In the last two years, the issue of ammonia emissions from agriculture has come to prominence, and it is now perhaps the greatest long-term environmental challenge facing local farmers.The basis of the problem is clearly laid out in the Making Ammonia Visible report published in December 2017 by the expert group led by former UFU President John Gilliland. It highlighted the damage that ammonia does to important habitats, and the government targets and international obligations in place to cut emissions, and therefore improve air quality.