RE: systemics
- Subject: RE: [sibrob] systemics
- From: B* H* <c*@cablespeed.com>
- Date: Fri, 18 Jun 2004 23:50:05 -0400
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]
>
>
>
>
>http://groups.yahoo.com/group/sibrob/
>
>Subscribe: sibrob-subscribe@yahoogroups.com
>
>Post message: sibrob@yahoogroups.com
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
>
>http://groups.yahoo.com/group/sibrob/
>
>Subscribe: sibrob-subscribe@yahoogroups.com
>
>Post message: sibrob@yahoogroups.com
>
>
>
>Yahoo! Groups Links
>
>
>
>
------------------------ Yahoo! Groups Sponsor --------------------~-->
Yahoo! Domains - Claim yours for only $14.70
http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/2gGylB/TM
--------------------------------------------------------------------~->
http://groups.yahoo.com/group/sibrob/
Subscribe: sibrob-subscribe@yahoogroups.com
Post message: sibrob@yahoogroups.com
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/sibrob/
<*> To unsubscribe from this group, send an email to:
sibrob-unsubscribe@yahoogroups.com
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
