GardenBanter.co.uk - View Single Post

hugh · 16-04-2010, 12:11 PM posted to uk.rec.gardening

In message ,
writes
In article ,
Malcolm wrote:

The reason is that it contains lots of useful trace elements.

When Hekla erupted in 1963, it covered an extensive area of Iceland with
ash which was so high in fluorides that it poisoned large numbers of
sheep and cattle :-(

Even fertilisers are toxic in excess. Iron is a classic one for
plants - animals are even more sensitive.

Indeed, but in this instance we neither have control over what's in the
dust nor how much lands, just as the Icelanders didn't in 1970 (it was
that year I now recall that the fluoride was expelled not 1963). It
shouldn't necessarily be regarded as "excellent fertiliser".

Most of this country (perhaps all) is short of fluorides. If the
ash is dense enough here to cause toxicity, we will have a global
winter on our hands and more serious things to worry about. With
the possible exception of Shetland and the VERY far north.

Regards,
Nick Maclaren.
Have some of our water - lot's in there.
--
hugh
"Believe nothing. No matter where you read it, Or who said it, Even if
I have said it, Unless it agrees with your own reason And your own
common sense." Buddha