208 



GARDEN FOES. 



Spindle Disease. _A fungoid disease ife said to be 

 the cause of potato tubert^ producing weak, spindly shoots 

 in spring, and consequently refusing to produce new 

 tubers. 



Kemedy. — The only remedy is not to plant tubers tliat 

 ])i'oduce spindly, weak growths. 



Wart or Black Scab Disease. — This is a com- 

 pai'ati\tdy new disease, which has rapidly spread through- 



[Photo: H. A. .Smith. 

 rOT.ATO INFECTED WITH BLACK S€AB DISEASE. 



The tuber ha»s its one end distorted by a warty-like growth di 

 action of the fungv.s. 



out the country, inflicting serious damage upon the potato 

 cro]). So serious, indeed, has it become the last year or 

 so tliat the Board of Agriculture and Fisheries have, under 

 the powers conferred upon them by the Destructive Insects 

 and Pests Acts, 1877-1907, scheduled it as a notifiable 

 diseases. Tlie disease (Syncliitrinum endobioticum) 

 attacks the tubers in the first instance by means of spores. 

 These give birth to mycelium, which vegetate in the eyes 

 of the tubers, and eventually produce black, s])ongy, 



