There are a 100 ways to do this and 99 of them are probably correct. Turf is pretty simplistic and we should try not to over analyze it. I just know what has worked for me over the years, lot of it learned through trial and error.
Example, grass growing up through blue rug junipers many try to pull it. I spray over the top with round up, kills the grass and does not harm the juniper.
The Arena, the Field of Battle, the site where the fight actually takes place is our own heart and all of our Inner Man. The time of Battle is our whole life.