What are these black spots on my bare root pear?

dan8_gw (Northern California Zone 9A)March 19, 2013

I planted this bare root hosui asian pear tree about three months ago. I noticed that their are black spots on that "white part" of every limb and the leaves are black at the edges. I have two other asian pear trees and they do not have these symptoms and are leafing out very nicely. Are those black spots there some type of fungus?

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Did you have a wet year so far?

    Bookmark   March 20, 2013 at 6:54AM
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Noogy(6 sw mi)

pseudomonas? I've gotten some material that, after sitting in cold storage developed these necrotic patches. Which state did it come from, as I don't recall california as having humidity issues. It looks like the lesion extends to the upper bud. Maybe it's just injury from pruning.

    Bookmark   March 20, 2013 at 8:41AM
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Scott F Smith(6B/7A MD)

I see nothing out of the ordinary. I assume you are talking about the pruning cut points. As Noogy states those are just necrotic patches, the wood above the tallest bud is going to die and the process is starting.


    Bookmark   March 20, 2013 at 9:36AM
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