manure is spread as fertilizer in the fields and the ammonia it contains escapes into the atmosphere york monier also escapes from the stables and particulate matter is formed when ammonia combines with nitrogen oxides from road traffic been. alarming conclusion some 40 percent of all the fine particulate matter in germany is generated by agriculture and above all by factory farming. ammonia gas from farm in your blankets the ground and reacts among other things with nitrogen oxides from traffic to form ammonium nitrate in the atmosphere it may become a snitch. high omonia levels are produced in northwestern germany a center of industrial animal farming west winds carry the gas across the country meat production is a key industry in germany could that be why there's so little public debate about agriculture is role in generating particulate matter. madeon victim and feel big agrees with films assessment. if we want to tackle the problem of particulates matter we need to see fewer wood burning stove less livestock farming or cutting emissions from livestock farming less ammonia. that would reduce