Abstract: The device consists of two longitudinally extending side frame members connected at one end to a diking plate and at the other end to a transverse frame member which in turn is connected to a hitch which allows the frame and diking plate pivotal movement in both a vertical and a horizontal plane. Connected medially of each side frame member is a pillow block bearing which bearings support, on a single axis, a pair of spoked wheels. Each of the spoked wheels has one spoke of greater length than the remaining spokes which longer spokes extend outward in a common radial plane. As the spoked wheels turn, the diking plate is lifted periodically from the ground to provide a damming action in a furrow in the earth.