Beetle-fungus disease threatens crops and landscape trees in Southern California

A plant pathologist has identified a fungus that has been linked to the branch dieback and general decline of several backyard avocado and landscape trees in residential neighborhoods of Los Angeles County. The fungus, which caused avocado dieback in Israel, is a new species of Fusarium and is transmitted by the Tea Shot Hole Borer, a beetle no larger than a sesame seed.

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