Monday, February 21, 2011

Granulate Ambrosia Beetle Alert

This is the first alert from the Granulate Ambrosia Beetle Monitoring and
Alert program.

Granulate ambrosia beetles were captured in Pitt Co. which is in the
eastern, warmer part of the state zone 8A or 7B. Growers in this area
should begin protecting susceptible trees with preventative applications
of a pyrethroid insecticide.

Growers in colder regions 7B, 6A, and 6B may have weeks before beetles
emerge and do not have to begin preventative applications at this time.
Other alerts will be sent when beetles emerge in these areas.

Recommendations: A landscape borer spray containing a pyrethroid such as
permethrin or bifenthrin can be used and may have to be reapplied every
three weeks while beetles are active.

Astro, Permethrin Pro (permethrins), and Onyx (bifenthrin) are registered
for use on tree trunks in the landscape.

For nursery sites Perm-Up (permethrin) is labeled for field grown nursery
stock. OnyxPro (bifenthrin) is labeled for application to tree trunks in
landscape and nursery sites.

Generic equivalents to the above products are also acceptable.

More details can be found at Granulate Ambrosia Beetle

If you have other questions DO NOT reply to this email. Contact me at


For more information contact your local Cooperative Extension Center and ask for the Commercial Horticulture Agent.