User blog comment:ZXSpidermanXZ/GMOs/@comment-5112967-20130202015341/@comment-4052371-20130204194032

Here's a version of the story from a more reputable source :

http://www.wired.com/wiredscience/2012/06/cyanide-and-poisoned-cows/

Apparently that grass wasn't even genetically modified. It's just a hybrid of two different grasses : Bermuda grass and star grass. It turns out that a drought stressed the grass and somehow caused it to produce toxins as a defense mechanism. That defense mechanism came from the star grass part of the hybrid.

...None of this had anything to do with GMO at all.