Profile Number 25

Laboratory number:	0988	Profile Description
Site number:	662	A_ll	0 - 20 cm	Very dark brown (10YR 2/2) silty loam; moderate crumb structure; rough-ped fabric; friable when moist; abundant roots; mica; pH 5.5; gradual wavy boundary
Classification:	Northcote (1979) - Um6.21 Stace et al. (1972) - Alluvial Soil	A_l2	20 - 35 cm	Black (10YR 2/1) silty clay loam; moderate crumb structure; rough-ped fabric; friable when moist; common roots; mica; pH 6.0; clear smooth boundary
Location:	Bairnsdale 8422, grid ref. 707103 On bank of Tambo River 1 km from its mouth	C₁	35 - 46 cm	Dark brown (10YR 4/3) silty clay loam; abundant distinct grey (5 - 15 mm) mottles; apedal; earthy fabric; friable when moist; few roots; mica; pH 6.0; clear smooth boundary
Land system, component:	Delta, 1	C₂	46 - 68 cm	Dark brown (10YR 4/3) loamy sand; abundant distinct grey (5 - 15 mm) mottles; apedal; earthy fabric; firm when moist; mica; pH 7.0; clear smooth boundary
Topography:	1% levee slope on river delta	C₃	68 - 90 cm	Dark yellowish brown (10YR 4/6) silty loam clay; abundant prominent grey (5 - 15 mm) mottles; apedal; earthy fabric; very firm when moist; mica; pH 7.0
Elevation:	10 m
Drainage:	Imperfect
Parent material:	Holocene fine-textured alluvium
Vegetation:	Cleared; mostly introduced grasses with occasional Eucalyptus tereticornis

LABORATORY ANALYSES 988
Sample Depth cm	Lab. texture	Particle size distribution					Atterberg limits				1:5 soil water suspension			Clay mineralogy by x-ray diffraction
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 %
0 - 10	L	0	2	34	22	19					5.4	210	0.016
10 - 20	L	0	2	41	24	19					5.6	71	0.004
20 - 30	L	0	2	52	23	16					5.9	51	0.002
30 - 35	L	0	2	51	23	16					6.2	64	0.003
35 - 46	L	0	3	54	23	14					6.5	71	0.003
68 - 90	L	0	2	53	20	18					6.9	390	0.037

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
0 - 10	3.9	0.53	10	1.2	69	320	0.045	0.26	2.7	3.1	0.9	0.7	36.7	7	8	2	2	81
10 - 20	4.0	0.33	16		47	180			1.8	2.1	0.5	0.6	32.7	6	6	2	2	84
20 - 30	2.7	0.20	18						1.6	2.5	0.4	0.7	25.4	6	10	2	3	79
30 - 35	1.6	0.14	15	1.3	16	120	0.025	0.26	2.2	3.5	0.3	0.9	20.5	11	17	1	4	67
35 - 46	1.1	0.077	19	1.8	8	90	0.026	0.26	2.7	4.7	0.2	1.1	16.3	17	29	1	7	46
68 - 90					16	240	0.026	0.32	2.4	5.4	0.5	3.6	16.0	15	34	3	23	25

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