id	keyword
ajoaa-2215	maize
ajoaa-2215	weed
ajoaa-2215	cover
ajoaa-2215	crop
ajoaa-2215	density
ajoaa-2215	cover crop
ajoaa-2215	seed
ajoaa-2215	season
ajoaa-2215	depth
ajoaa-2215	weed seed
ajoaa-2215	species
ajoaa-2215	rotations
ajoaa-2215	soil
ajoaa-2215	field
ajoaa-2215	bank
ajoaa-2215	weed density
ajoaa-2215	agriculture