CRC6
Location: Warrayure
Australian Soil Classification: Natric, Sodosolic, Salic HYDROSOL
Soil Profile Morphology:
Surface Soil
| A1 | 0-10 cm | Very dark greyish brown (10YR3/2); light fine sandy loam; weak to firm consistence (dry); hardsetting surface condition; thin sporadic bleach at base; some rusty root channel mottling; pH 5.9; abrupt change to: |  Site CRC6 Profile |
| Subsoil | |||
| B1 | 10-35 cm | Black (10YR2/1) with diffuse brownish yellow (10YR6/6) mottles; fine sandy light clay; strong very coarse prismatic, parting to moderate to strong coarse blocky structure; firm consistence (moderately moist) to strong consistence (dry); pH 6.6; clear change to: | |
| B21 | 35-50 cm | Dark greyish brown (10YR4/2); medium clay; strong very coarse prismatic, parting to moderate to strong coarse blocky structure; pH 7.0; gradual change to: | |
| B22 | 50-75 cm | Pale brown (10YR6/3); light clay; moderate coarse prismatic structure; few (2%) ferruginous nodules (2-5 mm); pH 7.1; some organic staining along cracks; gradual change to: | |
| B23 | 75-100 cm | Pale brown (10YR6/3); light clay; pH 7.0; gradual change to: | |
| B24 | 100-120 cm | Pale brown (10YR6/3) with diffuse brownish yellow (10YR6/8) mottles; light clay; pH 6.9. | |
Key Profile Features:
- Strong texture contrast between surface horizons and subsoil (B21) horizon.
Soil Profile Characteristics:
 | pH | Salinity Rating | ||
Surface (A1 horizon) | Moderately Acid | Very High | Sodic | None1 |
Subsoil (35-50 cm horizon) | Neutral | Extremely High | Strongly Sodic | None1 |
Deeper subsoil (at 100-120 cm) | Slightly Acid | Extremely High | Sodic | None1 |
 |
Chemical and Physical Analysis:
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl | Exchangeable Aluminium ppm | Exchangeable Acididty meq/100g | Exchangeable Cations | Coarse Sand (0.2-2.0 mm) % | Fine Sand (0.02-0.2 mm) % | Silt (0.002-0.02 mm) % | Clay (<0.002 mm) % | Field Capacity % w/w | Wilting Point % w/w | |||
Ca | Mg | K | Na | ||||||||||||||
meq/100g | |||||||||||||||||
A1 | 0-10 | 5.9 | 5.4 | 0.65 | 0.15 | <10 | 5.9 | 5.1 | 4.9 | 0.2 | 1.2 | 14 | 46 | 17 | 12 | 33 | 16 |
B1 | 10-35 | 6.6 | 6.2 | 0.91 | 0.23 | | 3.0 | 3.7 | 5.6 | <0.1 | 0.9 | 23 | 43 | 15 | 16 | 23 | 9 |
B21 | 35-50 | 7.0 | 6.7 | 1.6 | 0.38 | | 4.2 | 4.7 | 10 | 0.2 | 3.3 | 18 | 32 | 5 | 41 | 36 | 17 |
B22 | 50-75 | 7.1 | 6.8 | 2.1 | 0.54 | | 3.8 | 4.5 | 12 | 0.3 | 5.7 | 18 | 33 | 13 | 34 | 39 | 17 |
B23 | 75-100 | 7.0 | 6.8 | 2.1 | 0.51 | | 2.9 | 3.7 | 9.2 | <0.1 | 1.6 | 21 | 38 | 14 | 24 | 31 | 13 |
B24 | 100-120 | 6.9 | 6.7 | 1.8 | 0.48 | | 2.3 | 3.5 | 8.7 | <0.1 | 1.4 | 20 | 40 | 17 | 22 | 30 | 12 |
Management Considerations:
Whole Profile
- The soil profile has very high to extremely high levels of soluble salts throughout.
- The coarsely structured upper subsoil is strongly sodic and dispersive which will restrict root movement into the subsoil. Dispersion does not occur due to the high levels of soluble salts which will result in less restricted water movement than what would be expected for a strongly sodic soil.
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