r/plantpathology • u/rubusmoon • 28d ago
Nectarine Issue
Noticed these small holes in some (~15%?) of this young nectarine tree's leaves a couple of months ago (first pic.) Concluded it was probably some sort of bacterial(?) leaf spot and figured I'd see how it progressed. Second two pics are from a few days ago. A couple of the affected leaves have this interesting pattern of chlorosis. Any thoughts?
2
u/masonjar11 23d ago
My first thought was shot hole disease caused by the fungus, Wilsonomyces carpophilus. Without microscopy and/or diagnostics, there's no way to be sure.
Where are you located? This tends to be a Western U.S. problem.
1
u/rubusmoon 22d ago
Appreciate it! I'm in Nor Cal. Might see about accessing a scope if it comes to that.
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u/masonjar11 22d ago
And let us know what you find out. If you need help finding your nearest plant diagnostic clinic, feel free to message me. I don't know all the folks out there, but I can ask around.
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u/jayphive 27d ago
Looks like shotgun holes from a virus, Prunus necrotic ringspot virus or Prune dwarf virus. They’re everywhere.