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Peach leaf curl #870598

Asked May 29, 2024, 1:33 PM EDT

I sprayed peach tree with lime sulfer in dormancy, then two times with Daconal 1 week apart at first green leaf budding. I was told that I should have done the Daconal 3 times instead of 2, but I cant see where that would have made a difference. It's the worse leaf curl I've ever seen and I'm fearing i may lose the tree as its 18' tall. I sprayed my sugar beets last fall with that same Daconal when I first saw signs of leaf spots and it never stopped any of it. After numerous sprays I gave up and the leafs dried up. Should I be going to a different fungicide as maybe there is a resistance going on? Any suggestions. I was diligent and did lots of work for nothing.

Saginaw County Michigan

Expert Response

Kevin,

Yes, this is probably the worst year for peach leaf curl in a very long time.  When weather favors the pathogen so much and the tree is susceptible, fungicides may not provide the control you are hoping for.  I agree with you that I don't really think an extra spray would have made much of a difference.

For the sugar beets, this would be a different disease that may or my not be affected by daconil.  You'd have to make sure that you get a diagnosis of the disease and can then work on management options.


George Sundin

An Ask Extension Expert Replied June 10, 2024, 1:25 PM EDT
George, 

  So can you give me any help on what to do with my peach leaf curl to help the rest of the summer and a plan for next Spring ? So tired of not getting a peach crop. 

Also, what should I be using for leaf spot in my sugar beets ? Here’s a pic last year I hope to not repeat using Dacanol. 

image
 
What is this disease and what and when can I use so it don’t reoccur this year ? Thanks, 

Kevin


Sent from my iPhone

On Jun 10, 2024, at 1:25 PM, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied June 10, 2024, 2:01 PM EDT
Here's Dr. Sundin's contact information --you can reach out to him directly.

https://www.canr.msu.edu/people/george_w_sundin

Thanks,
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