THE POTATO fSCAB 



169 



Professor II. L. Bolley has shown that what is i:>robablv 

 this same disease occurs also on beets planted on j)otato 

 ground. 



Treatment. — Dr. Eoland Thaxter, after several 

 years of careful study, summarizes the preventive meas- 

 ures to be taken against this disease as follows : (1 ) The 



FIG. 74. POTATO INJURED BY SCAB. 



seed must be free from any scabs. (2) Land which has 

 produced scabbed crops in previous years, either of pota- 

 toes or of beets, or lias been fertilized with manure from 

 scab-fed stock, must not be planted to potatoes. (3) 

 Scab rctatocs should never be fed to stock, under any 



