trees that are under water stress.
Watering trees is critical to reducing borer injury.
|The stand of
pine in this photo has been infested by borers after a drought.
critical to controlling stands of pines that are infested with borers. Destruction and removal of trees and stumps
between October and April will kill overwintering stages, and reduce the
population in the area. Follow up with
a spring application of a residual insecticide like Permethrin (Astro or
Eight) to kill stray beetles that may be available to attack trees.
|Photos from left
|Pine die back at
the Indiana Dunes State Park
fungus (Ophiostoma) transmitted by bark beetles on this pine. (Ron Billings- Texas)
|Pine and spruce
engraver beetles (Kieth Douce University of Georgia)