The primary objective of this project is to increase the capacity of producers and advisors in the Mid North Region of South Australia to cost-effectively measure, target and manage sub-surface acidity and acid throttles. It will address three core research questions:
- Subsoil pH variability and distribution through the profile – does it correlate with topsoil pH maps?
- Value proxy layers to direct subsoil sampling – can we use alternative soil data layers (e.g. Electrical Conductivity/elevation/radiometrics etc.) to more accurately target strategic subsoil sampling and amelioration?
- How effective were historical lime applications in ameliorating soil acidity throughout the profile?