Explain yourself.  I happen to disagree.

If you place the AMS in a band, you have that ammonium nitrogen readily available for the corn plant, and you have sulfur right there as well.  Also, Ammonium nitrogen should not be harmful to the corn seedling, as the urea might.   And, placing that AMS in a zone will lower the pH in that zone, making your P more readily available. 

Agree?

What am I seeing wrong?