We took on one heck of chore late last spring. We disc and tilled and leveled five acres and reseeded in Bermuda. It was a new house and the five acres was a corn field years ago. It was far from being level and it was full of weeds. Have you ever dragged a hose over 5 acres? It about killed me and I was really glad we had a well to draw from. The lawn turned out really nice. But as fate would have it, the onions have showed up in force along with some clover and just a little crab grass. So I need to spray. I am thinking going ahead and hitting it with Roundup since from I can tell the Bermuda is still dormant. Everything I have read says that you need about 16 ounces per gallon. Does that sound right? Is there anything else I should add like 2-4-D? I've never used that before some I am clueless. Oh and we live in the west Tennessee area. Thanks for your help!