[NAFEX] fw: plum curcurlio and plum gouger on beach plum
Sam.Brungardt at state.mn.us
Mon Feb 13 17:31:10 EST 2006
Thanks for your reply, Richard. I've shared it with the NAFEX listserv.
Are you still working with beach plum research and if so, which
university or experiment station are you doing this work for? -- Sam
From: nafex-bounces at lists.ibiblio.org
[mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of Brungardt, Sam
Sent: Monday, February 13, 2006 4:05 PM
To: North American Fruit Explorers
Subject: [NAFEX] fw: plum curcurlio and plum gouger on beach plum
Here's is Richard Uva's response to my query about curcurlio damage. --
Sam Brungardt, St. Paul, Minn.
From: Richard Uva [mailto:richarduva at gmail.com]
Sent: Friday, February 10, 2006 4:22 PM
To: Sam.Brungardt at state.mn.us; Tom Whitlow
Subject: Re: FW: [NAFEX] Beach Plum
Tom forwarded your question to me. While doing the beach plum work at
Cornell, I noticed three kinds of damage from "snout" beetles:
1) Typical star and crescent type of plum curculio damage. Dave Simser
(of Cape Cod Cooperative Extension) did indeed identify and treat for
plum curculio on our test plots in Falmouth, MA.
2) I observed what looked like you described as a healed over sting. I
thought that it may have been the result of the plant plugging the hole
with the gell-like goup that leaches out of the tip of the fruits or
around wounds. It could have been coincidentally but my recollection of
those fruits was that they were smaller and of lesser quality.
3) The real important pest of beach plum in its native habitat as well
as on farms near the coast is the plum gouger, Anthonomous scutellaris.
It is similar to plum curculio, and makes a hole in the seed/fruit as
seen in the pest gallery of our website
http://www.beachplum.cornell.edu/photogal/pests.html. The adults emerge
from the seed/fruit at the ripe stage and have the potential of ending
up in your jam. They overwinter as adults in leaf littler in the
I recall reading that plum gouger has the ability to affect other plums
as well and I recall that it has been a problem on other small native
plums in the distant past. We hypothesized that since we observed both
beetles active at the same time, growers would probably control plum
gouger when they were treating for curculio. I don't think gouger is on
We tried Surround on some beach plum plants and it apparently had no
negative effects on growth but we never did pest counts.
Please feel free to pass this on to your mailing list and invite others
to visit our beach plum website: http://www.beachplum.cornell.edu/.
On 2/9/06, Tom Whitlow <thw2 at cornell.edu> wrote:
> Rick - Care to comment on this query about beach plum and curculio?
> --- begin forwarded text
> Subject: FW: [NAFEX] Beach Plum
> Date: Thu, 9 Feb 2006 16:16:53 -0600
> Thread-Topic: [NAFEX] Beach Plum
> From: "Brungardt, Sam" <Sam.Brungardt at state.mn.us>
> To: <thw2 at cornell.edu>
> Hello, Dr. Whitlow. We are discussing beach plums on the NAFEX
> Amer. Fruit Explorers) listserv, and many of us have seen your beach
> plum Web site. Would you care to comment on susceptibility of beach
> plums to plum curculio (See message below.)? Thanks. -- Sam
> Brungardt, St. Paul, Minn.
> -----Original Message-----
> From: nafex-bounces at lists.ibiblio.org
> [mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of Lon J. Rombough
> Sent: Wednesday, February 08, 2006 7:10 PM
> To: North American Fruit Explorers
> Subject: Re: [NAFEX] Beach Plum
> One feature of beach plums I've never seen discussed is that they
> appear to be quite resistant to plum curculio. I examined fruit from
> areas where curculio is known to exist and the fruits had one
> interesting feature - most of them had one tiny little drop of
> hardened sap on them. From what could be determined, the species seems
> to be able to react to curculio egg laying by immediately encasing the
> egg in sap, sealing it up and killing it. -Lon Rombough Grapes,
> writing, consulting, my book, The Grape Grower, at
> http://www.bunchgrapes.com Winner of the Garden Writers Association
> "Best Talent in Writing" award for 2003. On Feb 8, 2006, at 11:46 AM,
> Charles Rhora wrote:
> We are in a Zone 4 in Ontario, we have grown the Beach Plum for over
> 35 years now and have made some selections based on taste, size, and
> bearing habits. Most of the small trees produce fruit a little larger
> than the size of a nickel and we just enjoy eating them right from the
> trees. They bear very abundantly year after year. They are excellent
> for making jelly or jam. Over this time period they have
> been bothered with disease or insects.
> They have withstood temperatures to below -35 degrees F.
> Charles Rhora
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