NA174

Upper slope on northern spur of rise
		Location	Gymbowen, western Victoria
		Landform	Gently Undulating Plain
		Geology	Pliocene Parilla Sand: marine sand and silt
		Element	Hillcrest


		Description
Horizon	Depth (cm)
A1	0–10	Dark yellowish brown (10YR3/4); sandy loam; weakly structured; weak consistence, dry; pH 6.0; sharp boundary to:
A2	10–30	Yellowish red (5YR4/4); sporadically bleached (5YR7/3d); sandy loam; weak consistence, dry; pH 6.3; sharp boundary to:
B2	30–80+	Yellowish red (5YR5/8); medium clay; very strong consistence, slightly moist; pH 7.4.
Management considerations
Strong texture contrast between surface (A) and subsoil (B21) horizon. Hard setting nature of surface soil. Structure and texture difference would indicate high susceptibility to compaction. Slightly alkaline profile with high magnesium, sodium and slight salinity at depth. Nutrient levels of subsurface (A2) soil are low compared with soil above and below. Upper slope, good site drainage but poor internal drainage.

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exchangeable Cations cmol-/kg				Field Capacity (pF2.5)	Wilting Point (pF4.2)
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Ca	Mg	K	Na	Field Capacity (pF2.5)	Wilting Point (pF4.2)
A1	0–10	6.0	5.0	0.10	3.9	1.1	0.5	0.1	11.2	6.5
A2	10–30	6.3	5.2	0.02	2.5	0.7	0.2	0.0	8.6	4.1
B21	30–80+	7.4	6.2	0.13	4.9	5.5	0.3	2.7	26.2	18.7

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