Hon DAVID PARKER: Well, in addition to the long list of measures that I've already outlined, we also have a cap on the amount of synthetic fertiliser that can be applied to any hectare of pastoral land in any year. It's a limit of 190 kilograms per hectare per annum, which knocks off the top of that application bell curve. But sometimes I had reports that over 300 kilograms of nitrogenous synthetic fertiliser was being applied per hectare per annum, and that was unnecessarily high.