massacnuseiis agricultural uoiiege, 

 AMHERST, MASS. 



massachusetts 

 Agricultural Experiment Station 



BULLETIN No. 213 JANUARY, 1923 



Tobacco Wildfire in 1922 



By P. J. ANDERSON and G. H. CHAPMAN 



Wildfire continues to be the most destructive disease of 

 tobacco in the Connecticut Valley. Experiments for the 

 purpose of perfecting the old methods or finding new methods 

 of checking the disease are in progress. 



Results of the 1922 experiments and observations on con- 

 trol are summarized in this bulletin. The value of steriliza- 

 tion of seed, soil, sash and sideboards, spraying and dusting 

 of plants in the bed and in the field, destruction of diseased 

 areas in the beds, roguing of plants and removal of diseased 

 leaves from the field are discussed and directions given for 

 the application of these measures. This bulletin also dis- 

 cusses the overwintering of the wildfire bacteria and their 

 dissemination during the summer. 



Requests for Bulletins should be addressed to the 



AGRICULTURAL EXPERIMENT STATION 



AMHERST, MASS. 



