North American Fruit Explorers mailing list at ibiblio

["Lon J. Rombough" <lonrom@hevanet.com>]

There is virus in Rubus that is spread in the pollen, which will cause decline and weakening of bushes.  In this area one way to avoid it in raspberries is to plant fall bearing types and mow them off in the spring.  That way, they bloom after the wild Rubus has finished and there's no pollen transfer and virus spread from the wild to the cultivated plants.  In some varieties/species there is a hypersensitive reaction that makes the shoot die to stop the virus from getting into the rest of the plant.
What you describe sounds similar to what happens on infected plants here.  
-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. 
For even more grape lessons, go to  http://www.grapeschool.com
For all other things grape,   http://www.vitisearch.com
A video about The Grape Grower : http://cookingupastory.com/index.php/2008/04/18/the-grape-grower/
On Jun 13, 2008, at 4:26 PM, ROBERT W JUDY A HARTMAN wrote:

<x-tad-bigger>Are the raspberries planted in a wet area?  It sounds a lot like root rot that most raspberries are subject to.  Many people build a raised bed area to plant their raspberries in our area.  We've had to do that too.  If it is not a wet area then I am not familiar with it.</x-tad-bigger>
<x-tad-bigger> </x-tad-bigger>
<x-tad-bigger>Bob</x-tad-bigger>
<x-tad-bigger>Western Washington</x-tad-bigger>
> <x-tad-bigger>----- Original Message -----</x-tad-bigger>
> <x-tad-bigger>From:</x-tad-bigger><x-tad-bigger> </x-tad-bigger><x-tad-bigger>Robert C. Mullins</x-tad-bigger><x-tad-bigger> </x-tad-bigger>
> <x-tad-bigger>To:</x-tad-bigger><x-tad-bigger> </x-tad-bigger><x-tad-bigger>North American Fruit Explorers</x-tad-bigger><x-tad-bigger> </x-tad-bigger>
> <x-tad-bigger>Sent:</x-tad-bigger><x-tad-bigger> Friday, June 13, 2008 3:17 PM</x-tad-bigger>
> <x-tad-bigger>Subject:</x-tad-bigger><x-tad-bigger> [NAFEX] Rasberries</x-tad-bigger>
>
> <x-tad-bigger>I have a strange situation.  I planted a red rasberry last year and it </x-tad-bigger>
> <x-tad-bigger>seems fine.  This year it put on flowers and started to 'berry-up' but </x-tad-bigger>
> <x-tad-bigger>then one day I went out to check on it, and noticed that the entire </x-tad-bigger>
> <x-tad-bigger>flower stem were dead, dead, dead.  The plant is perfectly fine and is </x-tad-bigger>
> <x-tad-bigger>putting on next years shoots, but everything on the flower/berry ends died.</x-tad-bigger>
>
> <x-tad-bigger>I thought this was an isolated instance.  However I was out gathering</x-tad-bigger>
> <x-tad-bigger>wild blackberries and notice I have one or two patches out there in the </x-tad-bigger>
> <x-tad-bigger>field with the same exact symptoms.  Anybody have any clues about this?  </x-tad-bigger>
> <x-tad-bigger>I was thinking maybe rain/water stress?  Whatever it is it affects Rubus </x-tad-bigger>
> <x-tad-bigger>for sure.</x-tad-bigger>
>
>
> <x-tad-bigger>-- </x-tad-bigger>
> <x-tad-bigger>Robert C. Mullins M.S. IT</x-tad-bigger>
> <x-tad-bigger>GaelicMysts, Owner</x-tad-bigger>
> <x-tad-bigger>Clarksville, Ar</x-tad-bigger>
> <x-tad-bigger>Zone 8a</x-tad-bigger>
> <x-tad-bigger>http://wildcraft.gaelicmysts.com</x-tad-bigger>
>
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