Location: Haven
Soil Type: Haven Sandy Loam (shallow phase)
Australian Soil Classification: Calcic, Mesonatric, Brown SODOSOL
Northcote Factual Key: Dy 2.33
Great Soil Group: solodised solonetz
Mapping Unit: Haven sandy clay loam dominant, Haven sandy loam sub-dominant complex.
General Landscape Description: Level area in an extensive interdune swale situation.
Site Description: Originally under pasture. This site is six kilometres south of Horsham adjacent to the Henty Highway.
Geology: Late Tertiary to Quaternary. Quaternary Shepparton Formation: fluvial silt, sand and minor gravel.
Native Vegetation: Originally a tall woodland formation of Grey Box (Eucalyptus microcarpa), Buloke (C. luehmannii) and Yellow Gum (E. leucoxylon).
IS30 Landscape |
A1 | 0-5 cm | Dark brown (10YR3/3); sandy loam; hardsetting surface condition; weak blocky structure; strong consistence dry, slightly sticky consistence wet; pH 6.4; sharp and wavy change to: | IS30 Profile |
Subsoil | |||
B1 | 5-20 cm | Strong brown (7.5YR5/6) sporadically bleached (10YR7/4); medium clay; moderate coarse columnar structure; strong consistence dry, slightly sticky consistence wet; pH 8.4; gradual change to: | |
B21 | 20-35 cm | Strong brown (7.5YR5/6); sandy clay; coarse columnar structure; strong consistence dry, slightly sticky consistence wet; pH 8.0: | |
B22 | 35-55 cm | Strong brown (7.5YR5/6); sandy clay; subplastic; coarse columnar structure; strong consistence dry, slightly sticky consistence wet; pH 8.9; gradual change to: | |
B31k | 55-85 cm | Brownish yellow (10YR6/6); sandy clay; weak blocky structure; strong consistence dry, slightly sticky consistence wet; contains a few (2-10 %) soft carbonates; pH 9.3; gradual change to: | |
B32 | 85-130 cm | Brownish yellow (10YR6/6) with pale yellow (5Y7/3) mottles; light clay; weak blocky structure; strong consistence dry, slightly sticky consistence wet; contains very few (< 2 %) soft carbonates; pH 9.2. |
pH | Salinity Rating | |||
Surface (A1 horizon) | Slightly Acid | Medium | Non-Sodic | None 1 |
Subsoil (B21 horizon) | Moderately Alkaline | Medium | Strongly Sodic | Complete |
Deeper Subsoil (at 1 m) | Very Strongly Alkaline | Very High | Very Strongly Sodic | None 2 |
The surface soil is slightly acid. The subsoil is moderately alkaline becoming very strongly alkaline with depth. | The salinity rating is medium in the surface and upper subsoil becoming very high with depth. | The surface is non-sodic. The subsoil is strongly sodic. | The clay content increases markedly at the surface / subsoil boundary then becomes more sandy at 20 cm depth. |
Horizon | Sample Depth cm | pH | EC dS/m | Sodium Chloride % | Exchangeable Calcium cmol-/kg | Exchangeable Magnesium cmol-/kg | Exchangeable Potassium cmol-/kg | Exchangeable Sodium cmol-/kg | Exchangeable Aluminium mg/kg | Exchangeable Acidity cmol-/kg | Field Capacity -30okPa | Permanent Wilting Point -1500okPa | Coarse Sand % | Fine Sand % | Silt % | Clay % | |
H2O | CaCl2 | ||||||||||||||||
A1 | 0–5 | 6.4 | NA | 0.18 | 0.03 | 1.9 | 2.6 | 0.3 | 0.4 | NA | 7.9 | 12.6 | 5.7 | 39 | 44 | 3 | 13 |
B21 | 5–20 | 8.4 | NA | 0.15 | 0.01 | 2.4 | 6.9 | 2.3 | 0.5 | NA | 4.5 | NA | 20.1 | 9 | 18 | 10 | 58 |
B22 | 20–35 | 8 | NA | 0.34 | 0.07 | 2.9 | 9.8 | 1 | 3.6 | NA | 4 | NA | 14.6 | 30 | 35 | 1 | 34 |
B23 | 35–55 | 8.9 | NA | 0.69 | 0.12 | 2.6 | 11.9 | 1 | 5.1 | NA | 2.7 | NA | 15.7 | 32 | 28 | 2 | 38 |
B31k | 55–85 | 9.3 | NA | 0.97 | 0.16 | 2.9 | 11.4 | 0.7 | 5.2 | NA | NA | NA | 14.8 | 26 | 34 | 1 | 35 |
B32 | 85–130 | 9.2 | NA | 1.18 | 0.21 | 2.7 | 15.6 | 0.8 | 7.4 | NA | NA | NA | 17.1 | 25 | 27 | 3 | 42 |