[NAFEX] Sudden Apricot Death Syndrome?

Ginda Fisher list at ginda.us
Wed Sep 2 00:50:18 EDT 2009


Thanks.  We had an extraordinarily cool wet spring, so I might gamble  
on the same cultivar (Puget Gold).  It had the virtue of setting fruit  
in New England, which I gather most apricots don't.  What would you  
spray with, and when, to protect against gummosis?

Ginda

On Sep 2, 2009, at 12:36 AM, Lon J. Rombough wrote:

> If you peeled the bark off near that gummy spot, you'd likely find  
> the cambium dead all the way   around the trunk.  That kind of  
> gummosis is common in the NW.  It grows during the cool, wet weather  
> of spring, then dries up in the summer.  If can girdle limbs and  
> trunks 3 inches or so in  diameter or less, and makes oozing cankers  
> on larger diameter wood of susceptible trees.  The old treatment was  
> to cut out the canker and paint the wound.
> 	The disease is most common on apricots, peaches, European plums,  
> and some American and hybrids.  Also on Prunus tomentosa (bush  
> cherry) and P. besseyi, the Sand Cherry of the plains.
> 	You can replant in the same hole.  The disease is spread through  
> the air. Serious spraying and resistant varieties are your best bets.
> -Lon Rombough
> NEW grape pruning video: http://www.bunchgrapes.com/dvd.html View a  
> short, low resolution clip here: http://www.youtube.com/watch?v=8Q58zFY0B1M
> Grapes, writing, consulting, my book, The Grape Grower, at http://www.bunchgrapes.com 
>   Winner of the Garden Writers Association "Best Talent in Writing"  
> award for 2003.
> A video about The Grape Grower : http://cookingupastory.com/index.php/2008/04/18/the-grape-grower/
> On Sep 1, 2009, at 9:21 PM, Ginda Fisher wrote:
>
> I planted an apricot tree a few years ago.  It's looked healthy until
> a couple of weeks ago, when quite suddenly the leaves all wilted and
> turned brown.  It is now covered with dead leaves.  (Not dropping
> yellow leaves, as the healthy tree did in the fall.)  Any ideas what
> happened to it?
>
> I saw a little bit of gum on the bark, but nothing that looked
> terrible.  I did not see any other damage. We had a very cool wet
> summer until shortly before it died, when suddenly the weather turned
> hot and dry.  But the apricot started to look dead before the
> raspberries looked even a little wilted.  (They are within a few feet
> of each other, on similar soil.)  It had a decent crop this year, but
> I thinned it pretty heavily, and I don't think the crop should have
> stressed the tree.
>
> I suppose I'll leave it in the ground until next spring - weirder
> miracles have happened than it coming back into leaf.  But it
> certainly looks dead.  I'm debating buying another and replanting in
> the same spot.  Any reason not to?
>
> Thanks.
> Ginda
> eastern MA, zone 6
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