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ssmith50

identification of black spots on apples

ssmith50
9 years ago

I have a huge harvest of apples from my Jonathan apple tree this year. Not only is there an unbelievable amount, they are huge in size from all the rain we've had this summer. However, as always, the apples, although they have no dimples or insect infestation, are covered with black sooty spots. I have always blamed this on fly ash from the neighboring power plants. My son in law has informed me that he thinks the spots are powdery mildew. My question is how can I tell?? Our ag. extension office is too far away to take them to be analyzed. Is there something I can do to identify these spots? If I wash them and scrub them with an abrasive sponge the marks do come off and the water is grey. I would rather it be a natural cause than pollution!

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