Lula avocado leaves browning and dropping off (insect pest?)

wardog25August 31, 2013

My lula avocado leaves get brown blotches, then drop off. Underneath the leaves, I can never see live insects, but always find little black dots. MANY of the leaves on the tree look like this. The black dots are not part of the leaf, they are just stuck to it, similar to insect eggs or husks or something like that.

See the picture to see both a browning leaf and the black dots.

Is this an insect causing this? The tree has lost half of its leaves this summer due to this.

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jean001a(Portland OR 7b)

The browning is sun damage.
I can't see sufficient detail to know what the black things are. Perhaps aphids?

    Bookmark   August 31, 2013 at 2:46PM
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I would agree about the browning except for one thing: Everywhere there is browning, there are black things on the undersides of the leaves.

I scraped a lot of the black things off and finally found one that moved. So they are bugs. Anyone know anything about avocado lace bugs?

    Bookmark   September 5, 2013 at 11:25AM
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jean001a(Portland OR 7b)

A search with "avocado lace bug" as the search phrase (but without quotes) turns up info

This from Univ CA

This from UFL

Here is a link that might be useful: avocado lace bug from UFL

    Bookmark   September 6, 2013 at 2:18AM
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