Lameroo Flat – Loam over Heavy Clay

This site closely relates to an F2b soil type – sandy clay loam over dispersive brown clay. This soil type has a sandy loam to sandy clay loam surface layer, with a coarsely structured dispersive brown clay sub surface. The subsurface becomes calcareous with depth.

The soil pH is alkaline at the surface and becomes strongly alkaline with depth, grading to acidic in the substrate. Rooting depth is approximately 45cm. The hard, sodic subsoil prevents even root distribution patterns. High boron, pH, sodicity and salinity from a shallow depth, approximately 10-20cm impede root growth further. Seedling emergence can be impaired by hard, sometimes dispersive surface soil.

Further information on F2 soils can be found on page 184 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 an F2b soil type.

Lameroo Flat – Loam over Heavy Clay summed chart

Lameroo Flat – Loam over Heavy Clay summed chart

Lameroo Flat – Loam over Heavy Clay stacked chart

Lameroo Flat – Loam over Heavy Clay stacked chart

Lameroo Flat – Loam over Heavy Clay soil temperature chart

Lameroo Flat – Loam over Heavy Clay soil temperature chart