The spotted-wing drosophila (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is an invasive and economically important pest of many soft-skinned fruits such as blueberries, blackberries, raspberries, strawberries, cherries, and other. Since its first detection in California in 2008, SWD spread rapidly across the United States. It was first found in Georgia in 2010 and since then this small vinegar fly has impacted the $255 million Georgia blueberry industry with crop losses of up to 20% annually. Detailed information on identification, monitoring, and management of SWD is included in this article.
Recent warmer, damp weather has led blueberry growers in the southern region of Georgia to initiate sprays for mummy berry disease. According to the mummy berry model developed by Dr. Harald Scherm (UGA), there is a HIGH RISK for mummy berry disease initiation in southern Georgia as of February 17th, 2020. Growers…
March 4, 2020 (Wednesday) at 2:00-3:30pm Eastern
Organic Management of Spotted-Wing Drosophila
Spotted-wing drosophila (SWD) has emerged as a devastating pest of small and stone fruits worldwide. Losses due to SWD can be as high as 100% and have been valued more than $718 million annually in the U.S. The zero tolerance for SWD in fresh fruit has led conventional growers to make preventative insecticide applications when fruit are ripe. Organic management of SWD is even more challenging due to the low number of effective OMRI-approved materials and limited understanding on the biology of SWD to translate into non-chemical management tactics. Our multi-regional team was funded by USDA-NIFA through OREI Award No. 2018-51300-28434 to develop, evaluate and implement systems-based organic management programs for SWD. This webinar will provide a comprehensive update on organic management of spotted-wing drosophila. It will summarize findings of the research conducted by our project team on organically approved strategies including behavioral, cultural, biological, and chemical tactics to manage SWD. To attend this webinar, Please register at: https://eorganic.org/node/33992
Following recent freezes in the Georgia blueberry production region, the threat exists for subsequent damage from fungal pathogens. On tissues already damaged by freezes, two fungal pathogens of particular concern are Botrytis and Botryosphaeria. In addition, root zone saturation from overhead freeze protection/subsequent rainfall can lead to issues with Phytophthora…