JS i have noticed the same thing about the mineral i've put it out for several years and it doesn't seem like they touch it, but it makes me feel better using it.
CB i used to have bahia before i had the jiggs sprigged in 07. I like the jiggs alot better. I dont have problems with it in my pastures at the house that have cows on it. I have a 40 acre jiggs hayfield in Kountze that i have to spray every year to keep bahia out. It is usually around the outside of the field. I truly think it is from my hay equipment. I have cleaned baler,rake,cutter,tractor,etc before going to that field, i just think some of the bahia seeds hide on the equipment. The bahia is always on the outside of the field where i start cutting or baleing. Now that being said i bale a field that is argentina and you drive through a gate and you are in the jiggs field, never had a problem with that one getting bahia in the jiggs and i have never cleaned the equipment between fields. I dont think the argentina spreads as bad as the pensacola does. But i do agree that its hard to fight bahia in this area. I am really liking the argentina, it produces pretty good, not as good as the jiggs though. The bahia does not require near the fertilizer the jiggs does though. I do think i'll try plantig rye grass on all my pastures next year and take your advice on baleing it.
BM baleing the rye grass does remind me of coastal in late fall as you said. You hit the nail on the head.