In article ,
"W K" wrote:

BUT the real and less exciting aspect is that it allows crops to be sprayed
with even more herbicides.
There's evidence that thats bad.

To whom or what?
From an earlier discussion about glyphosate:
quote
From: Oz
Newsgroups:
uk.environment.conservation,uk.rec.birdwatching,uk .rec.gardening,uk.rec.n
atural-history,uk.business.agriculture
Subject: Is Glyphosate weed killer safe??
Date: Fri, 16 May 2003 07:07:22 +0100
Organization: acoohdb
Lines: 31
Message-ID:

LD50 for rats 4050 mg/kg
LC50 for rats (4h) 1.3mg/l air
(note greater than, implies they couldn't reach LD50).

So a 100kg person would need to ingest about 400g or 1lb of glyphosate
to have a 50% chance of killing themselves. I would suggest a more
active product would be better.

Note that diluted spray in the sprayer tank at 1.5kg active in 200L
means that you need to consume some 70L of product straight from the
sprayer. The acute lethal dose for water is about 5L, so you get to die
from water ingestion well before dying from the glyphosate. OK, that's
not the whole picture but you get the drift.

Glyphosate is rapidly excreted.

/quote

Note the point that you would die from water intoxication before the
glyphosate could kill you.

Now we could have a discussion about the toxicity of various detergents
used as wetting agents in commercial glyphosate preps but they aren't
herbicides. As best as I am aware they don't persist either.

BTW animals are not plants so the term herbicide might indicate that the
toxicity is not directed at animals.

Peter

--
Peter Ashby
School of Life Sciences, University of Dundee, Scotland
To assume that I speak for the University of Dundee is to be deluded.
Reverse the Spam and remove to email me.