A power seeding rate adjustment mechanism for a seeding implement has athreaded lead screw that is rotated by an electric motor. A nut threaded ontothe leadscrew is fixed to the shifter lever such that when the lead screw is rotated,the nuttranslates along the length of the lead screw to pivot a shifter lever. Theshifter leveris in turn coupled to a seed meter drive shaft to move the shaft transversely,therebymoving fluted feed wheels in or out of the seed cups. A switch carried by theoperator in the pulling tractor actuates the motor. The adjustment mechanismenables the operator to make adjustments on-the-go without stopping or leavingthetractor. The motor can be disengaged from the lead screw and the screw turnedby ahand crank for manual adjustment in the event of a power failure to the motor.
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