Trees, Shrubs and Conifers: Good gracious! Who kills waxleaf ligustrum??????, 1 by vossner

vossner wrote:
I've had these for several years, and in the last 3-4 days one of them has defoliated severely and leaves that are left are brown. I suspect a soil borne fungal infection. Just like that, wham!

any comments from the tree experts will be appreciated.

I haven't done anything different to them. Can I use Daconil or should I cut it off before it infects the other two lig. that are planted nearby?

here is a pic of the leaves