I knew a race horse breeder who bought a place in Missouri back many years ago. It had very rich fescue pastures. Little did he know that he was going to have most of his mares abort, and or not have milk when or if they foaled. It nearly put him out of business. Here we have quack grass, it was imported from Ireland as "everlasting grass" many years ago. It sure is ever lasting. Now I spend countless hours digging out the roots by hand, if you miss even a small piece of the rhizome roots, you get a new plant. the worst thing you can do is till it, as you break up all the rhizomes, and they all grow back with a vengance. The horses love eating it, and there's no toxins like the fescue though, and that's a good thing. Round Up will eventually kill it if you don't mind using chemicals.
