I think generally, a majority of corn was planted in NE IL after the prime potential yield date, having nothing to do with insurance dates. The Iowa State/U of IL "N-rate calculator" doesn't seem to have any input for "potential yield", only N price, corn price, & locale. We've used the calculator for years and are happy with it's suggestions.

However, with known potential reduction (I know, it ain't over 'til it's over....Yogi) should one ratchet the suggested rates downward? In a particular set of circumstances, I see the calculator used 151 different corn trials to arrive at it's recommendation. But, my guess that's based on average years, which 2019 is not. There are rumors of fire-sale anhydrous prices now due to lack of use in early spring due to wetness and now prevent plant acres of corn.

So, what are the feelings about....

1. Reducing rates (assuming sidedress option to finalize application rate)

2. Going strictly by the suggested rates

3. Possibly increasing rate due to potential corn price run-up after all the plant acre numbers are in later.

Just looking for bonafide discussion.