52 THE MONTHLY BULLETIN. 



Potato Scab. 



The potato scab fungus causes a scabby appearance on the surface of 

 the potatoes, consequently lowering their commercial value. On soil 

 badly infested Avith the scab fungus it is advisable to plant to other 

 crops for several years. Always use clean seed and treat the seed 

 before planting, by immersing about one and one half hours in a 

 solution consisting of 1 pound of formalin to 30 gallons of water. 



