Since the discovery of polyphagous shot hole borer (PSHB) in commercial avocado groves in San Diego County, Commission staff have been working with researchers and impacted industry members to communicate critical information to limit the spread of the pest complex. While efforts to identify possible chemical control materials continue, grove sanitation measures constitute the primary activity growers can undertake to further limit the spread of the beetle/fungus complex.
As growers and pest control advisors plan their arthropod pest management program for 2014, they should consider the consequences of pesticide resistance that would make pest management problematic in the future.
Because of the warm and dry winter, persea mite and thrips populations may be increasing in some areas, so California avocado growers should be vigilant and monitor pest populations earlier than normal.
View three presentations concerning threats posed to California avocado groves by new pests and diseases, including laurel wilt disease, fusarium dieback disease, the polyphagous shot hole borer and the Florida redbay ambrosia beetle.