In article ,
Eddy writes:
|
| I have had word from a scientist working for USDA, the United States
| Department of Agriculture, that in their investigations of vinegar they
| have found it comparable in effectiveness to herbicides like paraquat,
| but it does not act systemically and so will not kill roots. They
| advise that the "safest" root-killing herbicide that exists is
| glyphosate.

That's a pretty damning indictment of paraquat! There are plenty
of effective, non-persistent defoliants, including ammonia, brine and
sodium chlorate. Note that the latter two are non-persistent in UK
conditions, but not always in USA ones.


Regards,
Nick Maclaren.