328 Maine; agricultural, e;xpe:rime;nt station. 1909. 



serious pest in some sections. It is not believed that it is likely 

 to do much damage in Maine, except in low,, wet soils or during 

 abnormally wet seasons. The similar appearing trouble caused 

 by Bacillus solanisaprus Harrison is widely distributed in Can- 

 ada and is there claimed to be of considerable economic import- 

 ance as a cause of tuber decay, pp. 318-322. 



The propogation and spread of the disease probably can be 

 controlled largely by the selection of seed from fields free from 

 the disease, the rejection of all seed tubers which have wounds, 

 cracks or decayed areas and treating the remainder with corro- 

 sive sublimate or formaldehyde solutions, or with formaldehyde 

 gas as is done for potato scab. It is not known whether or not 

 the disease germs will remain alive in the soil to infect future 

 crops of potatoes, but as a precautionary measure the land on 

 which the disease occurs should be kept in grass, clover, or 

 cereals for as long a time as possible before planting it to 

 potatoes again, pp. 322-326. 



