Canadian Forest Service Publications
MacQuarrie, C. 2013. Predicting jack pine budworm defoliation. Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, Sault Ste. Marie, Ontario. Frontline Express 86. 2 p.
Issued by: Great Lakes Forestry Centre
Catalog ID: 40182
Availability: PDF (download)
Plain Language Summary
The jack pine budworm is the most damaging pest of jack pine in eastern Canada, but especially so in the provinces of Ontario, Manitoba and Saskatchewan. Outbreaks of this budworm occur approximately every 10 years but high defoliation levels occur for 3-4 years during the outbreak. This document describes the life cycle, appearance, damage and control measures available for managing jack pine budworm outbreaks.