A disc harrow comprises at least one row of discs 4a,b and at least one pair of rollers 9,10 lying behind the said at least one row of discs. The at least one pair of rollers comprises at least one cage roller 10 and at least one comb roller 9 which are kinematically interconnected with each other for joint rotation with a predetermined transmission ratio. The comb roller 9 is more advanced towards the discs 4a,b with respect to the cage roller and has a smaller diameter.
