GHF13a

Location: Heywood

Australian Soil Classification: Mottled, Mesotrophic, Brown FERROSOL
General Landscape Description: Undulating rises to low hills
Site Description: Lower Slope
Land Unit: Drumborg Basalt Hills
Geology: Quaternary basalt

General Land Unit Description:
This land unit consists of the undulating rises of Sugarloaf Hill and Sheaok Rise, north of Heywood. The soils consist of Red Dermosols and occasionally Kurosols on the crests and slopes of the rises. On the lower slopes and plains in between the rises, Ferric Brown Chromosols or Dermosols predominate. There are minor occurrences of Black Vertosols in local depressions. Here a two year old Eucalyptus globulus plantation exists on ex-agricultural land





Soil Profile Morphology

Surface

A1	0-20 cm	Dark brown (7.5YR3/3) clay loam, strong granular structure (5-10 mm), very weak consistence when moderately moist, common very fine macropores, areal porosity 0.5%, common medium roots. Clear and smooth transition to:
Subsoil
B1	20-40 cm	Reddish brown (5YR4/4) light clay, moderate granular structure (10-20 mm) parting to moderate granular structure (<2 mm), weak consistence when moderately moist, few medium ferruginous nodules, common fine macropores, areal porosity 0.5%, few fine roots. Gradual and smooth transition to:
B21	40-70 cm	Strong brown (7.5YR5/6) with common coarse distinct yellowish red (5YR4/6) mottles, light clay, moderate polyhedral structure (20-50 mm) parting to moderate granular structure (5-10 mm), firm consistence when moderately moist, common very fine macropores, areal porosity 0.4%, few fine roots. Diffuse and smooth transition to:
B22	70-150 cm	Yellowish brown (10YR5/8) with many coarse distinct red (2.5YR4/6) mottles, light clay, moderate polyhedral structure (20-50 mm) parting to moderate granular structure (2-5 mm), firm consistence when moderately moist, few fine macropores, areal porosity 1.0%, few very fine roots.
	150-410 cm	Highly weathered vesicular basalt, root channels observed, odd root found at 350 cm, soils moderately moist, no impeding layer to roots, some rock starting at 410 cm.

Horizon	Horizon Depth (cm)	pH (water)	pH (CaCl2)	EC dS/m	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
A1	0-20	5.5	4.7	0.07	39		4.9	2.7	0.65	0.25	15	27	19	33	21.9	19.3
B21	20-40	6.1	5.4	0.06	<10	13	3.9	4.4	0.33	0.48	8	19	13	58	40.1	24.4
B22	40-70	6.3	6.0	0.10	<10	9.9	2.8	5.0	0.20	0.77	5	14	11	69	42.2	32.0
B23	70-110	6.2	6.0	0.13	<10	8.8	2.2	4.2	0.21	0.82	7	17	13	63	42.6	32.6
B24	110-150	6.0	5.8	0.13