WWPS1
Location: Longeranong
Australian Soil Classification: Episodic-Endocalcareous, Epipedal, Grey VERTOSOL
Northcote Factual Key: Ug 5.25
Soil Type: Murtoa Clay
Soil Map Unit: Mc Murtoa Clay
General Landscape Description: Prior stream in a flood plain. Floods infrequently.
Site Description: Cropping paddock with occasional grazing. Poorly drained.
Native Vegetation: Savannah Woodland (yellow gum) with areas of grassland.
Geology: Late Pleistocene to Holocene. Fluvial sediments e.g. from ancestral or current Wimmera River flood plains.
| WWPS1 Landscape |
Soil Profile Morphology:
Surface Soil
| Ap | 0-10 cm | Greyish brown (10YR5/2); loose surface condition with surface cracks; medium clay; moderate to strong very coarse angular blocky, parting to moderate to strong coarse sub-angular blocky structure; strong consistence dry; pH 6.2; clear change to: |  WWPS1 Profile |
| Subsoil |  | ||
| B21 | 10-25 cm | Dark greyish brown (10YR4/2); medium heavy clay; strong coarse sub-angular blocky, parting to moderate medium sub-angular blocky structure; strong consistence dry; pH 6.8; changes to: | |
| B22 | 25-60 cm | Dark greyish brown (2.5Y4/2); medium heavy clay; moderate coarse prismatic, parting to strong coarse to medium angular blocky structure; very firm consistence slightly moist; pH 7.3; gradual change to: | |
| B23 | 60-100 cm | Dark greyish brown (2.5Y4/2); medium clay; moderate coarse prismatic, parting to strong to moderate coarse angular blocky, parting to strong to moderate medium angular blocky structure; firm consistence slightly moist; slightly calcareous; pH 7.4; gradual change to: | |
| B24 | 100-120 cm | Olive brown (2.5Y4/3) with a few (5%) faint brown (7.5YR5/4) mottles; light medium clay; fine lenticular structure; firm consistence moist; slightly calcareous; pH 7.5. | |
Soil Profile Characteristics:
| - | pH | Salinity | ||
Surface (Ap horizon) | Slightly Acid | Low to Medium | Sodic | Nil1 |
Subsoil (B21 horizon) | Slightly Acid | Low | Sodic | Nil2 |
Deeper Subsoil (at 60-100 cm) | Slightly Alkaline | High | Strongly Sodic | Nil |
| The surface and the upper subsoil are slightly acid. The deeper subsoil is slightly alkaline. | | The salinity rating in the surface is low to medium. The upper subsoil has a low salinity rating, becoming high with depth. | | The surface and upper subsoil are sodic, becoming strongly sodic with depth. | |
| | Boron content tends to increase with depth. |
Chemical and Physical Analysis:
Horizon | Horizon Depth (cm) | pH water | pH CaCl2 | EC dS/m | 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 | |||||||||||||||||
Ap | 0-10 | 6.2 | 5.6 | 0.22 | 1.7 | 0.15 | 8.5 | 5.2 | 1.4 | 1.3 | 1.8 | 31.9 | 15.2 | 5 | 33 | 22 | 36 |
B21 | 10-25 | 6.8 | 6.0 | 0.23 | | | 9.4 | 10 | 0.6 | 2.8 | <0.3 | 34.8 | 18.2 | 1 | 25 | 20 | 52 |
B22 | 25-60 | 7.3 | 6.6 | 0.59 | | | 7.7 | 14 | 0.6 | 5.3 | 4.6 | 41.9 | 21.4 | <1 | 19 | 19 | 60 |
B23 | 60-100 | 7.4 | 7.1 | 2.0 | | | 6.9 | 15 | 0.8 | 7.9 | 6.8 | 43.5 | 23.3 | <1 | 20 | 21 | 57 |
B24 | 100-120 | 7.5 | 7.1 | 1.7 | | | 6.7 | 16 | 0.8 | 11 | 1.5 | | | | | | |
Profile Described By: Mark Imhof & John Martin (October 2006).
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