> > Forgive my incompetence ans insolence here, but I doubt that herbicides
> > are target specific.

> Serge,

> Some kinds are *relatively* specific, as with the 2-4-D types that will
> kill broad-leaf (dicot) plants while sparing monocots and gymnosperms
> (grasses/sedges and conifers), depending on concentration.
> Jon. Anderson

And, of course, those like Roundup which can be applied to
individual plants are very specific, i.e. those plants you
actually apply it to. As well as breaking down rapidly,
etc as mentioned by someone previously.

- Don Baccus, Portland OR <donb at rational.com>