What plant disease is this

I found this on my mandarin tree. Can someone identify this please. How should it be treated?

Thanks,
Norm

1 Comment (Open | Close)

1 Comment To "What plant disease is this"

#1 Comment By Downtoearthdigs On 12/23/2016 @ 10:02 am

This appears to be a case of Wooly Aphids.

This link will help you.

https://www.gardeningknowhow.com/plant-problems/pests/insects/woolly-aphid-control.htm ^[1]

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