I've bought Roundup (the actual name not a derivative) in the last year
and it's effects seem to be only a fraction of what they used to be.

However, friends who keep chickens, pigs etc. and get their supplies
from an agricultural merchant albeit in quite large containers, lent me
some of their concentrate named Roundup recently and wow, what a
difference, the weeds reacted within almost days unlike my stuff I had
originally used.

Is the Roundup sold by a proper agricultural outlet different to the
stuff being sold at Garden centres etc.?
If so, How do I make sure I get the effective type apart from going over
to the outlet used by my friends which is some way away?

Is it in the ingredients, i.e. is it the actual concentrate ratio or
something else?

Janet

On Sun, 9 Oct 2011 16:28:10 +0100, Janet Tweedy
wrote:

I've bought Roundup (the actual name not a derivative) in the last year
and it's effects seem to be only a fraction of what they used to be.

However, friends who keep chickens, pigs etc. and get their supplies
from an agricultural merchant albeit in quite large containers, lent me
some of their concentrate named Roundup recently and wow, what a
difference, the weeds reacted within almost days unlike my stuff I had
originally used.

Is the Roundup sold by a proper agricultural outlet different to the
stuff being sold at Garden centres etc.?
If so, How do I make sure I get the effective type apart from going over
to the outlet used by my friends which is some way away?

Is it in the ingredients, i.e. is it the actual concentrate ratio or
something else?

Janet

I bought a small bottle of "retail" Roundup concentrate a few weeks
ago. Mixed as per instructions and put into a hand sprayer. I'd say
the area I sprayed reacted within hours and the above-ground growth
was dead same day. I sprayed on a dry, sunny day. There are, though,
different formulations and, IIRC, some study identified serious
health/environmental risks of some of the constituents in certain
agricultural mixes.

I don't really like Roundup and only use it when I have a particular
reason - most of the time I use simple Glyphosate (which is the main
constituent of Roundup of course).

Cheers, Jake
================================================== ==========
URGling from the less wet end of Swansea Bay where it's ....
wet!

www.rivendell.org.uk

On 09/10/2011 16:28, Janet Tweedy wrote:
I've bought Roundup (the actual name not a derivative) in the last year
and it's effects seem to be only a fraction of what they used to be.

However, friends who keep chickens, pigs etc. and get their supplies
from an agricultural merchant albeit in quite large containers, lent me
some of their concentrate named Roundup recently and wow, what a
difference, the weeds reacted within almost days unlike my stuff I had
originally used.

Is the Roundup sold by a proper agricultural outlet different to the
stuff being sold at Garden centres etc.?
If so, How do I make sure I get the effective type apart from going over
to the outlet used by my friends which is some way away?

Is it in the ingredients, i.e. is it the actual concentrate ratio or
something else?

What is the glyphosate concentration (grams/litre) for each of the
products?. What are the dilution instructions for each of the products?

--

Jeff

On Sun, 09 Oct 2011 18:39:37 +0100, Jeff Layman
wrote:

On 09/10/2011 16:28, Janet Tweedy wrote:
I've bought Roundup (the actual name not a derivative) in the last year
and it's effects seem to be only a fraction of what they used to be.

However, friends who keep chickens, pigs etc. and get their supplies
from an agricultural merchant albeit in quite large containers, lent me
some of their concentrate named Roundup recently and wow, what a
difference, the weeds reacted within almost days unlike my stuff I had
originally used.

Is the Roundup sold by a proper agricultural outlet different to the
stuff being sold at Garden centres etc.?
If so, How do I make sure I get the effective type apart from going over
to the outlet used by my friends which is some way away?

Is it in the ingredients, i.e. is it the actual concentrate ratio or
something else?

What is the glyphosate concentration (grams/litre) for each of the
products?. What are the dilution instructions for each of the products?

Yes, tell me too, please. B&Q sell a "Value" cheapie glyphosate whosee
stated concentration seems to be the same as that of their full-price
brand, and it's hard to see why.

--
Mike.

On 09/10/2011 16:28, Janet Tweedy wrote:
I've bought Roundup (the actual name not a derivative) in the last year
and it's effects seem to be only a fraction of what they used to be.

Bad mistake unless you really like Monsantos cavalier attitude to GM.
You are paying way over the odds for a Brandname(TM). If you are a
farmer and have bought "Roundup Ready" seeds you may have no choice.

However, friends who keep chickens, pigs etc. and get their supplies
from an agricultural merchant albeit in quite large containers, lent me
some of their concentrate named Roundup recently and wow, what a
difference, the weeds reacted within almost days unlike my stuff I had
originally used.

The agricultural stuff is sold at a higher strength. But if it is
diluted correctly you should see a more or less complete kill in a
fortnight. If it is any faster than that you have overdosed and are
wasting your money.

Is the Roundup sold by a proper agricultural outlet different to the
stuff being sold at Garden centres etc.?

Of course. The stuff in garden centres these days is water with some
impurities added. Choose the product with the highest concentration of
the active ingredient, glyphosate in it do not go by brandname!

They are trying hard to sell you windscreen wash prediluted as well!

If so, How do I make sure I get the effective type apart from going over
to the outlet used by my friends which is some way away?

You can't officially buy the agricultural version unless you have an
appropriate pesticides license.

Is it in the ingredients, i.e. is it the actual concentrate ratio or
something else?

Pay attention to the g/L of the active ingredient rather than the
brandname. And beware of products sold that include other components to
give a fast kill as reassurance to amateur gardeners (and here I use
amateur in the pejorative sense).

Used correctly diluted glyphosate should not show much effect on weeds
for the first week unless it is exceptionally sunny and warm.

Regards,
Martin Brown

In article , Mike Lyle
writes
What is the glyphosate concentration (grams/litre) for each of the
products?. What are the dilution instructions for each of the products?

Yes, tell me too, please. B&Q sell a "Value" cheapie glyphosate whosee
stated concentration seems to be the same as that of their full-price
brand, and it's hard to see why.


Haven't got the container of the one I bought though I used it in the
concentration recommended.

This was why I was asking if the actual concentration/strengths of the
chemical was printed on the label so i could compare solutions
--
Janet Tweedy

In article , Martin Brown
writes
The agricultural stuff is sold at a higher strength. But if it is
diluted correctly you should see a more or less complete kill in a
fortnight. If it is any faster than that you have overdosed and are
wasting your money.


Oh yes, sorry it did take about 10 days to really go yellow (we were
preparing a section of what had been rough pasture for planting shrubs
etc.) but you did see an effect even on nettles and ivy within about 3 -
4 days

In my own garden i was trying to get rid of a lot of ivy growing through
from next door through the stock fencing and the hawthorn hedge as it
was getting difficult to see where the blinking Muntjac were getting in
and where any dogs might get out
--
Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk

In article , Martin Brown
writes
Pay attention to the g/L of the active ingredient rather than the
brandname.


And what should I be aiming for?
--
Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk

On 10/10/2011 00:29, Janet Tweedy wrote:
In article , Martin Brown
writes

Pay attention to the g/L of the active ingredient rather than the
brandname.

And what should I be aiming for?

I usually pick the own brand version with the best concentration/price.

Although having seen the unfavourable reviews on B&Q website I would
probably avoid the Bayer "super strength" sachets:

http://www.diy.com/diy/jsp/bq/nav.js...LAID=326891557

I don't use all that much of it in a season. Just a few hits on
persistent weeds like ground elder and bindweed. It keeps reasonably
well unopened over winter so like fertiliser it is worth buying when the
GC clears all its shelves for Halloween/Winterval rip-off season.
(store cool but frost free)

Regards,
Martin Brown

On 10/10/2011 00:27, Janet Tweedy wrote:
In article , Martin Brown
writes
The agricultural stuff is sold at a higher strength. But if it is
diluted correctly you should see a more or less complete kill in a
fortnight. If it is any faster than that you have overdosed and are
wasting your money.


Oh yes, sorry it did take about 10 days to really go yellow (we were
preparing a section of what had been rough pasture for planting shrubs
etc.) but you did see an effect even on nettles and ivy within about 3 -
4 days

The first signs are on new vigorous growth like tops of nettles. I have
never had that much luck with it on ivy. In fact ivy seedlings have
generally been the only survivors when I have cleared scrubland.

Buttercups also seem more resistant to glyphosate than I would expect.

In my own garden i was trying to get rid of a lot of ivy growing through
from next door through the stock fencing and the hawthorn hedge as it
was getting difficult to see where the blinking Muntjac were getting in
and where any dogs might get out

Our neighbouring field the young stock found a weak point in the fence
and were on the verge of eating my herbaceous border this year. I am
amazed that they will eat through established brambles thorns and all
(actually they seem to leave the woody bits broken on the ground).
Hawthorn, berberis and pyrocantha stand up ok.

Regards,
Martin Brown

On 10/10/2011 09:28 AM, Martin Brown wrote:
The first signs are on new vigorous growth like tops of nettles. I have
never had that much luck with it on ivy. In fact ivy seedlings have
generally been the only survivors when I have cleared scrubland.


Doesn't work for me on ivy either. Nettles seem to need a couple of
rounds.

I never buy Roundup brand, just glyphosate from the ag coop. I know
Roundup has some wetting agents in it, is there anything else of value
besides glyphsate?

The regular stuff works fine for me, even in winter on grass, but it
does take 1-2 weeks to show the full effect.

Buttercups also seem more resistant to glyphosate than I would expect.

I'll agree with that, they're very hard to kill and love acid soil.

-E

Does Roundup work on Japanesse Knot weed?