id	keyword
ajoaa-4829	biochar
ajoaa-4829	hectare
ajoaa-4829	yield
ajoaa-4829	planting
ajoaa-4829	grains
ajoaa-4829	cm planting
ajoaa-4829	rice
ajoaa-4829	distances
ajoaa-4829	application
ajoaa-4829	table
ajoaa-4829	effect