id	keyword
afs-5837	manure
afs-5837	soil
afs-5837	peat
afs-5837	slurry
afs-5837	nh3
afs-5837	volatilization
afs-5837	surface
afs-5837	peat manure
afs-5837	concentration
afs-5837	ammonia
afs-5837	barley
afs-5837	application
afs-5837	experiment