Abstract: A trailer-like apparatus adapted to be towed by a farm implement for depositing seed from a supply hopper into the ground at a controlled spacing substantially independent of the vehicle's relative ground speed. In a first embodiment, an endless chain having pockets for receiving individual seeds from a supply hopper affixed to predetermined lengths of the chain is driven by a sprocket wheel which is, in turn, belt-coupled to a ground-engaging towed wheel of the vehicle. The chain is longitudinally aligned rearward of a disk-like colter which digs the trench into which the seeds ultimately fall and the trench is then closed as the vehicle's frame supporting wheels pass by the trench. Means are provided for elevating the colter, the chain-driving wheel and the supply hoppers when, at the end of a planting row and when moving to or from the planting site.