Dioryctria spp.
Pest description and crop damage Small creamy-brown moth larvae bore into stems, especially around wounds.
Management-chemical control
Applications must be made before eggs hatch and larvae tunnel into stem. Using pyrethroid insecticides is associated with subsequent spider mite outbreaks.
- carbaryl (Sevin and others)-(Group 1)
- esfenvalerate (Asana XL and others)-Restricted use pesticide. (Group 3)
- phosmet (Imidan 70W)-(Group 1)
- spinosad (Blackhawk, Conserve, Entrust and others)-Some formulations are OMRI-listed for organic production. (Group 5)