Re: Merit/Cygon (was CULT: Anne-Lise)

HI,

Your evaluation seems correct.  The Merit does a reasonable job if applied
before egg hatch and before winter sets in.

I dug a hundred different Rhizomes this year for sale.  I found one Borer
and one Borer shell.  Then I dug a Siberian for a customer who was standing
along side me.  Darn if there wasn't a Borer right there in the shovel full
for him to see!

So does Cygo.  But we can no longer buy Cygon 2E.

Char
----- Original Message ----- 
From: "John Bruce" <jbruce1@cinci.rr.com>
To: <iris@hort.net>
Sent: Tuesday, August 17, 2004 7:53 PM
Subject: Re: [iris] Merit/Cygon (was CULT: Anne-Lise)


> Chris-
>
> I will field a reply to this from the heart of borer country.
>
> Cygon is systemic, absorbed into the plant tissue. It stays there for
about
> two weeks. I assume the plant breaks it down and it needs to be reapplied.
> Merit is longer lasting, but in my opinion is not as effective as Cygon.
We
> have
> tried Merit (imidacloprid) for two seasons. We have applied as directed.
In
> the first year is was not as effective, so we doubled the recommended
dosage
> and still had borers. Since Merit is supposed to last for 6 months, we
> applied
> it well before temps were warm enough to trigger fan growth or borer egg
> hatching. Areas treated with Cygon had far fewer borers than those treated
> with Merit. I still hear much praise for Merit, and it is safer than
Cygon,
> but the
> jury in my court remains in deliberation.
>
> John Bruce
> Hidden Acres Iris Gardens
>
> ----- Original Message ----- 
> From: "Christopher Darlington" <chris.darlington@sympatico.ca>
> To: <iris@hort.net>
> Sent: Tuesday, August 17, 2004 8:38 PM
> Subject: Re: [iris] Merit/Cygon (was CULT: Anne-Lise)
>
>
> > Hi Char,
> >
> > Thanks for the information.  I wonder when Merit will become available
> > up here ?
> >
> > BTW, does anybody know if Cygon 2E works the way Merit does ?  I read
> > that Merit gets absorbed through the plants root system and makes the
> > plant toxic to eat.  Does Cygon 2E work this way as well or is it used
> > to treat the exterior of the fans and ground only ?  I have found that
> > anything that I spray fans with, it never really appears to stick.
> > Should I add soap to the solution ?
> >
> > Chris
> >
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