H74

Location: Bostocks Creek

Australian Soil Classification: Brown CHROMOSOL / SODOSOL

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

Soil Profile Morphology:

Surface Soil

A11	0-25 cm	Very dark greyish brown (10YR3/2); silty loam; strong medium subangular blocky structure; rough ped fabric; firm consistence, slightly moist; pH 5.5; clear change to:	H74 Profile
A12	25-45 cm	Dark greyish brown (10YR4/2); many coarse distinct light grey (10YR7/2) mottles; light grey (10YR7/2) sporadic bleach; silty loam; weak medium subangular blocky structure; rough ped fabric; firm consistence, slightly moist; few fine gravelly ferruginous concretions; pH 5.8; clear change to:
A2	45-55 cm	Dark greyish brown (10YR4/2); light grey (10YR7/2) conspicuous bleach; heavy loam fine sandy; apedal (massive) structure; earthy fabric; firm consistence, slightly moist; many fine gravelly ferruginous concretions; pH 6.5; clear change to:
Subsoil
B2	55-85 cm	Light olive brown (10YR5/4); many medium distinct brownish yellow (10YR6/8) and dark grey (10YR3/1) 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; pH 5.8; gradual change to:
C	85-100 cm	Very dark greyish brown (2.5Y3/2); common medium distinct brownish yellow (10YR6/8) mottles; light clay, sandy; moderate medium parting structure; smooth ped fabric; strong consistence, slightly moist; abundant coarse cobbly basalt; carbonate; pH 6.8.

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	4.8	0.04	5.9	1.2	0.26	0.34	4.3	0.31	8.0	13	110	32	13	130

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	1.17	52.5	49.6	44.6	11.0	NIl	Nil	Nil	Slight	Water Stable

Profile Described By: David Rees, October 2006.

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