5 | 4.4 | 0.95 | 0.80 |
B22 | 30-50 | 8.3 | 7.3 | 0.15 | 6.9 | 8.2 | 1.2 | 11 |
B23 | 50-60 | | | | | | | |
Horizon | Horizon Depth (cm) | Exchangeable Aluminium (mg/kg) | Exchangeable Acidity (meq/100g) | Field Capacity pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.2-2.0 mm) | Fine Sand (0.02-0.2 mm) | Silt (0.002-0.02 mm) | Clay (<0.002 mm) |
A11 | 0-2 | | | | | | | | |
A12 | 2-12 | <10 | 5.0 | | | 6 | 55 | 21 | 14 |
B1 | 12-18 | 43 | 7.3 | | | 4 | 40 | 19 | 36 |
B21 | 18-30 | 12 | 6.6 | | | 4 | 35 | 15 | 41 |
B22 | 30-50 | | | | | 2 | 27 | 19 | 50 |
B23 | 50-60 | | | | | | | | |
Management Considerations:
Subsoil (B) Horizon
- The upper subsoil is non-sodic (but disperses slightly after remoulding).
- Profile described by Mark Imhof and Kevin Powell (December 2004).
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