Cross-section of an avocado branch showing internal symptoms of fusarium dieback caused by several species of fungi spread by the polyphagous shothole borer, Euwallacea sp.

Cross-section of branch showing internal symptom of fusarium dieback on avocado. Credit: Akif Eskalen
Cross-section of an avocado branch showing internal symptoms of fusarium dieback caused by several species of fungi spread by the polyphagous shothole borer, Euwallacea sp. Credit: Akif Eskalen