GN30

Location: Mooroopna North
Australian Soil Classification: Episodic, Epipedal, Brown VERTOSOL	Northcote Factual Key: Ug
Great Soil Group: red-brown earth

GN30 Landscape

A1	0-30 cm	Brown (10YR4/3) medium clay; strong coarse blocky, breaking down to moderate medium blocky structure; firm consistence moist; pH 8.6;clear and wavy change to:	GN30 Profile
Subsoil
B21	30-50 cm	Yellowish brown (10YR5/6) [with patches of strong brown (7.5YR5/6) and red (2.5YR4/8) mottles] medium clay; very firm consistence moist; contains a slight (2-5 %) amount of manganese nodules (2 mm size) and a trace (2 %) amount of soft carbonate; slickensides present; gradual change to:
B22	50-70 cm	Yellowish brown (10YR5/6) medium clay; firm consistence moist; clear change to:
B3	70-110 cm	Dark yellowish brown (10YR4/4) medium clay.

	pH	Salinity Rating	Sodicity	Dispersion
Surface soil (A1 horizon)	Strongly Alkaline		Sodic
Upper subsoil (B21 horizon)	Strongly Alkaline		Sodic
Deep subsoil (at 1 m)	Moderately Acid		Non-Sodic

Management Considerations:

Surface (A) Horizon

• Moderate to strong dispersion without remoulding

• Strong dispersion without remoulding.