"GH" wrote in message
ups.com...
I am not experienced but does he need to know the halflife or the
breakdown rate of the herbicide you recommended?

There is probably a low risk of him ingesting the chemicals through
the
vegetables he plans grow there; one reason being that only the
strong
ones would survive the weed killer in the soil.
The safety data is all out there on line if he wants it. Glyphosate is
one of the safest herbicides we've ever had and having read the
available info I have no qualms about using it in accordance with the
instructions prior to planting or sowing edible crops. My preference
is just to use it for the initial clean up of a plot and then use
mechanical methods thereafter (hoeing, handweeding etc)
--
Rod

My real address is rodthegardeneratmyisp