15 Yellow and brown strongly acidic mottled texture contrast soils on Neogene sediments

These soils are found on the gently undulating plains, rises or low level plateaux in higher rainfall areas underlain by Neogene sediments (generally sands) which are generally unconsolidated but often have an indurated pan or layer on which the soils have developed. These strongly acidic mottled yellow and brown texture contrast soils are not as prevalent as the other texture contrast soils, however, despite the acidity some of these soils are sodic at depth. Characteristics are similar to other soils on Neogene sediments with pale mottled but strongly structured subsoils and buckshot in the often bleached subsurface horizon sitting on the subsoil. There may be more organic matter and deeper in the surface horizon in the wetter areas.

Notable characteristics are texture contrast and strongly acidic mottled subsoil, limiting nutrient availability.

Soil Sites

Site Code	Soil-landform unit	Component	ASC	FK	1:100 000 mapsheet
MM5109	89	Upper slope	Melacic-Mottled, Natric, Yellow Kurosol	Dy5.41	T7721 - Geelong
MM5308	20	Mid slope	Bleached-Mottled, ?, Brown Kurosol	Dy3.42	T7722 - Bacchus Marsh
OTR499	89	Mid slope	Bleached-sodic, Eutrophoic, Black Kurosol	Db4.31	T7721 - Geelong
SW63	159	Flat	Humose, Dystrophic, Brown Kurosol (thick sandy surface)	Gn2.81	T7520 - Princetown
SW64	181	Mid slope	Humose-acidic, Kandosolic, Redoxic, Hydrosol	Uc5.32	T7521 - Corangamite

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