Providing growers and advisers with information, resources and tools to improve the management of surface and subsurface soil acidity in South Australia.

Acid Soils SA is a collaborative project which provides resources, information and research updates to underpin best practice surface and subsurface soil acidity management in South Australia.

The project will generate new information regarding lime movement and effectiveness when applied to the surface of different soils and environments in modern farming systems.  It will also work to identify, develop and validate novel acidity management practices such as lime forms, placement and incorporation methods, such as spading or topsoil slotting.

Soil acidity and liming workshop

Wednesday 23 March 2022
Borderdowns Tintinara Football Club, Coonalpyn

Growers and advisers are invited to the 2022 Acid Soils SA workshop and field trip which will explore the management of surface and subsurface acidity.

Hear from leading experts on the cause and effect of soil acidity, soil pH mapping and NDVI, lime sources and application rates, recent research results from current lime trials across SA and on-farm decision support models. The field trip component at Heinrich’s Farm will look at their recent acid soils trial, and review the trial design and results. Presenters will also cover strategies for deep ripping sandy ground, pH mapping and liming and yield penalties from acid soils.


of cropping land in SA currently has surface soil acidity (0-10cm < pH 5.5) or has potential to become acidic


of lime was applied in SA per annum between 2015 and 2018


per annum in lime applications is required to correct the current rates of acidification


of lime is required immediately in SA to raise current topsoil pH levels to 5.5


Careful management of soil acidity can produce great cost savings for growers in the short and medium term.

Click through our tools, resources and information to better diagnose and manage soil acidity. While most resources are designed for grain growers (cereals/pulses/oilseeds), information and tools are applicable to grazing and horticultural enterprises.

Project Partners

The GRDC Acid Soils SA project, formally titled New Knowledge and Practices to Address Topsoil and Subsurface Acidity Under Minimum Tillage Cropping Systems of South Australia, is a Grains Research and Development Corporation (GRDC) investment which brings together project partners from South Australia’s Department of Primary Industries and Regions, the South Australian Department for Environment and Water, the University of Adelaide, Trengove Consulting, Penrice and AgCommunicators.

〉 Brian Hughes, PIRSA
〉 Stephen Loss, GRDC
〉 Luke Mosley, University of Adelaide
〉 Tim Herrman, Department for Environment and Water
〉 Belinda Cay, AgCommunicators
〉 Brett Masters, PIRSA
〉 Bonnie Armour, PIRSA



〉 Sam Trengove, Trengove Consulting
〉 David Woodard, PIRSA
〉 Andrew Harding, PIRSA
〉 Rhiannon Schilling, PIRSA-SARDI
〉 Nigel Fleming, PIRSA-SARDI
〉 Andrew Graetz, Penrice
〉 Ruby Hume, University of Adelaide