Victorian Resources Online (archived)

EGW84

Location: Gelantipy

Australian Soil Classification: Ferric, Eutrophic, Grey CHROMOSOL (thick surface)

Map Unit: Gelantipy (Component 2)
Previous Site Name: EG84

General Landscape Description: Plateau
Site Description: Upper slope, ENE aspect, 11 % slope
Land Use: Unused
Native Vegetation: Montane grassy woodland
Geology: Tertiary basalt

Soil Profile Morphology:

Surface soil
A1	0 – 5 cm	Dark greyish brown (10YR4/2); silty loam; weak crumb structure; firm consistence dry; few medium ferruginous concretions; gradual change to:
A21	5 – 50 cm	Greyish brown (10YR5/2); silty loam; massive; very firm consistence dry; few medium ferruginous concretions; pH 6.1; clear wavy change to:
A22	50 – 60 cm	Greyish brown (10YR5/2); silty loam; massive; strong consistence dry; many medium ferruginous concretions; clear wavy change to:
Subsoil
B2	60 – 100+ cm	Grey (10YR5/1) finely mottled with brownish yellow (10YR6/6); heavy clay; strong coarse prismatic structure, very strong consistence dry; very many (>50%) medium to coarse ferruginous concretions and many rounded basalt stones; pH 6.7.

Key Profile Features:

Strong texture contrast between surface (A) horizon and subsurface (B2) horizon.

Soil Profile Characteristics:

-	pH	Salinity	Sodicity	Dispersion
Surface soil (A1 horizon)	Slightly acidic	Very low	Non sodic	None¹
Subsoil (B2 horizon)	Slightly acidic	Very low	Non sodic	None²

¹ Moderate after remoulding,² Complete after remoulding

Chemical and Physical Analysis:

Horizon	Horizon Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Organic Carbon %	Total Nitrogen %	Free Fe₂O₃ % w/w	Exchangeable Aluminium ppm	Exchangeable Acididty meq/100g	Exchangeable Cations				Coarse Sand (0.2-2.0 mm) %	Fine Sand (0.02-0.2 mm) %	Silt (0.002-0.02 mm) %	Clay (<0.002 mm) %	Field Capacity % w/w	Wilting Point % w/w
										Ca	Mg	K	Na
										meq/100g
A2	5-50	6.1	5.3	<0.05	0.76	<0.05	2.2	<1	6.4	2.8	1.3	0.07	0.11	9	41	30	16	27.9	6.4
B2	60-100	6.7	6.2	<0.05			4.1		7.6	8.1	12	0.14	0.74	8	24	22	46	42.4	22.4

Management Considerations

Whole profile

The profile is slightly acid throughout
Plant roots would find it difficult to penetrate the massive subsurface (A21 and A22) horizons which would be hard setting when dry
Plant available water capacity is considered to be low; estimated at 57 mm.

Surface (A) horizons

The nutrient holding capacity of the soil is low (based on the sum of the exchangeable basic cations and the depth of roots observed)
Potassium levels are very low and a response to potassium would be expected.

Profile Described By: David Rees and Grant Boyle, 2000.

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