BugwoodWiki Article

spotted wing drosophila
Drosophila suzukii (Matsumura, 1931)

SUMMARY

In summary, SWD is clearly one of the most devastating pests in the history of Georgia blueberry production. It is therefore extremely important for growers to implementing management strategies in a proactive manner in order to minimize the impact of this pest. Following are the key components of effective management of SWD:

  1. Monitor fields with traps and check the traps weekly starting from the fruit-set until the end of harvest.
  2. Make sure to check the trapped flies and correctly identify SWD to determine presence and number of male and female SWD.
  3. Once SWD is detected in the traps while the berries are ripening or ripe, apply effective insecticides registered for blueberries to protect the fruit. For detailed information about insecticides for SWD in blueberries (see Table 1 and Table 2, and also other resources available locally http://www.ent.uga.edu/labels/BlueberryInsecticide.pdf and regionally http://www.smallfruits.org/SmallFruitsRegGuide/Guides/2014/BlueberrySprayGuide11252013.pdf).
  4. Make sure to rotate classes of insecticides to delay the development of insecticide resistance.
  5. Continue monitoring to evaluate your management program, and respond in a timely manner if needed.
  6. If possible, harvest frequently and remove leftover fruit from the orchard to reduce fly feeding and breeding resources.
  7. Keep yourself updated about this pest to informed decisions to manage it. Find the latest information at our UGA Blueberry Blog (http://blog.caes.uga.edu/blueberry/) and sign up to receive updates instantly.
Table 1. Registered Insecticides for Spotted Wing Drosophila Management
Trade NameChemical NameClassApplication Rate (per acre)Pre-Harvest Interval (days)Re-Entry Interval (hours)MRL* U.S.MRL* CanadaSWD Activity
Malathion 8FMalathionOrganophosphates2.5 pint11288E
Imidan 70WPPhosmetOrganophosphates1.33 lb324105E
LannateMethomylCarbamate1 lb34866E
Mustang Max 0.8ECZeta-cypermethrinPyrethroid4 oz1120.80.1aE
Danitol 2.4ECFenpropathrinPyrethroid16 oz32433E
Asana XLEsfenvaleratePyrethroid9.6 oz141210.1aE
Brigade 10WSBBifenthrinPyrethroid16 oz1121.80.1aE
Bifenture 10DFBifenthrinPyrethroid16oz1121.80.1aE
Hero 2.1EC#Bifenthrin + Zeta-cypermethrinPyrethroid6-10.3 oz1121.8, 0.80.1a,0.1aE
Pyganic 1.4ECPyrethrinPyrethrin64 oz0.51211F
Entrust 80WPSpinosadSpinosyn2 oz340.250.5G
Delegate 25WGSpinetoramSpinosyn6 oz340.250.5E
Assail 30SGAcetamipridNeonicotinoid5.3 oz31.61.6G
ExirelCyantraniliproleAnthranilic Diamide13.5-20.5 oz31244E
* The maximum residue limit is provided for U.S. and Canada. Check http://www.mrldatabase.com for MRLs in other countries.
a No MRL set, so default MRL is shown. Check with your marketers on their export policy.
# Hero is a mixture of bifenthrin and zeta-cypermethrin (ingredients in Brigade or Bifenture and Mustang Max). Carefully check the rates used of these products so you do not exceed the total seasonal limit for both active ingredients.
Table 2. Suggested insecticide rotational programs for Spotted Wing Drosophila Management in Georgia Blueberries
Management StrategyWeekly rotations
Export-friendly, maximum modes of actionImidan (phosmet), Malathion 8F, Delegate (spinetoram), and Danitol (fenpropathrin)
Short pre-harvest interval (PHI)Mustang Max (zeta-cypermethrin) and Malathion 8F
Reduced riskDelegate and Exirel (cyantraniliprole)
Organic productionEntrust and Pyganic

Invasive Listing Sources

Taxonomic Rank

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Atelocerata
Class: Hexapoda (including Insecta)
Infraclass: Neoptera
Subclass: Pterygota
Order: Diptera
Suborder: Brachycera
Infraorder: Acalyptratae
Superfamily: Ephydroidea
Family: Drosophilidae
Subfamily: Drosophilinae
Tribe: Drosophilini
Genus: Drosophila