Location: Birchip. | Australian Soil Classification: Epicalcareous-Endohypersodic, Pedal, Calcic, CALCAROSOL. |
Geology: Woorinen Formation. | |
General Landscape Description: Location on westerly facing gentle slope within a gently undulating plain. This site represents the depression component of the gilgai microrelief (opposite site ORZC 3). | |
Site Description: Pasture (medic). |
Site ORZC4 Landscape |
A1 | 0-15 cm | Brown (7.5YR4/4); light medium clay; very weak consistence (dry); contains iron sandstone floaters at surface; pH 8.5; abrupt change to: | Site ORZC4 Soil Profile |
Subsoil | |||
B21 | 15-40 cm | Dark greyish brown (10YR4/2); medium clay; weak consistence (dry); pH 8.9; clear and wavy change to: | |
B22 | 40-100 cm | Pale brown (10YR6/3) with grey (10YR6/1) mottles; medium heavy clay; moderate coarse prismatic, parting to coarse blocky structure; strong consistence (dry); contains fine earth carbonates; sandy patches present; pH 9.3; gradual change to: | |
B23 | 100+ cm | Light yellowish brown (10YR6/4) with light brownish grey (10YR6/2) and yellowish red (5YR5/6) mottles; medium heavy clay; sand on ped faces; pH 9.5. |
pH | Salinity Rating | |||
Surface (A1 horizon) | Moderately Alkaline | Low | Non-Sodic | None |
Subsoil (B21 horizon) | Strongly Alkaline | Low | Strongly Sodic | None1 |
Deeper subsoil (at 1 m) | Very Strongly Alkaline | Very High | Strongly Sodic | Moderate |
|
Horizon | Horizon Depth (cm) | pH (water) | pH (CaCl2) | EC 1:5 | NaCI % | Exchangeable Cations | Boron mg/kg | Field Capacity pF 2.5 | Wilting Point pF 4.2 | Coarse Sand (0.2 - 2 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 | 0-15 | 8.5 | 8.0 | 0.21 | 31 | 7.3 | 2.1 | 0.65 | 2.0 | 38 | 18 | 15 | 23 | 16 | 38 | |
B21 | 15-35 | 8.9 | 8.2 | 0.30 | 0.02 | 17 | 8.3 | 1.2 | 3.0 | 2.0 | 38 | 18 | 17 | 24 | 10 | 44 |
B22 | 40-60 | 9.3 | 8.5 | 0.65 | 0.08 | 8.7 | 12 | 1.0 | 7.4 | 8.2 | 45 | 22 | 17 | 22 | 11 | 45 |
B23 | 80-100 | 9.5 | 8.7 | 0.61 | 0.26 | 6.3 | 10 | 1.2 | 14 | 16 | 43 | 25 | 12 | 18 | 15 | 52 |
B24 | 100+ | 8.7 | 8.1 | 1.9 | 0.31 | 6.1 | 8.8 | 1.0 | 12 | 13 |