Langhorne Creek Flat – Loam over Clay
This site closely relates to a F2 soil type – sandy loam over poorly structured brown clay. These soil types consist of thin hard sandy loam to sandy clay loam sharply overlying coarsely structured (prismatic or columnar) brown mottled clay. F2 soils are calcareous with depth, grading to heavy clay.
Soils pH is slightly alkaline at the surface and strongly alkaline from 20cm. Rooting depth is to 80cm, however few roots exist below 45cm. The very hard, dispersive clay subsoil hinders root development. Very high pH and sodicity from 45cm and toxic levels of boron from 80cm are serious barriers to root growth. The hard setting and sealing nature of the soils surface can hinder seedling emergence.
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 F2 soil type.
Langhorne Creek Flat – Loam over Clay summed chart
Langhorne Creek Flat – Loam over Clay stacked chart
Langhorne Creek Flat – Loam over Clay soil temperature chart