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nafex - Re: [NAFEX] Pear leaf disease

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  • From: Nicko Rubin <narubin@gmail.com>
  • To: North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Pear leaf disease
  • Date: Sun, 16 May 2010 11:57:48 -0400

Yes, this pear leaf blister mites looks like it. 
I will try out the insecticidal soap and try a dormant oil next spring, trees have only been in a year so it may slow them down severely.
Thank you!
-Nicko

3496 East Hill Rd
Plainfield, VT 05667
802-272-5880


On Sat, May 15, 2010 at 9:24 AM, Bob Hartman <hartmansfruit@msn.com> wrote:
Here is a website to look at http://www.agf.gov.bc.ca/cropprot/tfipm/mites.htm#rust.  Scroll down to the rust mites and that is what I am more familiar with.  You can look at the other descriptions on the web page.  Also you can use Google or another search engine and put in "spider mites pear" without the quote marks and see some other sites that may have what you are looking for.
 
Ordinarily I would suggest that you put on the dormant spray which would usually take care of the problem.  It is too late now to put on the dormant spray.  You would burn the fruit buds.
 
Go to http://pep.wsu.edu/hortsense/  Click on Tree Fruits.  Then click on Pear.  Then click on Spider Mites.  This is what WSU recommends.  They are suggesting insecticidal soaps at this point.  Also I have read that if it is too late for the dormant spray then it is best to fertilize well to give them an extra boost.  (Make them healthy.)
Let me know if this fits what you have.
 
Thanks,
Bob Hartman
Western Washington

Sent: Saturday, May 15, 2010 3:41 AM
Subject: [NAFEX] Pear leaf disease

Hello,
I have something affecting my luscious and summercrisp pears. The leaves and bits of new growth develop red spots (like a rash) and curl upward. The edges of the leaves also go black, like leaf scab. It seems to be somewhat severe. Any ideas what the causes might be? Any recommendations for treatment?
Thank you!

Nicko Rubin
Zone 4 VT 

3496 East Hill Rd
Plainfield, VT 05667
802-272-5880


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