In article ,
PA wrote:
thanks every one for your input, I'm still in two minds though....
the bit I don't get is: if no residue is left in the soil, what about when
the roots of the weeds start to break down wont they release chemicals,
which will be then taken up by whats ever growing?
the trouble is I've got about 450 square meters to clear and its taken about
an hour to do one properly
and now I'm dreaming of roots

No, because it will be released into the soil, where it will be broken
down by bacteria. Apparently, some breakdown products disappear very
slowly from the anaerobic sludge at the bottom of ponds, but garden
soil has a very different (and much more vigorous) collection of
microorganisms.


Regards,
Nick Maclaren.