frost on alfalfa

[rdh]

I just got thru mowing a field of alfalfa that had some Johnson grass in it. We had a frost on it on wed. morning.
The JG has been burn't back real bad. Will the JG have a poison in it now? I know in the fall it is not good to feed it .
Thanks Ronnie

[wctyilfarmer]

if the frost was prior to cutting you may have a problem. in 2007 the advisor said on milo you cannot silage bale it after frost. but you can make dry hay out of it. baled over 500 5x5 bales.