ESAS10
| Location: Curyo |  |
| Australian Soil Classification: Sodic, Hypercalcic, Red DERMOSOL | |
| General Landscape Description: Upper slope of gently undulating rise | Site Description: Cropping paddock – BCG Field Day Site 2008. Conventionally tilled until 2 years ago and now no-till. |
| Geology: Quaternary aeolian deposits overlying Tertiary Parilla Sandstone | |
ESAS10
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Brown (7.5YR5/4); loamy light sand; weak to firm consistence (dry); slight dispersion after remoulding; very thin surface crust at 7.5 cm; no effervescence; pH 7; sharp change to: |  ESAS10 Profile |
| A2 | 10-14 cm | Discontinuous layer; yellowish red (5YR5/6); sand; pH 7.4; sharp change to: | |
| |||
| B1 | 10-20 cm | Yellowish red (5YR5/8); clay sand; weak very coarse prismatic structure, parting to weak to moderate very coarse to coarse blocky structure, parting weak very coarse prismatic structure; weak (moist) to strong (dry) consistence; strong dispersion after remoulding; roots to 80 cm; pH 8.2; clear change to: | |
| B21 | 20-40 cm | Yellowish red (5YR5/6); sandy loam (clayey) increasing to sandy clay loam with depth; weak to moderate very coarse to coarse prismatic structure; strong dispersion after remoulding; pH 9.4: | |
| B22 | 40-55 cm | Red (2.5YR4/6) with brown (7.5YR5/4) mottles; sandy clay loam; weak to moderate very coarse prismatic structure; moderately calcareous; pH 9.7: | |
| B23 | 55-60 cm | Yellowish red (5YR5/6); medium clay to medium heavy clay; strong coarse to medium subangular blocky structure; slightly calcareous; pH 9.8: | |
| B24k | 60-85 cm | Red (2.5YR5/6); medium clay; very abundant (40-50%) fine soft- earth and semi-hard carbonates; pH 9.7; clear change to: | |
| B25k | 85-110 cm | Yellowish red (5YR5/6); very abundant (40%) fine-soft earth and semi-hard carbonates; pH 9.8: | |
| B26k | 11-130 cm | Yellowish red (5YR5/6); very abundant (40%) fine-soft earth and semi-hard carbonates; pH 9.8. | |
Key Profile Features:
- Gradual increase in texture (i.e. clay %) with depth down the profile.
- Large amounts of carbonate (lime) in deeper profile.
| pH | Salinity Rating | ||
Surface (A1 horizon) | Neutral | Very Low | Non-Sodic | None1 |
Upper Subsoil (B21 horizon) | Extremely Alkaline | Very Low | Strongly Sodic | Moderate2 |
Deeper subsoil (at 110-130 cm) | Extremely Alkaline | Medium | Strongly Sodic | - |
2 strong dispersion after remoulding
|
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | Organic Carbon g/100g | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A1 | 0-10 | 7 | 6.3 | <0.05 | 0.33 | 2.1 | 0.68 | 0.33 | <0.05 |
A2 | 10-20 | 7.4 | 6.9 | 0.09 | | | | | |
B1 | 10-20 | 8.2 | 6.9 | 0.09 | | 3.1 | 2.4 | 0.32 | 0.99 |
B21 | 20-40 | 9.4 | 8.2 | 0.16 | | 3.1 | 4.5 | 0.56 | 2.7 |
B22 | 40-55 | 9.7 | 8.8 | 0.38 | | 3.1 | 5.3 | 0.78 | 3.1 |
B23 | 55-60 | 9.8 | 8.9 | 0.67 | | 3.9 | 7 | 1.1 | 5.2 |
B24k | 60-85 | 9.7 | 8.8 | 0.65 | | 4.6 | 7 | 1.1 | 4.5 |
B25 | 85-110 | 9.8 | 8.8 | 0.57 | | 4 | 6.4 | 1 | 4.2 |
B26 | 110-130 | 9.8 | 8.7 | 0.53 | | 3.7 | 5.6 | 0.86 | 3.6 |
Horizon | Horizon Depth | Boron mg/kg | Field pF2.5 g/100g | Wilting Point pF4.2 g/100g | Coarse Sand (0.2-2.0mm) % | Fine Sand (0.02-0.2mm) % | Silt (0.002-0.02mm) % | Clay (<0.002mm) % |
A1 | 0-10 | 0.5 | 11.5 | 1.8 | | | | |
A2 | 10-20 | 0.4 | 11.6 | 1.4 | | | | |
B1 | 10-20 | 1.4 | 11.7 | 4.8 | | | | |
B21 | 20-40 | 4.4 | 19.6 | 7.9 | | | | |
B22 | 40-55 | 7.3 | 22 | 8.4 | | | | |
B23 | 55-60 | 12 | 32.2 | 15.8 | | | | |
B24k | 60-85 | 9.8 | 33 | 15.9 | | | | |
B25 | 85-110 | 13 | 35.6 | 16.7 | | | | |
B26 | 110-130 | 11 | | | | | | |
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