8 3 o 



Journal of Agricultural Research 



Vol. VI, No. 21 



Table IV. — Condition of the disinfected, bruised potato tubers at the end of the storage 



period 



It is evident from the results obtained by disinfecting potato stock 

 prior to storage that it is possible to check the disease effectively, pro- 

 vided the disinfecting is done within 24 hours after digging. The 

 solution of mercuric chlorid, which was the most effective, was fairly 

 efficient 48 hours after digging. The formaldehyde solution gave the 

 next best results and was thoroughly effective 24 hours after digging. 

 It was of little or no value when applied from 48 to 96 hours after digging. 

 There was little difference to be observed between the lots dusted with 

 lime and those dusted with sulphur. Wherever the tuber bruises were of 

 such a character that the lime or sulphur could reach and cover the bruised 



