Location: Birchip | |
Australian Soil Classification: Vertic (& Epihypersodic), Pedal, Hypocalcic CALCAROSOL (clayey surface texture) | |
General Landscape Description: Level Plain | Site Description: Cultivation paddock of demonstration site |
Geology: Quaternary aeolian and alluvial deposits |
LWA20 Landscape |
A1 | 0-10cm | Brown (7.5YR4/6); light clay; weak (10-20 mm) angular blocky structure, parting to moderate fine (5-10 mm) polyhedral structure; firm consistence (moderately moist); moderately calcareous effervescence of fine earth; abrupt change to: | LWA20 Profile |
Subsoil | |||
B21 | 10-35 cm | Brown (7.5YR5/4) with black (7.5YR2.5/1) mottles; light-medium clay; moderate medium (10-20 mm) sub-angular blocky structure; firm consistence (moderately moist); moderately calcareous effervescence of fine earth; clear change to: | |
B22 | 35-70 cm | Brown (7.5YR5/4) with black (7.5YR4/2) mottles; medium clay; strong coarse (50-100 mm) prismatic, parting to strong coarse (20-50 mm) sub-angular blocky structure; very firm consistence (dry); very few (<2%) soft calcareous segregations with very few (<2%) soft manganiferous segregations; gradual change to: | |
B23 | 70-100 cm | Brown (10YR5/3); medium clay; weak (50-100 mm) prismatic structure, parting to moderate coarse (20-50 mm) angular blocky structure; weak consistence (moderately moist); very few (<2%) soft calcareous segregations; distinct slickensides common; diffuse change to: | |
B24 | 100-140 cm | Light olive brown (2.5Y5/3) with olive grey (5Y5/2) mottles; medium-heavy clay; weak coarse (50-100 mm) prismatic, parting to moderate coarse (20-50 mm) angular blocky structure; weak consistence (moderately moist); slight calcareous effervescence of fine earth; distinct slickensides common. |
pH | Salinity Rating | |||
Surface (A1 horizon) | Strongly Alkaline | low | Marginally Sodic | none 1 |
Subsoil (B21 horizon) (10-35 cm) | Very Strongly Alkaline | high | Strongly Sodic | none 2 |
Deeper subsoil (at 100-140 cm) | Very Strongly Alkaline | Very high | Strongly Sodic | slight |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
Meq/100g | |||||||||
A1 | 0-10 | 8.9 | 8.1 | 0.24 | 31 | 8.1 | 1.8 | 2.5 | |
B21 | 10-35 | 9.4 | 8.7 | 1.1 | 0.2 | 7.2 | 13 | 1.1 | 9.4 |
B22 | 35-70 | 9.7 | 9 | 1.4 | 0.22 | 3.4 | 15 | 1.4 | 14 |
B23 | 70-100 | 9.5 | 9 | 1.8 | 0.3 | 35 | 15 | 16 | 16 |
B24 | 100-140 | 9.3 | 8.8 | 1.2 | 0.38 | 4.1 | 17 | 1.7 | 22 |
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 | 6 | 39.2 | 17.8 | 20 | 19 | 11 | 37 |
B21 | 10-35 | 31 | 44.9 | 26.7 | 14 | 15 | 6 | 43 |
B22 | 35-70 | 41 | 49.3 | 22.7 | 15 | 15 | 7 | 48 |
B23 | 70-100 | 44 | 52.6 | 23.9 | 14 | 15 | 16 | 46 |
B24 | 100-140 | 49 | 54.1 | 25.1 |