A row unit (18, 180) for a seeding machine (10) operable to plant seeds into soil, the row unit (18, 180) is disclosed. The row unit (18,180) comprises:a frame (30, 130)； a gauge wheel (132) operable to engage the soil and support the frame (30, 130) via a gauge wheel arm (166) connected between the gauge wheel (132) and the frame (30, 130)； a seed dispenser supported by the frame (30, 130) and operable to dispense seeds into the soil； a depth stop assembly (190) including a stop (186) setting an upward travel limit of the gauge wheel (132) with respect to the frame (30, 130), and a handle (194) that is lockable and releasable to move the stop (186) to select among a plurality of seeding depths； a downforce adjustment mechanism (174) operable to generate a variable amount of downforce to be applied through the gauge wheel (166) and the gauge wheel (132) to the soil； and a downforce sensor (148) incorporated into the depth stop assembly (190) and movable therewith, wherein the depth stop assembly (190) includes a multi-piece body (208) having a first piece (2081) receiving the handle (194), and a second piece (2082) defining a pivot (200) joining the depth stop assembly (190) to the frame (30, 130), and wherein the first piece (2081) of the multi-piece body (208) includes a handle-receiving receptacle portion (216), a fastening portion (2102) for fastening to the second piece (2082) of the multi-piece body (208) adjacent the pivot (200), and a portion between the handle-receiving receptacle portion (216) and the fastening portion (2102) forming a housing (220) of the downforce sensor (148).
