the: white-pine buster rust situation 80 



experimental basis, particularly with a view to determine as soon as 

 possible the financial factors involved in the control work. 



In conclusion, we must reflect that the fundamental error was made 

 when European nursery stock of white pine was imported to this coun- 

 try and its extensive importation encouraged. Our problem in this, as 

 in the case of the many other diseases and pests from foreign countries 

 that have been allowed to establish themselves, is to make the best of a 

 very bad situation. The white-pine blister rust has invaded the country 

 and dug itself in. It will never be driven out. Our task is to limit its 

 further spread so far as possible and control it locally in whatever way 

 is most consistent with sound forest economics. In the meantime we 

 should not be unmindful of the fact that ornamental and forest tree 

 nursery stock of other species is still being imported and distributed 

 promiscuously, and the door is wide open for the establishment of other 

 pests and diseases, which may be quite as serious as the chestnut blight 

 or the white-pine blister rust. 



