A parallel arm furrow opener assembly defines upper and lower front pivot axesandupper and lower rear pivot axes oriented horizontally and perpendicular to atraveldirection. A furrow opener and a packer wheel are attached to a rear link ofthe assembly.In operation the furrow opener and the packer wheel are in fixed positionswith respect tothe rear link member, and a bias element is operative to exert a downward biasforce onthe furrow opener assembly. A front pivot line connecting the upper and lowerfrontpivot axes is parallel to a rear pivot line connecting the upper and lowerrear pivot axes,and the front and rear pivot lines are oriented at a pivot angle with respectto a verticalorientation, and the pivot angle is adjustable to vary a furrow depth of thefurrow.
