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  • From: Don Yellman <dyellman@earthlink.net>
  • To: nafex@lists.ibiblio.org
  • Subject: [NAFEX] Plum Curculio
  • Date: Sat, 04 May 2002 13:21:09 -0400

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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