Posted 7/6/2016 04:00 (#5394395 - in reply to #5394294) Subject: RE: Mg Foliar for Corn?
Use epsom salt. It is magnesium sulfate, so it contains S too. None of that fancy expensive stuff has one iota of advantage over epsom salt for feeding the plant.
Fertigation will probably work, but spraying it on is even better. What goes onto the soil doesn't do any good.