H75

Location: Bostocks Creek

Australian Soil Classification: Vertic Grey CHROMOSOL / SODOSOL

General Landscape Description: Plain
Site Description: Very gentle slope (1%)
Vegetation: Pasture
Geology: Quaternary Basalt and Colluvium

H75 Landscape

Soil Profile Morphology:

Surface Soil

A1	0-15 cm	Very dark grey (2.5Y3/1); silty loam; moderate medium subangular blocky structure; rough ped fabric; weak consistence, dry; pH 4.5; clear change to:	H75 Profile
A21	15-35 cm	Dark brown (10YR4/3); many coarse distinct light grey (10YR7/2) mottles; light grey (10YR7/2) sporadic bleach; silty loam; weak medium subangular blocky structure; rough ped fabric; weak consistence, dry; very few fine gravelly ferruginous concretions; pH 4.5; clear change to:
A22	35-45 cm	Dark greyish brown (10YR4/2); light grey (10YR7/2) conspicuous bleach; heavy loam fine sandy; apedal (massive) structure; earthy fabric; weak consistence, dry; many fine gravelly ferruginous concretions; pH 5.0; clear change to:
Subsoil
B21	45-60 cm	Dark greyish brown (10YR4/2); common medium distinct yellowish brown (10YR5/6) mottles; medium heavy clay; strong medium polyhedral parting to fine subangular blocky structure; rough to smooth ped fabric; strong consistence, slightly moist; few medium gravelly subrounded basalt; few faint slickenslides; few fine gravelly ferruginous concretions; pH 5.0; gradual change to:
B22	60-85 cm	Light yellowish brown (2.5Y6/3); common medium prominent yellowish brown (10YR5/6) and dark grey (10YR4/2) mottles; medium heavy clay; moderate to strong medium polyhedral parting to fine subangular blocky structure; rough to smooth ped fabric; strong consistence, slightly moist; common medium gravelly subrounded basalt; few faint slickenslides; pH 6.5; gradual change to
C/R	85-95 cm	Very dark grey (2.5Y3/1); heavy clay, sandy; undetermined structure; abundant coarse cobbly basalt; pH 7.0

Chemical Properties of Upper 10 cm:

Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exchangeable Cations				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	5.2	4.7	0.15	4.8	1.2	0.51	0.39	4.0	0.29	7.4	17	210	43	21	140

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	52.6	48.9	43.8	11.0	Nil	NIl	NIl	Nil	Partial

Profile Described By: David Rees, October 2006.

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