Profile Number 24

Laboratory number:	0991	Profile Description
Site number:	661	A₁₁	0 - 7 cm	Very dark greyish brown (10YR 3/2) silty loam; moderate crumb structure; rough-ped fabric; friable when moist; pH 5.9; clear wavy boundary
Classification:	Northcote (1979) - Um6.21 Stace et al. (1972) - Alluvial Soil	A_l2	7 - 17 cm	Very dark greyish brown (10YR 3/2) silty loam; abundant distinct brown (<5 mm) mottles; moderate fine (5 mm) subangular blocky structure; rough-ped fabric; friable when moist; pH 5.7; diffuse wavy boundary
Location:	Bairnsdale 8422, grid ref. 724240 2 km S of Bruthen	AC	17 - 27 cm	Very dark greyish brown (10YR 3/2) silty loam (with thin fine sand lenses); abundant distinct brown (<5 mm) mottles; moderate fine (5 mm) subangular blocky structure; rough-ped fabric; friable when moist, (fine sand is loose when moist); pH 5.9; abrupt smooth boundary
Land system, component:	Maffra 1, 3	IIA₁	27 - 52 cm	Very dark greyish brown (10YR 3/2) silty clay loam; abundant distinct brown (5 - 15 mm) mottles; moderate coarse (20 mm) angular blocky structure; rough-ped fabric; firm when moist; pH 5.9; abrupt boundary
Topography:	Tambo River flood plain, hummocky, 1% slope	IIC	52 - 90+ cm	Yellowish brown (10YR 5/6) silty loam; abundant distinct grey (5 -15 mm) mottles; apedal; earthy fabric; friable when moist; pH 5.9
Elevation:	15 m
Drainage:	Poor
Parent material:	Holocene medium-textured alluvium
Vegetation:	Cleared; grassland mostly with introduced species
	An older, buried profile occurs below 27 cm depth

LABORATORY ANALYSES 991
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 %
All Al2 IIA1 IIC	0 - 7 10 - 17 30 - 52 52 - 60	L L SiL SiL	0 0 0 0	2 1 <1 <1	43 54 37 55	18 18 34 26	17 15 19 15					6.2 6.3 6.1 6.3	210 140 310 230	0.007 0.008 0.028 0.019

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
All	0 - 7	4.0	0.43	12	1.6	52	180	0.037	0.26	8.7	6.0	0.4	0.5	26.9	32	22	1	2	43
Al2	10 - 17	2.3	0.20	15	1.8	25	70			8.0	4.3	0.1	0.5	20.9	38	21	<1	2	30
IIA1	30 - 52	1.4	0.15	12		12	40	0.028	0.28	8.2	5.1	0.09	1.0	24.5	33	21	<1	4	42
IIC	52 - 60	1.5	0.11	18						7.0	4.1	0.04	0.8	21.2	33	19	<1	4	44

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