Best Management Practices for Christmas Tree Export

Identify and Manage Pests

Arion rufus. (Photo courtesy of Oregon Department of Agriculture.)
This week:
  • Eggs will hatch in favorable conditions.

  • Adults and juveniles are active.

  • Adults and juveniles are present, but not active.

  • Apply slug bait.

  • Scout weedy areas.

Learn more about Slugs
Más información sobre Slugs

(Photo courtesy of Oregon Department of Agriculture.)
This week:
  • Apply spray control measures based on monitoring.

  • Look for adults.

  • Look for eggs.

  • Look for larvae in needles.

  • Look for symptoms: swollen and yellow needles present.

Learn more about Douglas-fir Needle Midges
Más información sobre Douglas-fir Needle Midges

Vespula alascensis (vulgaris) worker. (Photo courtesy of Oregon Department of Agriculture.)
This week:
  • Look for eggs.

  • Look for queens.

  • Scout fields for presence of workers and nests.

  • Trap queens in May; trap workers and treat nests June to September.

Learn more about Yellowjackets
Más información sobre Yellowjackets

Photo of root weevil
This week:
  • Apply biocontrol.

  • Look for adults

  • Look for larvae.

  • Look for pupae.

  • Look for symptoms: notched needles present.

  • Monitor for adults with traps/boards or by scouting at night.

  • Monitor for larvae by digging.

Learn more about Root Weevils
Más información sobre Root Weevils

Cylindrocopturus furnissi. (Photo courtesy of Oregon Department of Agriculture.)
This week:
  • Look for adults.

  • Look for larvae.

  • Look for pupae.

  • Look for symptoms: dead branches present.

Learn more about Douglas-fir Twig Weevils
Más información sobre Douglas-fir Twig Weevils