1. UC IPM
Frass on the outer bark of avocado is a symptom of Fusarium dieback caused by several species of fungi spread by the polyphagous shothole borer, <i>Euwallacea</i> sp.
Frass on the outer bark of avocado is a symptom of Fusarium dieback caused by several species of fungi spread by the polyphagous shothole borer, Euwallacea sp.
Credit: Akif Eskalen