Location: Birchip. | Australian Soil Classification: Vertic (& Sodic), Calcic, Grey DERMOSOL. |
Geology: Quaternary (Woorinen Formation). | General Landscape Description: Level plain. |
Site Description: Grazing paddock. | Native Vegetation: Mallee (with Casuarina). |
Site ORZC14 Landscape |
Ap | 0-12 cm | Dark greyish brown (10YR4/2); light clay; moderate coarse to medium blocky structure; hardsetting surface; firm to very firm consistence (dry); no surface cracking evident; non-calcareous; pH 7.6; clear change to: | Site ORZC14 Profile |
Subsoil | |||
B21 | 12-40 cm | Dark grey (10YR4/1); medium clay; weak-moderate very coarse prismatic, parting to moderate-strong coarse to medium blocky and moderate fine blocky structure; non-calcareous; very firm to strong consistence (dry); pH 8.4; gradual change to: | |
B22 | 40-90 cm | Dark grey (10YR4/1); fine sandy light clay; weak-moderate very coarse prismatic, parting to moderate coarse blocky structure; some slickensides present; moderately calcareous; strong consistence (dry); pH 9.1; gradual change to: | |
B23k | 90-130 cm | Light yellowish brown (10YR6/4); light clay; moderate strong coarse to medium blocky structure; few (5-10%) soft and semi-hard carbonate segregations; moderately calcareous; firm consistence (dry); pH 9.3. |
pH | Salinity Rating | |||
Surface soil (Ap horizon) | Slightly Alkaline | Low | Non-Sodic | None1 |
Upper subsoil 12-40 cm | Moderately Alkaline | Low-Medium | Strongly Sodic | Slight2 |
Deeper subsoil (at 40-90 cm) | Very Strongly Alkaline | High | Strongly Sodic | None2 |
Deep subsoil (at 90-130 cm) | Very Strongly Alkaline | High-Very High | Strongly Sodic | None2 |
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 - 2.0 mm) | Fine Sand (0.02 -0.2 mm) | Silt (0.002 -0.02 mm) | Clay (<0.002 mm) | |||
Ca | Mg | K | Na | |||||||||||||
meq/100g | ||||||||||||||||
Ap | 0-12 | 7.6 | 7.1 | 0.26 | <0.01 | 13 | 4.5 | 2.1 | 0.8 | 1.6 | 30 | 15 | 23 | 26 | 9 | 38 |
B21 | 12-40 | 8.4 | 7.6 | 0.55 | 0.06 | 16 | 9.4 | 1.4 | 6.2 | 2.8 | 44 | 25 | 8 | 13 | 17 | 55 |
B22 | 40-90 | 9.1 | 8.3 | 0.75 | 0.11 | 9.1 | 8.1 | 1.2 | 9.2 | 6.5 | 42 | 21 | 17 | 23 | 35 | 22 |
B23k | 90-130 | 9.3 | 8.6 | 1.2 | 0.21 | 6.5 | 8.8 | 1.2 | 9.7 | 9.7 | 38 | 19 | 25 | 19 | 12 | 38 |