Re: systemics
- Subject: Re: [sibrob] systemics
- From: &* H* <c*@wi.rr.com>
- Date: Sat, 19 Jun 2004 00:35:38 -0500
Hi Bob,
Very interesting.
I was visiting with Dorothy and Tony Willott over last weekend. I expressed
a consideration that I don't think the 2 Tablespoons per 10 sq feet, of
White Grub Control was sufficient to completely control the Borer and Tony
said probably not. His consideration was that the liquid requires a higher
concentration. I have cut down considerable on the infestation. I will
increase this in my fall application and see how it goes.
I had far more problem with a green (iridescent) Caterpillar with a light
stripe running down the side from the eye. It was eating buds. They showed
up right at the time the city sprayed for gypsy moths. Are they the
Caterpillar for the Gypsy. Do you know? I found many many moth webs on my
Iris markers last year when I put out brand new markers. Part of my fall
clean up this year will be to wash all the markers with bleach water.
Thanks, Char, New Berlin WI
----- Original Message -----
From: "Bob Hollingworth" <cyberiris@cablespeed.com>
To: <sibrob@yahoogroups.com>
Sent: Friday, June 18, 2004 10:50 PM
Subject: RE: [sibrob] systemics
> Generally systemic insecticides are considered to be reasonably safe to
> pollinators since they don't get excessive exposure via the pollen or
> nectar, but Merit may be a bit different. The active ingredient
> (imidacloprid) has two actions. One, at higher doses, is lethal to
insects.
> At lower doses it can affect behavior without directly killing the insect,
> such as stopping aphids from feeding. It is the behavioral effects that
are
> of concern regarding bees since it is claimed that imidacloprid can
disrupt
> foraging activities.-- in fact some of it's uses were banned in France
> because of complaints from beekeepers. Bayer (who make it) deny these
> claims based on what seems like good research, and there haven't been many
> complaints about its impact on bees in the US as far as I know. This is
all
> complicated by the fact that bee populations in the US have been decimated
> by Varroa mites, and if colonies do decline, it could well be mites that
> are causing it. So, as usual, the situation is murky, and it depends who
> you believe. There are some interesting websites on this if anyone is
> interested in digging deeper. I have a couple of research projects at the
> moment on this compound and its effects on insects, so the area is of some
> interest to me and all of this may be more than you wanted to know!. Bob
> Hollingworth.
>
> At 11:11 AM 6/18/2004, you wrote:
>
> >The question of systemics and pollen is whether the pesticide
translocates
> >to the pollen and if the beneficial pollen eaters are then effected.
> >
> >Harold Peters
> >Beautiful View Iris Garden
> >2048 Hickok Road
> >El Dorado Hills, CA 95762
> >harold@directcon.net <h*@directcon.net>
> >www.beautiful-view-iris.com
> >
> >
> >-----Original Message-----
> >From: Debora Totoonchie [T*@jps.net]
> >Sent: Friday, June 18, 2004 6:44 AM
> >To: sibrob@yahoogroups.com
> >Subject: [sibrob] systemics
> >
> >
> >HI Margaret,
> >
> >It is my understanding that systemic only affect chewing insects as they
> >have to ingest it. The flyers and pollinators are safe.
> >
> >I am receiving this information from the manufacturers at Monterey who
make
> >products for EB stone, Master Nursery as well as their own label.
> >
> >If anyone knows different please let me know so I am giving the correct
info
> >to my customers.
> >
> >Debby Totoonchie, zone 7 Sierra Foothills CA.
> >
> >" Anyone can hold the helm when the sea is calm"
> >
> >[Non-text portions of this message have been removed]
> >
> >
> >
> >
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