My soil tests from the past few years are showing I'm deficient in copper and my agronomist recommended applying some copper.  I forgot to put it in earlier this year.  In the next few weeks I'll be putting generic Quilt XL on my corn that should be in the V10-V12 range.  There will be no additional products in the tank.  The labels I read are all over the place for timing of copper.  Is it worth my time to put it in with this application?