I think you already have your answer, sparklingjewelacres, but I’ve been spending a lot of time reading about pasture and thought I would share in case someone’s interested. I’ve only been “doing” horses for a couple years, but I started with the mindset that if somebody slapped “horse” on the label the item was safe for horses. I’m becoming more and more cynical.
I have a mare for whom I have absolutely zero plans for future pregnancies. However, current endophyte studies seem to focus on mares/foals. What if they find further toxic effects in a few years? I don’t want that stuff in my pastures.
Identification:
UCDavis has some photos:
http://www.ipm.ucdavis.edu/PMG/WEEDS/tall_fescue.html
The problem for me with identifying from online photos is that many of the grasses look similar to me. For example:
http://learningstore.uwex.edu/assets/pdfs/A3637.pdf
Testing:
I’m not which labs even provide testing for consumers. For example, the Oregon State University lab mentions only registered commercial clients.
Auburn University tests plant tillers: $30
They also say: “Most labs will not test fescue hay due to erratic results.”
Here’s one that (I think) accepts samples from consumers; looks like it could get expensive:
http://tangentseedlab.com/tsli/pricelist2011web.pdf
The problem I see with testing (or county extension agent, which in my area they didn’t have a clue when I called) is that the one consensus I found is that the endophyte is only transmitted via seed. So I can identify and find that our grass is endophyte-free and then a neighboring field sets seed, it all blows into my pasture, and then who knows where I’m at.
Regarding Grazing of Lawns/Yards:
I’ve pondered our lawns/yard. Looks like lots of great grass there. The problem is I don’t know what the prior owner planted; heck, I don’t even remember what varieties I’ve planted. From what I’ve read, the endophyte symbiosis is great for the grass, providing resistance to insects and increased wear tolerance. That’s great for a golf course, since most golfers don’t eat grass. But since I don’t know whether I have endophyte-enhanced grass in my yard, I’d be afraid to let ours graze on the lawn.