H77

Location: Bostocks Creek

Australian Soil Classification: Vertic Black DERMOSOL

General Landscape Description: Plain
Site Description: Lower slope (1%) of adjoining rise
Vegetation: Pasture
Geology: Quaternary Basalt and Colluvium and Alluvium

H77 Landscape

Soil Profile Morphology:

Surface Soil

A1	0-10 cm	Very dark grey (7.5YR3/1); common medium faint yellowish brown (10YR5/6) mottles; heavy clay loam; strong medium parting to strong fine subangular blocky structure; rough ped fabric; firm consistence, dry; pH 4.8; gradual change to:	H77 Profile
A3	10-30 cm	Very dark grey (7.5YR3/1) with common medium distinct yellowish brown (10YR5/6) mottles; light clay; strong medium polyhedral parting to strong fine subangular blocky structure; rough ped fabric; weak consistence, slightly moist; pH 5.5; clear change to:
Subsoil
B21	30-45 cm	Very dark grey (10Y3/1); medium clay; strong medium polyhedral parting to strong fine subangular blocky structure; rough ped fabric; firm consistence, moist; very few medium gravelly subangular basalt; pH 7.8; diffuse change to:
B22	45-75 cm	Very dark grey (10Y3/1); heavy clay; strong medium prismatic parting to strong fine subangular blocky structure; rough to smooth ped fabric; firm consistence, moist; pH 6.0; diffuse change to:
B23	75-105 cm	Very dark grey (10Y3/1); common medium distinct dark brown; heavy clay; strong medium prismatic parting to strong fine subangular blocky structure; smooth ped fabric; firm consistence, moist; a few slickenslides; pH 5.5.

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	5.3	4.9	0.19	8.5	3.4	0.74	0.56	-	-	6.7	0.49	12	<10	310	21	25	290

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	1.18	56.1	55.2	48.2	18.8	NIl	NIl	Nil	Slight	Water Stable

Profile Described By: David Rees, October 2006.

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