Profile Number 33

Laboratory number:	0971	Profile Description
Site number:	489	A₁	0 - 10 cm	Very dark greyish brown (10YR 3/2) clay loam; moderate subangular blocky structure (7 mm); rough-ped fabric; very hard when dry; common roots; pH 5.7; abrupt smooth boundary
Classification:	Northcote (1979) - Gn3.15 Stace et al. (1972) - Terra Rossa	A₂	10 - 15 cm	Dark brown (7.5YR 3/2) light clay; moderate angular blocky structure (10 mm); rough-ped fabric; very hard when dry; common roots; pH 5.5; clear boundary
Location:	Omeo 8423, grid ref. 742911 2 km SE of Bindi	B₂₁	15 - 90 cm	Dark reddish brown (5YR 3/4) medium clay; strong subangular blocky structure (6 mm); smooth-ped fabric; firm when moist; common roots to 60 cm, few to 90 cm; pH 7.0; diffuse boundary
Land system, component:	Bindi, 3	B₂₂	90 - 180 cm	Yellowish red (5YR 4/6) medium clay; structure and consistence not recorded but probably similar to B₂₁;2% calcareous nodules (2 mm); pH 7.0
Topography:	Mid-slope of alluvial fan, 10% gradient
Elevation:	480 m
Drainage:	Good
Parent material:	Fine-textured alluvium and colluvium from limestone hills
Vegetation:	Cleared; mostly introduced grasses
Remarks:	Sampling site is within an old disused sheepyard

LABORATORY ANALYSES 971
Horizon	Sample Depth cm	Lab. texture	Particle size distribution					Atterberg limits				1:5 soil water suspension			Clay mineralogy by x-ray diffraction
Horizon	Sample Depth cm	Lab. texture	Gravel %	Coarse sand % f.e.	fine sand % f.e.	Silt % f.e.	Clay % f.e.	liquid limit %	plastic limit %	plasticity index %	linear shrinkage %	pH	EC 25°C uS/cm	Cl- %	Depth cm	Composition %
Al	0 - 5	SiCL	15	1	24	33	34						150	0.006	60 - 90	mica 80; kaolinite 20
Al	5 - 10		20					53	26	27	12	6.0	47	0.003
A2	10 - 15	SiC	5	2	28	27	40						30	0.002
B21	20 - 30	C	7	2	28	24	44	45	19	26	12	6.8	26	0.002
B22	90 - 120	C	4	3	21	14	59						22	0.002
B22	150 - 180	C	6	3	17	16	59						23	0.001

Horizon	Sample Depth cm	Org. C %	Total N %	1.3C N	Free Fe₂O₃ %	Available		HCl extract		Exchangeable cations
						P ppm	K ppm	P %	K %	Ca	Mg	K	Na	CEC	Ca % of CEC	Mg	K	Na	H
						P ppm	K ppm	P %	K %	Milliequivalents/100g				CEC	Ca % of CEC	Mg	K	Na	H
Al	0 - 5	4.2	0.40	14	2.7	33	760	0.041	0.72	11.8	1.3	2.1	0.05	27.0	44	5	8	<1	43
Al	5-10
A2	10 - 15	1.8	0.19	12	3.0	9	360	0.032	0.62	9.8	0.7	1.0	0.05	20.4	48	3	5	<1	44
B21	20 - 30	0.69	0.097	9	3.6	5	240	0.027	0.72	10.7	0.7	0.7	0.05	17.8	60	4	4	<1	32
B22	90 - 120				4.4			0.027	0.96	13.9	2.3	1.0	0.2	27.3	51	8	4	1	36
B22	150 - 180				4.0			0.019	0.98	16.9	2.8	1.0	0.3	28.8	59	10	3	1	27

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