Group: Birchip Cropping Demonstration Group | |
Aust. Soil Class.: Epihypersodic, Pedal, Hypercalcic CALCAROSOL | Northcote Factual Key:Dy 2.13 |
A1 | 0-10 cm | Dark brown (10YR3/3); heavy clay loam (sandy); hardsetting and massive; strong consistence dry; pH 8.5; sharp and wavy change to: | MP23 Profile |
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B21 | 10-25 cm | Yellowish brown (10YR5/4); light medium clay; moderate coarse prismatic, breaking down to medium blocky structure; strong consistence dry; pH 9.4; clear and wavy change to: | |
B22k | 25-100 cm | Light yellowish brown (10YR6/4); light medium clay; moderate prismatic structure; strong consistence dry; contains many soft carbonates; pH 9.9; sharp and wavy boundary to: | |
B23 | 100-150 cm | Very pale brown (10YR7/3) and reddish yellow (5YR6/8) mottles; medium clay; coarse prismatic structure; strong consistence dry; contains a band of manganese segregations in 145-150cm zone; pH 9.5; gradual change to : | |
B31 | 150-190 cm | Yellowish red (5YR5/8); heavy clay; strong very coarse prismatic structure; very strong consistence dry; pH 5.7. |
Key Profile Features:
pH | Salinity Rating | |||
Surface (A1 horizon) | Moderately Alkaline | Low | Non-Sodic | None1 |
Subsoil (B21 horizon) | Very Strongly Alkaline | Low | Sodic | None2 |
Deeper subsoil (at 1 m) | Extremely Alkaline | Very High | Strongly Sodic | Strong |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A1 | 0-10 | 8.5 | 7.8 | 0.1 | 19.6 | 4.6 | 2.5 | 0.2 | |
B21 | 10-25 | 9.4 | 8.3 | 0.24 | 14.2 | 11.1 | 1.1 | 3.2 | |
B22k | 25-100 | 9.9 | 8.9 | 0.77 | 2.7 | 9.8 | 1.1 | 10.4 | |
B23 | 100-150 | 9.5 | 8.9 | 1.5 | 0.27 | 3.8 | 12.3 | 1.6 | 14.3 |
B31 | 150-190 | 5.7 | 5.2 | 1.54 | 0.3 | 2.1 | 8.6 | 0.8 | 7.5 |
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 | 27.7 | 15 | 32 | 27 | 4 | 31 | |
B21 | 10-25 | 34.8 | 21.7 | 27 | 19 | 4 | 40 | |
B22k | 25-100 | 38.4 | 23.8 | |||||
B23 | 100-150 | 46.6 | 27.6 | |||||
B31 | 150-190 |