270 STATE feOARD OF AGRICULTURE. 



night with tops that have been blighted as this would only result in ad- 

 ditional infection with blight spores. 



FURTHER EXPERIMENTATION. 



It is the purpose of this Department to carry on the spraying ex- 

 periments with late blight for at least five years. In order that the 

 most reliable results may be obtained, and that the results may be 

 spread broadcast among the potato growers of the State, it is desired 

 that a large number of growers co-operate with the Department in this 

 work. It is especially desired that every potato grower who sprays re- 

 port his results to this Department. A certain number of experiments 

 under the direction of the Station have been arranged for the coming 

 season and a few more are desired. Any potato grower who wishes to 

 enter into co operation in this work may obtain explicit directions for 

 carrying on an experiment by addressing the author. An endeavor will 

 be made during the coming season to have a representative of the Sta- 

 tion visit a number of these co-operative experiments. 



Agricultural College, Mich., March 7, 190G. 



