trees would fully stock more than 100 acres of forest land, 



During the fall of 1 968 foresters in western Montana 

 prepared salvage sales covering thousands of acres of 

 spruce stands attacked by spruce bark beetles. Literally, 

 millions of spruce trees were killed in this bark beetle 

 epidemic . Foresters hope that the immediate sale of this 

 dead timber will enable its being manufactured into 

 useful products. Actually much of the beetle -killed 

 timber will be rendered useless by natural forces before 

 needed roads can be constructed and logging completed. 



Losses from insects, diseases and other pests 

 require annual volumes of timber to be harvested on a 

 sustained basis to be changed. The true impact of an 

 epidemic lasts for many years. 



Annual detection surveys which assess forest insect 

 and disease damage accurately are an aid to the control of 

 forest pests. Leadership and cooperation for such surveys 

 is furnished by public agencies and forest landowners 

 cooperatively through Forest Pest Action Councils. 



Such surveys indicate the action needed to keep 

 forest pest damage within practical, economic limits. 

 Special emphasis should be placed upon prompt detection 

 of epidemic conditions and evaluation of potential damage 



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