Since I seem to not know much about weeds, my comment about cold hard steel still holds true. Weeds do not adapt to a disc or a turning plow. And yes we do have waterhemp here. Also roundup resistant barnyard grass. I also spray 20000 acres a year so I do have some experience in chemical control. Weeds will and do adapt to certain chemistries. Run over a weed with a disc blade and you’ll most likely end up with a dead weed.