The White Pine Blister Rust. 235 



When plants are to be burned it should be done where they are 

 found or at a place to which the plants can be carried in bags made 

 of closely woven heavy cloth, such as canvas or factory, and all 

 such bags should be thoroughly boiled or sterilized at the conclu- 

 sion of each job. 



5. Suspicious plantings are to be thoroughly inspected during 

 the last two weeks in May and the first week in June (between 

 May 10th and June 10th probably best time). This will be very 

 important in 1910 and should be repeated in 191 1, the thorough- 

 ness in that year depending largely upon 1910 findings. 



Eighty-four different shipments of German stock have been 

 located in New York State since the conference, and in every case 

 where any stock more than two years old was thought to exist the 

 plantation was visited either by the State Department of Agricul- 

 ture or the Forest, Fish and Game Commission and the Ribes de- 

 stroyed before July 20. All those places where two-year old seed- 

 lings are known to have been shipped will be visited this fall and 

 the Ribes eradicated. Through the cooperation of the two above 

 State Departments very effective work has been accomplished in 

 New York State, and the method outlined above has proved very 

 practical. 



This disease has been the subject of much investigation and 

 writing abroad, but probably Klebahn is the most authoritative 

 and Die Wirtwechselnden Rostpilze his best work. Horticultural 

 Bulletin No. 2 "Emergency Bulletin on the Blister Rust of Pine 

 and the European Currant Rust," prepared by Mr. George G. 

 Atwood, has been issued by the State Department of Agriculture, 

 Albany, N. Y. Circular No. 38 of the Bureau of Plant Industry, 

 Washington, D. C. "The European Currant Rust on White 

 Pine in America" by Dr. Perley Spaulding has also been published 

 since this disease was discovered in this country. 



It is certainly fortunate that such a timely discovery was made 

 and that some opportunity was given to eradicate the disease. 

 Nearly all of our northeastern states are planting public lands 

 or assisting private land owners in their reforesting work. The 

 discovery of this disease may check the progress somewhat, but if 

 the work is delayed until our American grown stock can supply 

 the necessary planting material the future of White Pine planting 

 will not be in doubt. 



