It is Time to Sample for Prionus Beetles in Blueberries!
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Collapse ▲This week, adults were observed emerging from cocoons made of soil particles nearby the blueberry plants in five of the monitored locations, in Pender and Sampson Counties (Fig. 3). Since the set up of the traps in the first week of April, we recorded the first emergence of Prionus beetle adults from blueberry fields in 2025 in five of six locations (no adults collected at the Research Station in Castle Hayne yet). Lured traps have collected 46 adult beetles from all locations since April 22. These upcoming weeks and increase on Prionus adult emergence is expected throughout summer. It was registered that after a few days with soil temperature above 70 ºF, adult emergence started. Check the complete report at: 2025 Prionus Beetle Monitoring Program in Blueberries
CALL TO THE BLUEBERRY COMMUNITY:
Developing effective management of Prionus species in blueberries requires a comprehensive understanding of their biology, regular monitoring, and integrated tactics. Thus, community-wide coordination is crucial for effectively diagnosing infestations and collecting information about this pest.
It is a good time to sample for Prionus beetles in blueberries! We encourage blueberry growers to inspect their blueberry fields for any signs of adult beetles emerging from the ground. These beetles usually emerge very close to the based of the blueberry plants. If you see these beetles on or near your blueberries, please contact the small fruit entomologist, Lorena Lopez, at llopezq@ncsu.edu to schedule a farm visit or talk details on how to sample blueberry roots to confirm or discard possible a Prionus infestation.
BEWARE the presence of adult Prionus beetles in blueberry fields alone, doesn’t necessarily mean the blueberry field is infested. Only blueberry roots with feeding larvae are an indication of blueberry infestation.