• Morrison, T.A.
  Department of Entomology, University of Maine at Orono
  
• Dimond, J.B.
  Department of Entomology, University of Maine at Orono
  

The 1910-1919 spruce budworm outbreak caused substantial damage to the fir-spruce resources in Maine (1). Little or no research was done on the budworm during that period. However, the memory of the losses, and the realization that budworm outbreaks were likely to recur, caused research on control to begin a few years later. Research trials were infrequent until the impending 1940ts outbreak, when interest in the new classes of synthetic chemicals, especially DDT, became strong. Control trials were still sporadic in Maine, however, until the most recent resurgence of budworm, which began to affect Maine in 1971 or L972. Since that time, field research trials have been carried out every year and with increased intensity each year.