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godsotherson

Asian pear powdery mildew

godsotherson
9 years ago

Top shoots of non-fruit bearing branches are covered in white powdery mat over the normally colored bark, leaves curl upward with no other defect visible. Can scratch off the white easily [see in image a small area scratched. image is tip of shoot cut off. Most affected shoots are the tallest ones, no powder seen on lower fruiting areas yet]
2nd tree, different variety has powder but drops leaves instead of curling.
Cures and prevention please.
Thanks