Fertiliser surge isn’t delivering crop results
Australian farmers spend almost $500 million a year on nitrogen fertiliser which apparently never delivers a cropping advantage.
At the same time, the rest of the world is gaining greater productivity results from rising fertiliser use while Australian crop production has basically plateaued.
That is despite Australian farm increasing nitrogen (N) use by 65 per cent between 2010 and 2015.
Queensland University of Technology’s (QUT), Professor Peter Grace, has calculated about 39pc of the N applied as synthetic fertiliser to crops in 2015 was lost from the soil as a result of increasing natural leakage issues ranging from atmospheric losses to rainfall runoff.
That loss was worth about $475 million in wasted input value in 2015, of which about $326m (or 37pc) was lost by the grain sector.
you can view the article online.