IS34

Location: Longerenong


Australian Soil Classification: Calcic, Mesonatric, Red SODOSOL

Northcote Factual Key: Dr2.33
Great Soil Group: red brown earth
Soil Type: Drung Sandy Clay Loam

General Landscape Description: Anastomotic plain.
Geology: Quaternary Coonambidgal Formation: fluvial to lacustrine clays and sands.

Soil Profile Morphology:

Surface Soil

A1	0-5 cm	Dark reddish brown (5YR3/4); fine sandy clay loam; hardsetting surface condition; strong very coarse platy structure; strong consistence dry; pH 7.2; sharp boundary to:
Subsoil
B21	5-30 cm	Dark reddish brown (5YR3/4); sporadically bleached (7.5YR7/3d); medium clay; moderate coarse blocky structure; strong consistence dry; pH 8.4; clear boundary to:
B221	30-60 cm	Yellowish red (5YR4/6); light clay; subplastic; weak coarse blocky structure; very firm consistence dry; field pH 9.0; clear boundary to:
B222	60-90 cm	Light brown (7.5YR6/4) with faint pale brown (10YR6/3) mottles; light clay; subplastic; weak coarse blocky structure; very few (<2%) medium (2-6 mm) hard carbonate segregations; pH 9.0; gradual boundary to:
B223	90-120 cm	Light brown (7.5YR6/4) with faint pale brown (10YR6/3) mottles; light clay; subplastic; weak coarse blocky structure; very few (<2%) medium (2-6 mm) hard carbonate segregations; pH 9.0; diffuse boundary to:
B224	120-150 cm	Brown (10YR5/3) with faint reddish brown (5YR5/4) mottles; medium clay; weak very coarse blocky structure; strong consistence dry; very few (<2%) medium (2-6 mm) hard carbonate segregations; pH 9.0; clear boundary to:
B231k	150-185 cm	Yellowish brown (10YR5/4) with faint reddish brown (5YR4/4) mottles; light medium clay; subplastic; weak coarse blocky structure; strong consistence dry; many (20-50%) coarse (6-20 mm) soft carbonate segregations; pH 9.0; gradual boundary to:
B232k	185-200 cm	Brown (10YR5/3) with faint reddish brown (5YR5/4) mottles; medium clay; weak coarse blocky structure; strong consistence dry; many (20-50%) coarse (6-20 mm) soft carbonate segregations; pH 9.0; gradual boundary to:
B233k	200-215 cm	Brown (7.5YR5/4) with faint reddish brown (5YR4/4) mottles; medium clay; weak very coarse blocky structure; strong consistence dry; many (20­50%) coarse (6­20 mm) soft carbonate segregations; pH 9.0.

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	Total Nitrogen %	Organic Carbon %	Exchangeable Acidity cmol-/kg	Field Capacity -30okPa	Permanent Wilting Point -1500okPa	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–5	7.2	0.12	0.03	3.9	4.5	1	1.1	0.09	1.0	4.5	20.7	10.3	23	38	12	26
B21	5–30	8.4	0.5	0.15	8.9	13.8	2	7.3	0.09	0.8		47.8	29.5	7	19	7	65
B221	30–60
B222	60–90
B223	90–120
B224	120–150
B231k	150–185
B232k	185–200
B233k	200–215

• Strong texture contrast profile, possible uniform clay soil in places.
• Neutral surface soil over alkaline subsoil, slightly decreasing at depth, high level of nutrients in upper subsoil (B22 horizon).
• Thin surface soil with, poor structure and fine sand component; susceptible to compaction.
• Upper subsoil is red, whole coloured suggesting oxidation and little water and air movement restriction.
• Subsoil is sodic, becoming strongly sodic with depth and moderate to high salinity values in subsoil.
• Subsoil is paler coloured and mottled below upper subsoil indicating some restricted drainage.
• Landform element, plain; slow site drainage, unless near drainage line.