Lime and managing soil health GRDC
A lime trial run by NSW DPI from 1992 to 2010 (18 years) is one of a number of trials that only found subsoil amelioration when soil pH in the topsoil was kept above (Li, et al. 2019). Microfine lime was incorporated into the top 10cm and soil pH maintained above for the trial duration to counteract acidification and leaching.