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post #1 of 7 Old 09-11-2018, 08:32 PM Thread Starter
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Peach issued

Got some strange stuff going on with this years crop. They have this black tar like spots on all of them. Anyone have any idea??
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post #2 of 7 Old 09-11-2018, 09:35 PM
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Re: Peach issued

I think that's tea staining. The fruit is only good for making peach tea from here on out.

Whatever you do, don't put it in a bag.
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post #3 of 7 Old 09-13-2018, 03:36 PM
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Re: Peach issued

Paul, did a search through Cornell and other ext agencies and there are a number of bacterial problems affecting peaches, especially this year with all the rain. I didn't see any with the black tar like substance but a number of black spot and scab just to mention a couple. I would suggest you make every effort to get that identified by a Cornell agent of maybe even an orchard owner. BTW I'd just show him pictures instead of taking an infected fruit with you just so you can't be blamed for introducing the problem to a commercial orchard. A lot of these can be contained by sprays, but there are also a lot of suggestions (depending what it is) as to pre winter cleanup, pruning etc as most of these diseases can overwinter in fallen leaves from the tree and even fruit that may remain on tree. You really want to get on this or it could kill off your trees. Years ago I tried with a couple of trees but the maintenance and invariable problems getting good looking healthy peaches and plums, had me cutting the trees down for bacteria, fungal and another multitude of problems. Hope you can get a handle on this.

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post #4 of 7 Old 09-13-2018, 04:36 PM
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Re: Peach issued

I agree with Newsman that it could be fungal/bacterial. I lost a lot of my garden to molds/blights/mildews this year due to humidity and dampness.

Have you cut one of these peaches in half through the ooze? I also see online descriptions of Oriental Fruit Moth damage that appear similar to this.

I hope you can get ahead of this!

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post #5 of 7 Old 09-13-2018, 04:48 PM
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Re: Peach issued

Oriental fruit moth?
From search & reading, the larvae burrow into young fruit & causes the sap to come out.
Couple of articles:
Per Penn State article first buds in spring may wilt & die if infected by the larvae. Later they burrow into young fruit & then exit the fruit causing sap to appear. They also say that any infected fruit, pruning should be discarded away from orchard so as to not re-infect next spring. Also, spraying is best control of these pests.

Supposedly the fruit looks good otherwise and can be eaten with bad parts cut away.
Hope you find the culprit whatever it may be. Good luck

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post #6 of 7 Old 09-13-2018, 05:09 PM
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Re: Peach issued

You're just getting peaches now?

My one tree is usually done in August at the latest. Yup, one tree. Trying to get a few more started.
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post #7 of 7 Old 09-13-2018, 10:32 PM
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Re: Peach issued

Around here, a lot of the backyard orchards, the peaches fell of, before getting ripe, from all of the rain. A large commercial orchard has had to cancel 2, pick your own weekends, because of the Honeycrisp apple they have are rotting right on the tree.
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