It might seem counter-intuitive, but slowing down corn emergence may actually boost yields. Plot results are in, and it would seem that optimum distance between corn plants matters far less than uniform emergence. And achieving perfectly uniform emergence takes planting deep.
We already know that even emergence is key to top yields, but the mechanism to get there really did surprise even the most seasoned of agronomists. What’s more, in this Corn School Peter Johnson admits he was wrong. Yes, the fastest agronomy mouth in the east fully admits that he was shocked and surprised by the incredible impact of deep planting for even emergence.
In the video below, Johnson shares the yield difference between corn emerging on day 1, day 3, and day 5, and how some guidelines on how deep is too deep if ultra-even corn emergence is the goal.