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[NAFEX] Plum Curculio



Claude:

I have been fighting plum curculio for many years, and only recently 
appear to be gaining some ground.  They seldom damage more than one 
apple in a cluster now, but that number used to be three or four.

Imidan is the only thing I have found effective against this pest (I 
have not tried Surround).  But I spray immediately after petal fall, and 
on a 6-7 day schedule for the following four weeks.  After that, either 
the skins toughen up or the plum curculio dies out, since I seldom see 
further damage, and discontinue use of Imidan.  The PC also attacks my 
peaches, apricots and pears, both Asian and European, so it goes in my 
cover spray for all those fruits.  In fact, the only thing they don't 
bother is cherries; that job is assigned to the cherry fly.

I am thinning now, and those few fruits showing PC damage are the first 
to come off, along with  scab, if any.  Don't see much scab at all this 
year.  I am using a 70WP formulation of Imidan, and it doesn't take much 
of it in my 4 gal. backpack to do the job.  I have concluded it is 
better to use a more dilute solution and spray more frequently early in 
the season, since the PC seems to be around all the time at some level.

Rgds, Don Yellman, Great Falls, VA

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