A lock assembly is provided for a row planter unit to maintain the unit in araisedtransport position and to relieve stress on the hydraulic system of theplanter unit. The lockassembly includes a lock arm pivotally mounted to the bracket assembly of therow planterunit for selective receipt in a notch or detent on the mounting plate or mastof the bracketassembly so as to retain the row unit in the raised transport position. Thelock arm can bedisengaged from the bracket assembly notch or detent, such that the planterunit can belowered to the field use position.
