Peaty Flat - Sand over Bleached Sand
This soils at this site occur in the valley floor and are classified as an N1 peat soil type. The surface soil structure consists of high amounts of decomposed organic matter with a jet black O horizon colouration that is elluviating into the A horizon. This decomposition and leaching eventually moderates revealing the truer bleached sand component with no real textural change. Permanent water is a feature at depths of around 30 cm for a good percentage of the year as the landscape drains and recharges regional and shallow groundwater systems.
Rooting depth is largely restricted by the presence of water logging and is frequently no greater than around 150 -300 mm. Compaction from intensive land use can affect the available moisture and nutrient pool available for crops and pastures. The soil is prone to macro cracking when dry.
Soil pH increases in acidity to depth with a tendency towards being acidic. Fertility potential is rated as moderate with the availability of iron, zinc, manganese, phosphorous and copper potentially being limited. Liming is generally recommended to balance pH and to restore nutrient availability.
Further information on N1 soil can be found on page 264 of the The Soils of Southern South Australia, Part 1 or Part 2.
Detailed representative soil profile date is available for more than 1100 locations around South Australia and can be accessed through Nature Maps with a hand guide for using data sheets also available. A localised soil characterisation site data sheet provide indicative chemical analysis of a N1 soil type.
Mount Jagged (Irrigated) – Peaty Flat – Sand over Bleached Sand summed chart
Mount Jagged (Irrigated) – Peaty Flat – Sand over Bleached Sand stacked chart
Mount Jagged (Irrigated) – Peaty Flat – Sand over Bleached Sand soil temperature chart