North American Fruit Explorers mailing list at ibiblio

["Dennis Norton" <dmnorton@royaloakfarmorchard.com>]

Shirley,

 

If the gum is on the peaches and forms spots, the peaches have bacterial spot, as in the photos at the following link:   http://www.caf.wvu.edu/kearneysville/disease_descriptions/ombactsp.html Bacterial spot is different from gummosis. 

 

 The only spray for bacterial spot is Mycoshield.  Mycoshield should be used after a Champ (copper) or Kocide spray.  Apply the copper at dormancy or prior to 1/2 " green and the Mycoshield at peach shuck split.  If you do not spray, the disease will be worse the following season.  After the original Mycoshield spray you can follow-up the next season with wettable sulfur 95% instead of  Mycoshield and then rotate each successive season.  The sulfur you already sprayed may not have been a sufficient  rate to stop it.  If you need more information, you can contact me at my e-mail address. 

  

Dennis Norton
Royal Oak Farm Orchard
http://www.royaloakfarmorchard.com
http://www.theorchardkeeper.blogspot.com

----- Original Message -----

From: Shirley Murphy

To: nafex

Sent: Thursday, April 27, 2006 9:04 AM

Subject: [NAFEX] Gummosis? on peaches

A clear gelatinous substance is on my peaches which are now about 3/4 inch.  I believe that it is gummosis and has also been observed on the trunks.   The trees have been sprayed twice this year with Surround, sulfur and Serenade.  Should this help control gummosis?  Will the peaches already affected still be salvageable or should they be removed?

Any suggestions for organic control of this and any other typical problems of growing peaches in the Southeast would be appreciated.

 

Shirley Murphy

zone 7