and how do I get rid of them? These is actually 2 questions:

1. My Fuyu persimmon has these black spots on the leaves, along the edges. My tree is still too young to fruit, but I still want to take care of it. What are the spots on the leaves and how would I treat them?

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2. My Saturn peach & Desert Delight nectarine have white, powdery-looking stuff on some branches. The nectarine is barely starting to leaf out, but the peach has some leaves and fruit on it. Very young fruit. How would I handle treating its symptoms

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Thanks for your help!