Figure 11. — Dwarfmistletoe probably has been present in the timber of the 

 North Slope for centuries. However, partially cutting the lodgepole pine stands 

 lets more light into the stand canopy and encourages the parasite to spread. 

 Young trees established under infected old trees, as shown here, are generally 

 loaded with dwarfmistletoe. 



Undoubtedly, the greatest single requirement for growing these potential volumes is 

 to control stocking, especially in lodgepole pine stands. Loss of growth caused by over- 

 crowding is virtually certain in lodgepole pine stands unless they are thirmed at the proper 

 time. Another important requirement, of course, is to prevent mistletoe from infecting fu- 

 ture stands (fig. 12). 



13 



