Pinnaroo Flat – Sandy Clay over Clay

This site closely relates to a D3 soil type – sandy loam over poorly structured red clay. This soil type has a thin sandy loam over coarsely structure dispersive red clay. It becomes calcareous with depth.

The soil pH is neutral at the surface and becomes strongly alkaline with depth. Rooting depth is approximately 75cm, but few roots extend below 45cm. The dense dispersive subsoil inhibits uniform root growth. The High pH, sodicity and boron from 45cm restricts root development. Seedling emergence can be slightly limited due to sealing of the soil surface.

Further information on A5 soils can be found on page 106 of The Soils of Southern South Australia, Part 1 or Part 2.

Detailed representative soil profile data is available for more than 1100 locations around South Australia and can be accessed through Nature Maps, with a handy guide for using data sheets also available. A localised soil characterisation site data sheet provides indicative chemical analysis of a D3 soil type.

Pinnaroo Flat – Sandy Clay over Clay summed chart

Pinnaroo Flat – Sandy Clay over Clay summed chart

Pinnaroo Flat – Sandy Clay over Clay stacked chart

Pinnaroo Flat – Sandy Clay over Clay stacked chart

Pinnaroo Flat – Sandy Clay over Clay soil temperature chart

Pinnaroo Flat – Sandy Clay over Clay soil temperature chart