Re: Iris Borers
- To: Multiple recipients of list <i*@rt66.com>
- Subject: Re: Iris Borers
- From: D* B* <d*@ptialaska.net>
- Date: Sat, 31 Jan 1998 13:21:38 -0700 (MST)
The borer question has my attention because, although I don't know
of any known sightings in Southeast Alaska, it sounds like our zone
5 to 6 maritime climate is a very likely place for them to show up.
A search on the internet for Cygon and the iris borer gave me the
following page from the University of Nebraska, Cooperative Extension
Service:
http://www.ianr.unl.edu/pubs/Insects/g12.htm
Here is a quote from the page (apparently the borer is safe once it
enters the rhizome):
"Insecticide sprays of dimethoate (Cygon), lindane, malathion, or
chlorprifos (Dursban) can be applied in late April through early
May to kill larvae feeding on the leaves. At least two applications
should be made, two weeks apart, to obtain satisfactory control. Many
larvae can be killed by hand in May and June by squeezing infested
leaves between the thumb and forefinger in the vicinity of the feeding
injury. Destroy heavily infested rhizomes, along with the larvae. Some
borers in the rhizomes can be killed by poking them with a piece of wire."
Hope this helps,
Duane
Duane Buell Zone 6a but plan 5b for safety
http://www.outdoorhq.com
Now featuring a BarnesandNoble bookseller link
dbuell@ptialaska.net or sales.ohq@sport4u.com
