Protip from my first year growing corn. Make sure you treat the tassels or ear worms will get in there and eat about 1/2 of every ear. There's some pesticides you can use, hit we just used vegetable oil, and it seemed to work.
Childhood torture memory of Dad making us put drops of olive oil on every ear of corn in our vegetable garden that was big as half a football pitch. And these caterpillars with saddles on their backs stinging me.