(1) 



following summer. 



3. Select seed for planting, if possible, from fields or locali- 

 ties exempt from the disease the previous season. 



4. Rotate the potato crop, as the winter spores germinate 

 the following spring and finding no food-plants must perish. 



5. Burn all decayed potatoes taken from the cellar or bins 

 and other potato refuse— do not throw them on the compost 

 heap as the spores retain their vitality and are spread far and 

 wide with the manure. 



6. The winter spores do not germinate very early in the 

 spring. Tne planting of early varieties that mature before the 

 parasite can get a start, has been recommended. 



7. If cut seed is used, the surface should be allowed to 

 dry, for when placed in the ground the winter spores would 

 find ready entrance to the tubers through the freshly cut 

 surface. 



REMARKS. 



If varieties of potatoes can be found less liable to attack they 

 should be selected. We believe that a faithful and universal 

 observance of the preventive methods suggested will go far toward 

 relieving potato growers of this pest. We would like to hear 

 from any into whose hands this bulletin may fall as to whether 

 preventive methods are practiced. 



