• Kettela, E.G.
  Maritimes Forest Research Centre
  
• Easton, R.W.
  Maritimes Forest Research Centre
  
• Craig, M.B.
  Maritimes Forest Research Centre
  
• van Raalte, G.D.
  Maritimes Forest Research Centre
  

In 1977, aerial spraying operations were carried out in New Brunswick over 4.2 million acres of forest to limit damage caused by spruce budworm. Three insecticides, fenitrothion, aminocarb, and trichlorfon were used. Results of spraying were generally good to excellent in terms of foliage saved and percentage of budworm killed.

Aerial surveys showed that in 1977 the budworm defoliated 1.5 million acres of spruce-fir forest in New Brunswick, 0.3 million acres in Prince Edward Island, and 2.3 million in Nova Scotia. Based on surveys of spruce budworm egg-masses, the forecast is for infestations to increase in area and intensity in New Brunswick in 1978. In Prince Edward Island, populations subsided slightly but moderate to severe infestations are forecast for 1978. In Nova Scotia, infestation have decreased in area and intensity on the mainland but on Cape Breton Island virtually all the fir-spruce forest is severely infested.