Group: Birchip Cropping Group | Location: Curyo |
Australian Soil Classification: Epihypersodic, Pedal, Calcic CALCAROSOL. | |
General Landscape Description: Very gently undulating plain within the Culgoa Land System (Rowan and Downes, 1963). |
A1 | 0-10 cm | Dark brown (7.5YR4/4); heavy clay loam (sandy); hardsetting and massive; some surface cracking evident; very firm consistence dry; pH 8.2; sharp and wavy change to: | Site MP25 Profile |
Subsoil | |||
B21 | 10-20 cm | Dark brown (7.5YR4/4); medium clay; moderate medium prismatic, parting to blocky structure; strong consistence dry; pH 9.3; clear change to: | |
B22 | 20-50 cm | Brown (7.5YR5/4); medium clay; moderate medium blocky structure; strong consistence dry; contains a few soft carbonates; pH 9.7; clear change to: | |
B31 | 50-100 cm | Reddish yellow (5YR6/8); heavy clay; pH 9.9. |
pH | Salinity Rating | Sodicity | Dispersion | |
Surface (A1 horizon) | moderately alkaline | very low | non-sodic | none1 |
Subsoil (B21 horizon) | very strongly alkaline | low-medium | strongly sodic | slight |
Deeper subsoil (at 75 cm) | extremely alkaline | low-medium | strongly sodic | strong |
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC ds/m | NaCI % | Exchangeable Cations | 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) | |||
Ca | Mg | K | Na | ||||||||||||
meq/100g | |||||||||||||||
A1 | 0-10 | 8.2 | 7.6 | 0.15 | 14.9 | 5.6 | 2 | 0.9 | 33 | 12 | 28 | 27 | 4 | 34 | |
B21 | 10-20 | 9.3 | 8.4 | 0.44 | <0.05 | 12.3 | 12.6 | 1.6 | 5.9 | 47 | 22 | 24 | 15 | 4 | 45 |
B22 | 20-50 | 9.7 | 9 | 0.76 | 0.05 | 5.8 | 16 | 2 | 12.1 | 57 | 24 | ||||
B31 | 50-100 | 9.9 | 9.1 | 0.64 | <0.05 | 4.3 | 13.8 | 1.7 | 12 |