ASSS8

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Location: Clyde

Australian Soil Classification: Bleached-Mottled, Mesotrophic, Brown KUROSOL (very thick sandy A horizons)
General Landscape Description: Dunefield, rises.
Site Description: Dune crest (Slope: 4%, Aspect: 330).
Land Use: Horticulture – vegetables.
Geology: Aeolian sediments on Neogene (Tertiary) ferruginised sandstone sediments.

Image: ASSS8 landscape photo
ASSS8 Landscape

Soil Profile Morphology:

Surface Soil

Ap	0 – 17 cm	Black (10YR2/1); loamy sand; moderate medium platy structure; rough ped fabric; firm consistence, moderately moist; pH 6.4; abrupt and smooth change to:	ASSS8 Profile
A1	17 – 35 cm	Dark brown (10YR3/3); sand; massive; sandy fabric; very weak consistence, moderately moist; pH 6.8; abrupt and wavy change to:
A21	35 - 45 cm	Brown (7.5YR5/4), conspicuously bleached; sand; massive; sandy fabric; very weak consistence, moderately moist; pH 6.8; clear and wavy change to:
A22	45 - 75 cm	Brown (7.5YR4/4); sand; massive; sandy fabric; very weak consistence, moderately moist; pH 6.7; clear change to:
A23	75 - 82 cm	Brown (7.5YR4/4); sand; massive; sandy fabric; very weak consistence, moist; many ferruginous and ferromanganiferous gravelly nodules; pH 6.7; abrupt change to:
Subsoil
B21	82 – 95 cm	Yellowish brown (10YR5/6); many medium distinct brownish yellow (10YR6/6) and yellowish red (5YR5/8) mottles; medium clay, sandy; moderate medium prismatic structure; smooth fabric; very firm consistence, slightly moist; many 50% ferromanganiferous (6-22mm), organo-clay and clay cutans along large planes; pH 5.3; gradual change to:
B22	95 - 140 cm	Dark red (10R3/8); many very coarse prominent yellowish brown (10YR5/6) and reddish yellow (7.5YR6/6) mottles; light medium clay, sandy; weak very coarse prismatic structure; earthy fabric; firm consistence, slightly moist; common organo-clay and clay cutans; pH 4.6; gradual change to:
BC	140 – 155 cm	Reddish yellow (7.5YR6/6); many coarse prominent red (2.5YR4/6), and white (7.5YR8/0) mottles; sandy clay; massive; earthy fabric; firm consistence, slightly moist; few distinct clayey cutans; pH 4.7.

Key Profile Features:

Very deep sandy surface horizons.
Strong texture contrast between surface (A) horizons and subsoil (B21) horizon.
Mottled subsoil.

Soil Profile Characteristics:

	pH	Salinity Rating	Dispersion
Surface (Ap horizon)	Slightly Acid	-	-
Subsoil (B21 horizon)	Strongly Acid	Low	Slight
Deeper Subsoil (B22 horizon)	Very Strongly Acid	Low	Slight

Graphs: ASSS8 graphs

The surface is slightly acid. The upper subsoil is strongly acid. The deeper subsoil is very strongly acid.

The salinity rating in the surface is high. The salinity rating of the subsoil is low.

Horizon	Horizon Depth (cm)	pH (water)	pH (CaCl²)	EC dS/m	Total Nitrogen g/100g	Organic Carbon g/100g	Exchangeable Cations
							Ca	Mg	K	Na
							Meq/100g
Ap	0-17	6.4	5.9	0.55	0.09	2.2
A1	17-35	6.8	6.1	0.17	0.06	0.95	3.9	1.1	0.18	0.51
A21	35-45	6.8	6.1	0.13
A22	45-75	6.7	6.0	0.14
A23	75-82	6.7	6.1	0.11
B21	82-95	5.3	4.7	0.24			3.3	1.7	0.33	0.34
B22	95-140	4.6	4.2	0.26
BC	140-155+	4.7	4.3	0.2			0.84	1.3	0.15	0.38

Profile Described By: David Rees, Mark Imhof and Lindsay Hyde (May 2014).

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