As I said in another comment, most of the food produced by these farmers is destined for export.
Other European countries using much less intensive food production methods over much larger areas of land can take the increase in emissions quite well.
This isn't a about global warming, though these compounds are definitely not helping the situation; this is about nitrogen rich compounds ending up in the ground where it shouldn't be.
So now it'll be a local problem... just for some other poorer people.