North American Fruit Explorers mailing list at ibiblio

[Lee Reich <garden@leereich.com>]

Plum curculio doesn't reproduce in apple because the growing fruit crushes the eggs or larvae. But fruit with eggs laid in them are more likely to drop when young; sometimes they all do.

Lee Reich, PhD

http://leereich.com/

Books by Lee Reich:

The Pruning Book

Weedless Gardening

Uncommon Fruits for Every Garden

A Northeast Gardener's Year

On Jun 4, 2008, at 11:57 PM, Steve wrote:

Speaking of Plum Curculio...

Do Plum Curculios actually manage to reproduce in apples? I know they 

sure do in plums and other stone fruit but I've never found a "worm" in 

an apple even when there is a big curculio scar on the fruit. I do 

usually spray with Imidan, spraying the apples when I do the 2nd spray 

on my plums. Then another spray later. If I didn't spray, would I be 

finding larva in my apples or is the damage only cosmetic? (I'm guessing 

the spray makes no difference in the cases where a curculio manages to 

survive the spray long enough to lay some eggs.)

Steve in the Adirondacks

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