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nafex - [NAFEX] pears and fireblight

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  • From: Alan Haigh <alandhaigh@gmail.com>
  • To: nafex@lists.ibiblio.org
  • Subject: [NAFEX] pears and fireblight
  • Date: Sat, 4 Jul 2009 14:27:30 -0400

I manage and have managed quite a number of different pear cultivars at various sites in southeastern NY.  The only variety that has had bad enough fire blight to disfigure a tree is Bosc- 2 trees at 2 sites.  At one of those sites I also got some strikes on a red Bartlett and a Seckel but it left Harvest Queen alone.  It also did some minor damage on  Jonagold and Honeycrisp.  Quince seems to have been the big FB sponge that brought the innoculum there.
 
Out of the scores of other pears I manage not a single strike in 20 years.  Even at the other disfigured Bosc site there is another Bosc 20 ft away that never was affected.  I have never used anything to try to control this disease.
 
It's been an extremely wet spring-early summer here, but I've only seen one case of FB- it was some small shoots on a Honeycrisp apple.  There is a Bosc and other pears nearby.  I'm guessing our cooler springs help reduce incidence of FB but the literature for commercial growing is rife with warnings of the danger.  Maybe it is cyclical and a bad outbreak could occur any decade or moment now.


  • [NAFEX] pears and fireblight, Alan Haigh, 07/04/2009

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