Bermuda grass hay!

I hate trying to grow this grass for hay, I just had to turn my cows in on what was going to be a very nice 2nd cut but the field was being taken over by stem maggots, I was staying on top of it with what I could but It wouldn't have made it.  I can't tell you how mad I am because of the cost I put into this field with fertilizer and spray for weeds and insecticides.  Now, I have some fat and happy cows, but there goes some good winter feed down the drain.  What do y'all do about this recent new pest, the decimated my Alicia, now my Coastal.  

Thanks,

Bo

Bermuda grass hay!