id	keyword
afs-72790	species
afs-72790	cultivar
afs-72790	sod
afs-72790	fertilization
afs-72790	effect
afs-72790	cover
afs-72790	values
afs-72790	nitrogen
afs-72790	peat
afs-72790	mixture
afs-72790	analysis
afs-72790	finland
afs-72790	production