A commercial avocado grove in Escondido, CA was recently found to be infested by Polyphagous shot hole borer/Fusarium dieback. The manner in which the infestation occurred is not certain, but growers are urged to take precautionary steps to avoid further dissemination of this pest/disease 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.