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Avocado Trees

Q.Can you please identify the disease on this young Hass Avocado tree and suggested treatment methods?

Anonymous added on September 24, 2019 | Answered

As far as I can tell this problem developed very quickly in approximately one week’s time. When I touch the white material on the leaves, it rubs off in powder form. Thanks for any help you can off.
Email knoth@verizon.net