H72

Location: Bostocks Creek

Australian Soil Classification: Black CHROMOSOL or Black DERMOSOL

General Landscape Description: Plain
Site Description: Midslope of gentle slope (3-5%)
Vegetation: Pasture
Geology: Quaternary Basalt

H72 Landscape

Soil Profile Morphology:

Surface Soil

A11	0-10 cm	Very dark grey (7.5YR3/1); light clay loam, fine sandy; strong medium parting to medium fine subangular blocky structure; rough ped fabric; firm consistence, slightly moist; pH 5.2; clear change to:	H72 Profile
A12	10-25 cm	Dark brown (7.5YR3/2); light clay loam, fine sandy; strong medium parting to fine subangular blocky structure; rough ped fabric; firm consistence, slightly moist; many medium ferruginous concretions; pH 5.0; clear change to:
A3	25-40 cm	Dark greyish brown (10YR4/2); light clay; strong medium parting to fine subangular blocky structure; rough ped fabric; firm consistence, slightly moist; many medium ferruginous concretions; pH 4.5; clear change to:
Subsoil
B21	40-60 cm	Very dark greyish brown (10YR3/2); few coarse faint dark greyish brown (10YR4/2, 10YR4/3) mottles; medium heavy clay; strong medium polyhedral parting to fine subangular blocky structure; rough ped fabric; very firm consistence, moist; few medium ferruginous concretions; pH 5.7; gradual change to:
B22	60-80 cm	Dark greyish brown (2.5Y4/2); many medium distinct strong brown (7.5YR4/6) mottles; medium clay; moderate medium parting to prismatic structure; smooth ped fabric; very firm consistence, moist; few medium ferruginous concretions; few faint slickensides; pH 7.0; gradual change to:
B3/C	90+ cm	Dark greyish brown (2.5Y4/2); many medium faint light yellowish brown (2.5Y6/3) mottles; light clay, coarse sandy; moderate medium parting to prismatic structure; smooth ped fabric; strong consistence, slightly moist; very few faint slickensides; many coarse gravelly basalt; carbonate; pH 7.0.

Chemical Properties of Upper 10 cm:

Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exchangeable Cations				Acidity meq/100g	Cation Exchange Capacity	Total Carbon %	Total Nitrogen %	Organic Matter %	Available Aluminium mg/kg	Available Potassium (Skene K) mg/kg	Phosphorous (Olsen P) mg/kg	Available Sulphur mg/kg	Phosphorous Buffering Index
				Ca	Mg	K	Na
				meq/100g
0-10	5.4	4.9	0.18	9.4	3.4	1.4	0.34	-	-	5.7	0.46	11	<10	560	88	33	210

Physical Properties of Upper 10 cm:

Depth (cm)	Bulk Density kg/L	Volumetric Water				Dispersion				Slaking
		At Saturation pF0 mL/100mL	Near Saturation pF1.0 mL/100mL	Field Capacity pF2.0 mL/100mL	Wilting Point pF4.2 mL/100mL	Dry		Remoulded
						2 Hour	20 Hour	2 Hour	20 Hour
0-10	1.15	56.6	54.3	49.9	18.2	Nil	Nil	Nil	Nil	Partial

Profile Described By: David Rees, October 2006.

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