Too many unknown variables. Grass looks like it was mowed, fescue is a pretty safe bet in this part of the world. Here in northern Ohio, I took an eroded farm with less than 1% organic matter and healed it with cows and grass. The clay knobs, formerly the worst spots on the farm, now test at 4% organic matter and have 8 inches of topsoil. Managed intensive grazing, graze heavy then fence them off so the grass can regrow, is what worked, and surprisingly quickly, for me. How much grass do you have? Mob grazing works better with numbers.