Annual ryegrass in established orchard/fescue field

Hello,

 

I have a few acres of 2nd year orchard/fescue field. We baled it this year and it is a good, clean field (we use no chemicals on it). There are spots in it, however, that are still bare and it could be denser for sure. We had no rain this summer and then it all came in a few large rain events that prevented me from overseeding the field to get the stand even stronger and denser. Since annual ryegrass can be seeded now still, are there any negatives to overseeding the field with it and getting a mixed grass hay out of it (orchard/fescue/ryegrass)? I am in the Piedmont of Virginia if that matters and this hay is intended for horses.

 

Thanks!

Annual ryegrass in established orchard/fescue field