I made a post on my blog detailing some of the different methods that I have found through a ton of research on how to convert old pasture made up of nonnative
perennial grasses into a more productive ecosystem. My focus is mainly on providing wildlife habitat, but these methods could be used to plant literally anything else that you are trying to grow. I go through some of the pros and cons of different methods including mowing, burning, plowing etc. Check it out if you're interested.
https://hunterseden.blogspot.com/2019/10/managing-nonnative-cool-season.html?m=1