[NAFEX] Plum Curculio Resistant Cultivars
Lon J. Rombough
lonrom at hevanet.com
Wed Nov 14 09:13:27 EST 2007
Beach plums (P. maritima) seem to have a mechanism for resisting PC by
encapsulating the egg in a drop of sap that quickly hardens. I've seen
fruits of this species where most of the fruits had a little drop of
hardened sap on the fruit, but no curculio infestation inside.
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.
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On Nov 14, 2007, at 4:18 AM, Alan Haigh wrote:
One more thing, in my region Japanese plums are much more PC resistant
than the Europeans. I often get useful plums from unsprayed Japanese
varieties in my nursery where the only insecticide I use is for borers
on the trunks of peaches. I'm guessing that the Japanese varieties are
growing so rapidly when PC arrives they crush the worms. Does anyone
out there have a more researched opinion?
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