WCFA3
Location: Lower Norton
Australian Soil Classification: Hypercalcic, Mottled-Subnatric, Red SODOSOL
General Landscape Description: Rise of a ridge spur.
Site Description: Lower slope of a hillslope.
Geology: Parilla Sand
WCFA3 Landscape
Soil Profile Morphology:
| Surface Soil |  WCFA3 profile | ||
| A1 | 0-15 cm | Dark brown (7.5YR4/3); sandy loam; loose (cultivated) surface condition; weak very fine sub-angular blocky structure; rough fabric; firm consistence dry; contains a few, fine gravelly sub-rounded ferruginous fragments; pH 7.2; sharp and smooth change to: | |
| Subsoil | |||
| B21 | 15-30 cm | Red (10R4/6) with many medium distinct pale brown (10YR6/3) and yellowish brown (5YR4/6) mottles; medium heavy clay; moderate coarse prismatic, parting to moderate medium prismatic structure; smooth fabric; strong consistence dry; contains very few fine gravelly sub-rounded ferruginous fragments; pH 6.9; clear and smooth change to: | |
| B22 | 30-45 cm | Weak red (10R4/4) with common fine to medium, faint orange and grey mottles; heavy clay; moderate to strong coarse prismatic, parting to moderate to strong medium prismatic structure; smooth fabric; very strong consistence dry; contains very few fine gravelly sub-rounded ferruginous fragments; pH 7.8; clear and tongued change to: | |
| B23k | 45-90+ cm | Medium clay; strong, very coarse blocky, parting to strong medium blocky structure; smooth and rough fabric; very strong consistence dry; contains many coarse to extremely coarse calcareous segregations in patches; very highly calcareous; pH 8.7. | |
Soil Profile Characteristics:
pH | Salinity Rating | |||
Surface (A1 horizon) | Slightly Alkaline | Low | Non-Sodic | None1 |
Subsoil (B21 horizon) | Slightly Acid | Low | Sodic | None2 |
Deeper Subsoil (at 55-100 cm) | Strongly Alkaline | Medium | Sodic | None |
|  | The salinity rating in the upper profile is low becoming medium at depth.
| | The surface is non-sodic. The subsoil is sodic. | | Boron content increases with depth. |
|
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC dS/m | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
A1 | 0-15 | 7.2 | 6.9 | 0.2 | - | 8.3 | 0.95 | 1.1 | 0.17 |
B21 | 15-30 | 6.9 | 6.4 | 0.18 | - | 9.2 | 6.6 | 0.88 | 1.4 |
B22 | 30-45 | 7.8 | 7.2 | 0.28 | <0.02 | 14 | 14 | 1.1 | 3.3 |
B23k | 45-90 | 8.7 | 8.3 | 0.58 | 0.04 | 8.6 | 12 | 0.76 | 3.7 |
Horizon | Horizon Depth (cm) | Oxidisable Organic Carbon % | Total Nitrogen % | Available Boron mg/kg | Field Capacity pF2.5 | Wilting Point pF4.2 | Coarse Sand (0.2-2.0 mm) | Fine Sand (0.02-0.2 mm) | Silt (0.002-0.02 mm) | Clay (<0.002 mm) |
A1 | 0-15 | 1.5 | 0.1 | 1 | 13.8 | 4.8 | 15 | 64 | 6 | 12 |
B21 | 15-30 | | | 2.5 | 26.4 | 15.4 | 11 | 38 | 5 | 42 |
B22 | 30-45 | | | 5.5 | 38.5 | 23.7 | | | | |
B23k | 45-90 | | | 7.4 | 31.7 | 16.9 | | | | |
Profile Described By: Nathan Robinson, Grant Boyle and John Martin (October 2006).
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