A practical approach to sub-surface acidity in the Mid North

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:

  1. Subsoil pH variability and distribution through the profile – does it correlate with topsoil pH maps?
  2. 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?
  1. How effective were historical lime applications in ameliorating soil acidity throughout the profile?

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