Two years ago we had a farmer come to us after tassel since the field was too wet before this.We put down 20 ga on butter yellow corn.It showed a 25 bu yield response.I don't like to start till at least V10.I still have 3 weeks if we need them.When the NTB on my Miller is pushing corn 12 " taller than the bar that's getting to the upper limit.Sure cleans off the belly pans nice.We looked at our monthly totals today which are just over 6 ".My busy season is coming.