We have three John Deere DB- 60 planters with the Zipper closing wheel on one side of the units. We like the condition of the sidewall behind the Zipper when we first start planting. When the ground is a little more heavy we see that the Zipper closes better. The furrow is closed better on top and eliminates air pockets around the seed.
We have used spike closing wheels in the past but they seemed to move the seed in the furrow, not allowing for proper seed placement. The Zipper won’t do that. We believe we are getting better seed placement and better emergence behind the Zipper.