i8o 



POTATO 



Seed Treatment 



Disease Treatment 



Scab Soak uncut seed in formalin, i 



pound to 30 gallons of water, for 

 two hours; then dry and plant on 

 scab-free soil. 



Rosette (Rhizoctonia) . As for scab. 



Dry Rot Diseased tubers to be destroyed, 



those in contact with them to be 

 treated as for scab and sprayed 

 as for blight. 



Wet Rot (due to Blight 



or Bacteria) .... Have seed potatoes in such storage 

 that they can be examined, and 

 these tubers sorted out and de- 

 stroyed. Do not plant affected 

 tubers. Soaking them in forma- 

 lin, as for scab, is advisable in 

 some cases, depending on the 

 cause. 



Stem Rot or Dry End 

 Rot (Fusarium oxyspo- 



runi) It attacks the stem-end first; hence, 



cutting off this end of suspected 

 tubers will reveal the disease. 

 Discard diseased tubers. 



