IS29

Location: Haven

Soil Type: Minor Soil D

Australian Soil Classification: Vertic, Hypocalcic, Grey DERMOSOL

Northcote Factual Key: Gn3.93
Great Soil Group: no suitable group

General Landscape Description: Drainage depression within a Dunefield.
Geology: Quaternary Shepparton Formation: fluvial silt, sand and minor gravel.

Soil Profile Morphology:

Surface Soil

A1	0-15 cm	Dark yellowish brown (10YR4/2); sandy clay loam; hardsetting surface condition; massive structure; strong consistence dry; pH 7.4; sporadically bleached (2.5Y8/0d) at the interface with a sharp change to:
Subsoil
B21	15-40 cm	Light grey (2.5Y7/2) with yellowish brown (10YR5/6) mottles; sandy clay; plastic; large slickensides present; very strong consistence dry, non sticky consistence wet; pH 7.0; gradual change to:
B22	40-85 cm	Pale brown (10YR6/3) with pale yellow (2.5Y7/4) mottles; sandy clay; plastic; large slickensides present; very strong consistence dry, slightly sticky consistence wet; contains a trace (<2%) amount of soft carbonate; pH 8.9; gradual change to:
2A1	85-120 cm	Pale brown (10YR6/3) with pale yellow (2.5Y7/4) mottles; loamy sand; pH 9.0.

Chemical and Physical Analysis:

Horizon	Sample Depth cm	pH H₂O	EC dS/m	Sodium Chloride %	Exchangeable Calcium cmol-/kg	Exchangeable Magnesium cmol-/kg	Exchangeable Potassium cmol-/kg	Exchangeable Sodium cmol-/kg	Exchangeable Acidity cmol-/kg	Total Nitrogen %	Organic Carbon %	Permanent Wilting Point -1500^okPa	Coarse Sand %	Fine Sand %	Silt %	Clay %
Horizon	Sample Depth cm	pH H₂O	EC dS/m	Sodium Chloride %	Exchangeable Calcium cmol-/kg	Exchangeable Magnesium cmol-/kg	Exchangeable Potassium cmol-/kg	Exchangeable Sodium cmol-/kg	Exchangeable Acidity cmol-/kg	Total Nitrogen %	Organic Carbon %	Permanent Wilting Point -1500^okPa	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–15	7.4	0.09	0.02	2.2	2.1	0.7	0.1	3.2	0.05	0.88	3.8	43	38	5	13
B21	15–40	7.0	0.2	0.03	2.9	4.1	0.9	0.6	4.2	0.02	0.27	8.1	39	33	5	22
B22	40–85	8.9	0.31	0.03	3.4	4.2	1.1	0.4		0.01	0.17	11.9	48	27	3	20
2A1	85–120	9.0	0.24	0.03	2.2	2.6	0.7	0.1		0.01	0.17	7.3	56	26	5	13

Note: NA=not assessed.

Management Considerations:

Gradational soil with sandy component, fine sand decreases with depth and coarse sand increases with depth.
Neutral to alkaline soil with relatively low nutrient availability, but high capacity in proportion to clay percentage.
Weak structure of surface soil, susceptible to sheet erosion.
Pale colour of subsoil, indicating restrictive internal drainage.
Depositional profile, possible perched watertable with polygenetic soil.
Landform element, drainage depression; very slow site drainage.

Profile Described By: John Martin, Nabil Badawy, Ron Cawood, Geoff Pope, John Galea, John Turner (1970).

Reference: "Major Agricultural Soils of the Wimmera Irrigation Area". John Martin, Mark Imhof, Lourey Ruth, Rob Nink, Karen DePlater, Paul Rampant, Sonia Thompson, S. Alexander. Department of Natural Resources and Environment, Victoria. 1996.

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