Plowing is about the worst thing for soil you can do. It's had years to build its tilth and black soil exposed to sunlight is damaging...the weeds will explode ..its mother natures way of healing the wound..
I'm taking out my crp this year about 40 acres. That ground won't get tilled by me for sure...its been in native grass for 30 years..
My plan is to burn down with glysophate plant corn and fly on rye in late sept ..run cows all winter..
I baled off all the grass last Oct
Little blue stem is a tough kill with roundup. I had some in crp that hung around 3-4 years ..when we do our burn down its not actively growing yet. Clethodome in beans seems to finally get it..
Are you trying to raise just rye?