hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
 Navigation
Articles
Gallery of Plants
Blog
Tech Blog
Plant Profiles
Patents
Mailing Lists
    FAQ
    Netiquette
    Search ALL lists
    Search help
    Subscription info
Top Stories
Links
sHORTurl service
Tom Clothier's Archive
 Top Stories
Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

CULT - Iris borer


I have jsut had a discussion with Dr. Lafontaine, the Canadian
Government expert on the Nocturidae, the group of moths that include the
iris borer.  We discussed control and the fact that most of us would
prefer not to use Cygon if at all possible.  He said that the moth can
not be controlled by pheromones used as attractants because tests on
Gipsy moths have shown that the elimination of 90% of the males still
resulted in all the females being fertilized.  In other words, they are
sex maniacs!

He also said that, despite statements to the contrary, iris borers are
attacted to light although not very strongly.  This means that light
traps might reduce the population in the vicinity of beds sufficient to
reduce the damage significantly.

In his view, fly or hymemopterous parasites would be the best approach
to find a biologically safe control method.  I did not speak to the
Tachinid or Ichneumonid specialists about this but I know they have
databases which list the parasites for most hosts.

His most interesting comment came at the end when he said that the iris
borer has been recorded recently from a garden in Vancouverm British
Columbia.  In other words, it has been transported to Western North
America.  This means that the commerical growers in the
Washington/Oregon area should be on the watch for an invasion.

I would suggest that the AIS research budget should finance a graduate
student for the summer to work with someone like Dr Lafontaine on
potential control over the borer.  This could involve a detailed review
of the literature followed by experiments on control using parasites and
light traps.  He estimates that the cost would be about $6000 in our
dollars, which is about $4500US.  One advantage of working in the
Agriculture Canada laboratories on a subject like that is that there are
about 50-100 scientists in the same group working on the same type of
subject who are always willing to provide help and advice.  Is there
anyone on the list who is connected to the AIS research committee?


Ian in Ottawa





 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index