The PO-335A is a mounted, single-row top lifter for automatic filling of crates. It is the perfect solution to start a mechanical and effective harvest of leek. Thus, the machine is mainly used on medium-sized and large farms, that want to save on labour costs. The machine is characterised by its high variability in equipment and hight efficiency. The machine is carried in the lower guides of the tractor and an interaxle attachment frame. A share loosens the soil below the root. The rotating torpedoes are used to straighten and to lift up the haulm/tops and two cutting discs shorten the tops, which are too long. The cut leaves are ejected to the side. A root-shaker positioned directly on the coulter loosens the adhering soil, a second root-shaker removes more soil. The leek is then conveyed to the cross conveyor via the pick-up belt. A short root conveyor is fitted as standard at the transition from the pick-up belt to the cross conveyor to enable the leek to be optimally positioned on the latter. The combination of a telescopic box filling conveyor and tilting of the crate means that harvesting is particularly gentle on the crop and completely mechanised.