Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

Using Caustic Soda to Kill plants ?

821 views
Skip to first unread message

Kay Easton

unread,
Mar 16, 2003, 1:09:26 PM3/16/03
to
In article <d5497vg9vjq6lsrim...@4ax.com>, eddy
<edd...@AOL.com> writes
>Surely this would be a good way to destroy a plant that it proving
>hard to get rid of.
>Maybe salt ,sodium chloride is another way instead of using chemical
>weed killers.

erm ... in what way does a chemical used as a weed killer differ from a
chemical weed killer? ;-)

>Would regular doses of salt water kill off a plant ?

Probably.
>

--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/garden/

Nick Maclaren

unread,
Mar 16, 2003, 2:08:28 PM3/16/03
to
In article <mnUIpUCW...@scarboro.demon.co.uk>,

Kay Easton <k...@scarboro.demon.co.uk> wrote:
>In article <d5497vg9vjq6lsrim...@4ax.com>, eddy
><edd...@AOL.com> writes
>>Surely this would be a good way to destroy a plant that it proving
>>hard to get rid of.
>>Maybe salt ,sodium chloride is another way instead of using chemical
>>weed killers.
>
>erm ... in what way does a chemical used as a weed killer differ from a
>chemical weed killer? ;-)

Quite. But salt, sodium chlorate and even caustic soda are not things
that will cause long-term pollution when used in small quantities.

>>Would regular doses of salt water kill off a plant ?
>
>Probably.

You might have to use quite a lot on things like asparagus and thrift!


Regards,
Nick Maclaren,
University of Cambridge Computing Service,
New Museums Site, Pembroke Street, Cambridge CB2 3QH, England.
Email: nm...@cam.ac.uk
Tel.: +44 1223 334761 Fax: +44 1223 334679

cbw

unread,
Mar 16, 2003, 2:46:29 PM3/16/03
to
In article <d5497vg9vjq6lsrim...@4ax.com>, eddy
<edd...@AOL.com> writes
>Surely this would be a good way to destroy a plant that it proving
>hard to get rid of.
>Maybe salt ,sodium chloride is another way instead of using chemical
>weed killers.
>Would regular doses of salt water kill off a plant ?
>
Yes - this has an ancient lineage. The Romans sowed Cathaginian field
with salt (?100BC??)

There are more effective chemicals and methods.

--
cbw

Martin Brown

unread,
Mar 16, 2003, 5:07:35 PM3/16/03
to

eddy wrote:

> Surely this would be a good way to destroy a plant that it proving
> hard to get rid of.

It's a lousy choice. Caustic soda is an aggressive corrosive chemical
that will take your flesh off.

Sodium chlorate will work a lot better against plants if you don't mind
its persistence.

Cheap industrial ways to make caustic soda have a tendency to cause
mercury pollution. Kitchen sink chemicals are not necessarily enviro
friendly. Glyphosate would probably be less environmentally damaging all
round.

> Maybe salt ,sodium chloride is another way instead of using chemical
> weed killers.
> Would regular doses of salt water kill off a plant ?

If you use enough then yes. But don't expect to grow much there for a
long while afterwards.
(much more effective and persistent in dry countries)

Regards,
Martin Brown


Nick Maclaren

unread,
Mar 17, 2003, 3:20:59 AM3/17/03
to

In article <gnniOAAVSNd+Ew$v...@coalole.demon.co.uk>,

Sowing fields with salt would not harm ones in the UK for more
than a season. In the near east, there are many places where
the rainfall is never enough to drain into the groundwater, and
there salt accumulates. In the UK, that is not so by a large
margin.

Helen Deborah Vecht

unread,
Mar 19, 2003, 6:16:31 AM3/19/03
to
Thus spake nm...@cus.cam.ac.uk (Nick Maclaren)


> Sowing fields with salt would not harm ones in the UK for more
> than a season. In the near east, there are many places where
> the rainfall is never enough to drain into the groundwater, and
> there salt accumulates. In the UK, that is not so by a large
> margin.

And there was I thinking Cambridge had similar overall rainfall to
Jerusalem...

--
Helen D. Vecht: helen...@zetnet.co.uk
Edgware.

Nick Maclaren

unread,
Mar 19, 2003, 7:00:00 AM3/19/03
to

In article <200303191...@zetnet.co.uk>,

Helen Deborah Vecht <helen...@zetnet.co.uk> writes:
|> Thus spake nm...@cus.cam.ac.uk (Nick Maclaren)
|>
|> > Sowing fields with salt would not harm ones in the UK for more
|> > than a season. In the near east, there are many places where
|> > the rainfall is never enough to drain into the groundwater, and
|> > there salt accumulates. In the UK, that is not so by a large
|> > margin.
|>
|> And there was I thinking Cambridge had similar overall rainfall to
|> Jerusalem...

See the climate FAQ :-)

Yes, it does, but it has a rather lower evaporation.

0 new messages