Ammonia emissions from landspreading of slurry

Provide a review of ammonia emission abatement techniques for land spreading of slurry based on peer reviewed literature. Including a focus on both effect of spreading approach (ie splashplate, trailing shoe, injection, etc.) and amendments (i.e. acidification, additives, etc.) – please also include any other potential abatement identified in the literature. Consider any potential negative aspects of emission reduction approaches (i.e. pollution swapping, compaction, etc.). Identify and quantify potential reduction to emissions alongside any identified negative effects. Consider the role of soil nitrogen cycling in ammonia emissions from land application of slurry.