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The Big Picture of Jack Pine Budworm in 1996

Ground surveys of jack pine budworm in northwestern and north central Minnesota during the summer of 1996 and early May of this year, combined with aerial mapping in July of 1996, confirmed that this forest pest was at very low population numbers except in small pocket east of Menahga in Wadena County. Moderate to heavy defoliation by this pest occurred in 1994, followed by less defoliation in 1995. Ground checking after aerial mapping in 1996 improved data collection on budworm populations and it added locations not found by 1996 summer ground checks.