Location: Longerenong
Australian Soil Classification: Epicalcareous-Endohypersodic, Self-Mulching, Grey VERTOSOL
Soil Map Unit: Kalkee Clay.
World Reference Base: VERTISOL
General Landscape Description: Very gently undulating plain.
Site Description: Flat, gilgai evident.
Native Vegetation: Sparse stands of remnant Buloke.
Geology: Quaternary alluvial and aeolian deposits.
Land Use: Long-term trial site for dryland cropping.
WWPS3 Landscape |
A1 | 0-10 cm | Dark grey (10YR4/1); self mulching surface condition with slight compaction evident; light clay; weak consistence moist; pH 8.2; clear change to: | WWPS3 Profile |
Subsoil | |||
B21 | 10-35 cm | Dark greyish brown (10YR4/2); medium clay; moderate medium to fine sub-angular blocky structure; weak to firm consistence moist; pH 8.5; clear change to: | |
B22 | 35-65 cm | Dark grey (10YR4/1); medium heavy clay; strong very coarse to coarse prismatic, parting to strong medium to fine sub-angular blocky structure; very firm consistence moist; slickensides in lower horizon; pH 9.0; gradual change to: | |
B23k | 65-95 cm | Very dark grey (10YR3/1); medium clay; strong very coarse prismatic, parting to moderate to strong coarse to medium sub-angular blocky structure; very firm to strong consistence dry; soft and semi-hard very coarse (50 mm in size) calcareous segregations common (20%); pH 9.1; abrupt and tongued change to: | |
B24k | 95-130 cm | Light brown (7.5YR6/4); medium heavy clay; moderate to strong coarse to medium blocky structure; very firm to strong consistence dry; many (40%) soft and semi-hard calcareous segregations; pH 9.2. |
- | pH | Salinity | ||
Surface (A1 horizon) | Moderately Alkaline | Very low | Non-Sodic | None 1 |
Subsoil (B21 horizon) | Strongly Alkaline | Low | Non-Sodic | None 2 |
Deeper Subsoil (at 90-130 cm) | Very Strongly Alkaline | High | Strongly sodic | None |
The surface is moderately alkaline. The upper subsoil is strongly alkaline, becoming very strongly alkaline with depth. | The salinity rating in the surface is very low. The subsoil has a low salinity rating, becoming high with depth. | The surface is non-sodic. The upper subsoil is non-sodic, becoming strongly sodic with depth. |
| Boron levels are relatively low in the upper soil profile but become high below 50 cm depth. |
Horizon | Horizon Depth (cm) | pH water | pH CaCl2 | EC dS/m | Sodium Chloride l% | Organic Carbon % | Total Nitrogen % | Exchangeable Cations | Boron mg/kg | Field Capacity pF2.5 | Wilting Point pF4.2 | 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 | 7.7 | 0.17 | - | 1.2 | 0.11 | 31 | 4.9 | 3.1 | 0.42 | 1.7 | 42.9 | 19.7 | 9 | 20 | 17 | 46 |
B21 | 10-35 | 8.5 | 7.8 | 0.22 | - | 0.84 | 0.07 | 30 | 7.6 | 1.8 | 1.6 | 1.8 | 49.8 | 25.9 | 8 | 15 | 17 | 51 |
B22 | 35-65 | 9.0 | 8.2 | 0.43 | 0.29 | 0.68 | 23 | 14 | 2.3 | 7.3 | 3 | 54.7 | 27.8 | 8 | 13 | 14 | 56 | |
B23k | 65-95 | 9.1 | 8.5 | 0.80 | 0.109 | 12 | 17 | 2.4 | 10 | 16 | 50.3 | 26.6 | 9 | 24 | 23 | 36 | ||
B24k | 95-130 | 9.2 | 8.6 | 1.1 | 0.149 | 8.3 | 17 | 2.6 | 13 | 21 | 53.3 | 26.3 | 8 | 14 | 10 | 53 |