• Bean, James L.
  Maine Forest Service
  

During the month of September a series of 25 permanent study plots were established over northern and northwestern Maine for use in the study of the Spruce Budworm. In general these plots were established in areas where the budworm has been recovered during the last four years. In some cases due to the lack of the desired forest type in the vicinity of past budworm recoveries plots were established in an adjacent area. The number of plots in each area ranges from three to five and covers, the following forest types: old balsam (50 years or older); young balsam; balsam mixed with other softwoods (spruce, pine, cedar and hemlock); balsam overtopping hardwoods (yellow and white birch, maple and poplar); and in two of the plots a forest type of young pasture white spruce was selected.