On 14/09/2015 20:32, Jeff Layman wrote:
On 14/09/15 08:24, Mervington wrote:
Martin Brown;1016081 Wrote:
On 10/09/2015 11:33, Janet wrote:-

My advice; buy from a farm/industrial supplier.
Prices may *look* higher but you're buying industrial-strength;
correct
dilution (follow the label exactly) makes it far more economical than
anything sold in a GC.-

I guess it depends a lot on how much you use in a season. I find a 250ml

bottle lasts me two or three years since I only really use it against
pernicious weeds like ground elder, thistles and bindweed.

They are all in retreat (although bindweed seeds germinate often).

--
Regards,
Martin Brown

Thanks for the comments.

I have been using glyphosate for years - which I buy in bulk. I have
an acre of garden

The problem with it is that is you 'misapply' it will kill what you
didn't want it to. The old Weedol was largely a foliage killer and the
odd splash was usually no tragedy.

The replacement for the old Weedol is acetic acid based. In other
words, it is strong 'vinegar'. It can only be bought in liquid form,
and only in diy quantities.

If you misapply any weedkiller, and you know it has gone somewhere it
shouldn't, you normally have some time to correct the mistake. Most
certainly with glyphosate you should spray (or preferably use a hose) to
wash well on the top and underside of the leaves you have sprayed with
the glyphosate.

I don't know what "period of grace" you have with paraquat or diquat.

You don't, not that it matters as Paraquat (Gramoxone) has been banned
for several years now and Diquat starts to work as soon as it hits the
leaf so by the time you realise and then organise water it's to late. If
you use it on a sunny day then you will see signs of it working in less
than half an hour, but you get better results by spraying at dusk so
that it has all night to be absorbed into the plants.
The problem with Diquat is that it has virtually no effect on grasses
esp annual meadow grass.