• Entomology Division
  Maine Forest Service
  
• Bureau of Entomology and Plant Quarantine
  U.S.D.A.
  

Coordinated surveys to determine the distribution and abundance of the spruce budworm in Maine in 1952 were conducted jointly by the Maine Forest Service and the New Haven station of the Division of Forest Insect Investigations. Research studies of the natural control factors affecting the status of budworm populations were continued from the field laboratory at Fort Kent. Rearing of the specific parasite, Phytodietus funiferanae Rohw., was continued at the Maine Forest Service entomological laboratory at Augusta and three small colonies were released in northern Maine. A deposit-mortality study, carried out in conjunction with the airplane spraying of approximately 190,000 acres in New Brunswick, provided considerable practical as well as  research information on the conduct and efficiency of commercial large-scale operations for budworm control.